9 Best Waterproof Grow Lights (November 2026)
The best waterproof grow lights include the RWNTAO LED Grow Light Strips for moisture-aware plant shelves, the VIVOSUN LumaLight 100W LED Grow Light for humid indoor grow spaces, and the Barrina T5 Grow Lights for Indoor Plants for linked shelf rows.
On this page (5 sections)
The best waterproof grow lights for most humid setups are the VIVOSUN LumaLight 100W and Relassy 150W. The LumaLight gives you IP65 protection with adjustable full-spectrum output, while Relassy adds IP67 water and dust resistance for more exposed placements.
Those two picks suit different daily routines. The LumaLight hangs over a defined indoor area and lets you lower output for seedlings.
Relassy uses a bracket that can be angled, which helps when plants sit against a wall or under a bench.
For greenhouse strings, the Owleye 12FT Outdoor Grow Lights offer IP65 protection in a compact 3-bulb layout. The VIVOSUN Outdoor LED Grow Lights cover a longer 22 ft run, but their IP44 rating needs more care around sockets and connections.
The right string depends on the shape of your growing area. A short string works along one raised bed or a single greenhouse bench.
A longer string suits rows where plants are spaced out and need light along the whole run.
Waterproof does not mean every part of an installation can sit in water. Match the light's protection rating to the moisture level, protect plugs and unused sockets, and keep ventilation around the fixture.
Care matters in humid spaces because condensation and spray can reach places you may not expect. Keep connectors raised off wet surfaces where possible.
Wipe fixtures dry after watering and check that hanging hardware stays secure over time.
Dry shelves need a different approach from a wet greenhouse. Compact strips can sit close to plants on several levels, but they should stay away from misting and direct spray.
That separation keeps a non-waterproof pick practical for its intended place.
If your main goal is greenhouse coverage, compare these picks with our guide to Best Grow Lights For Greenhouses. For a more focused greenhouse list, see the best waterproof grow lights for greenhouse.
Our picks at a glance
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1
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2
Best for humid indoor grow spacesVIVOSUN LumaLight 100W LED Grow Light
9.4/10 our score
See it on Amazon -
3
Best for linked shelf rowsBarrina T5 Grow Lights for Indoor Plants
9.2/10 our score
See it on Amazon
- 4
Check itOwleye 12FT Outdoor Grow Lights LED String
Best for small outdoor growing areas - 5
Check itRelassy 150W Waterproof Plant Light
Best for exposed full-spectrum coverage - 6
Check itVIPARSPECTRA 70 Watt Grow Light
Best for dimmable seedling coverage - 7
Check itSDOVUERC Full Spectrum Panel Grow Lights
Best for modular indoor shelves - 8
Check itCANAGROW Full Spectrum LED Grow Lights
Best for sealed compact lighting - 9
Check itVIVOSUN Outdoor LED Grow Lights
Best for long greenhouse strings
The best waterproof grow lights for humid and splash-prone spaces
The VIVOSUN LumaLight is the strongest overall choice for a humid indoor grow area, while Relassy and Owleye fit more exposed locations. The remaining picks help when you need shelf coverage, linked panels or a lower-power dry setup.
RWNTAO LED Grow Light Strips: Best for moisture-aware plant shelves
- 3-head x 2-pack design
- 8.6 in light strips
- 3, 9 and 12-hour timer
- 10 dimmable levels
- Aluminum construction
Compact strips give shelf growers flexible placement and timed lighting. They are best for covered or dry setups where splash protection is not required.
Pros
- Multiple mounting options
- Cycle memory timer
- 10 brightness levels
Cons
- Not described as waterproof
- Short 8.6 in strips
The RWNTAO LED Grow Light Strips are best for a plant shelf where you need compact placement and automatic timing. Each light bar is 8.6 in long, and the 3-head x 2-pack format lets you spread light across more than one shelf section.
The full spectrum covers 380–800nm, with 3000K light and a warm, natural-sunlike color. You can choose from 10 dimmable levels as plants move from seedlings to more established growth.
Its cycle memory timer runs for 3, 9 or 12 hours and repeats the schedule each day. The three lighting modes let you use light A, light B or both together.
Mounting is flexible because the kit includes screws, ties, double-sided tape and magnets. The aluminum construction and 71 in power cord suit a shelf, office or covered growing area, but the light is not described as waterproof.
Choose this pick when timing and shelf fit matter more than splash protection. For a small greenhouse with limited room, compare our guide to Best Grow Lights for Small Greenhouses.
VIVOSUN LumaLight 100W LED Grow Light: Best for humid indoor grow spaces
- 100W LED output
- Full spectrum with 3000K, 5000K, 660nm and 730nm LEDs
- IP65 waterproof and dustproof rating
- 4-level dimming
- 11.8 x 11.8 x 2.2 in
This hanging panel fits growers who need strong, adjustable light in a high-humidity room. Its IP65 rating adds protection during spray-heavy care.
Pros
- IP65 protection
- Four spectrum groups
- 25% to 100% dimming
Cons
- Indoor use
- GrowHub sold separately
The VIVOSUN LumaLight 100W is the best overall fit for humid indoor growing because it combines full-spectrum coverage with an IP65 waterproof and dustproof rating. Its 11.8 x 11.8 x 2.2 in body hangs above a defined growing area.
The spectrum includes white, blue, red and far-red LEDs at 3000K, 5000K, 660nm and 730nm. That mix is designed for use from seedling through harvest, so it can stay in one growing setup as plants mature.
A 4-level dimming knob adjusts output from 25% to 100%. The aluminum base and thermal management help handle heat, while the 3.2 lb fixture stays suited to a hanging installation.
VIVOSUN also lists compatibility with the GrowHub and mobile app, with the GrowHub sold separately. That option may appeal to growers who want scheduled control, but the light remains useful without adding smart controls.
Pick it for humid indoor rooms, grow spaces and areas where spray from watering is possible. Keep the plug and cable connections protected even though the light itself has an IP65 rating.
Barrina T5 Grow Lights for Indoor Plants: Best for linked shelf rows
- Four 1 ft fixtures
- 5000K full-spectrum white light
- 20W total
- Up to 16 lights linkable
- Separate switches
These short fixtures work well under shelves or across several plant levels. They suit dry indoor spaces where easy linking matters more than water resistance.
Pros
- Four compact fixtures
- Linkable up to 16 lights
- Separate controls
Cons
- Not described as waterproof
- Indoor shelf use
Barrina's T5 lights suit a dry plant shelf with several short rows. The pack has 4 fixtures that are each 1 ft long, with 5000K full-spectrum white light and 96 LEDs across the set.
The 20W total draw comes from four 5W fixtures. Each fixture has its own switch, so you can control individual shelf sections instead of lighting the entire display every time.
Installation uses clips, cable ties, magnetic bars and double-sided tape. You can link up to 16 lights in a series, which helps when a plant rack grows beyond one shelf.
This model is not described as waterproof, so it belongs in a dry indoor setup rather than beside an open sink, misting area or greenhouse spray line. Its black casing and dark cords may also blend more easily into a dark plant display.
Choose Barrina for linked shelf rows and separate controls. If your growing area is humid, the VIVOSUN LumaLight offers a stated IP65 rating and a stronger moisture-focused design.
Owleye 12FT Outdoor Grow Lights LED String: Best for small outdoor growing areas
- 12 ft string
- IP65 dustproof and waterproof rating
- 3 bulbs
- 31W total
- 33.89 umol/s PPF
The Owleye string spreads supplemental light along a greenhouse, raised bed or outdoor growing area. Its pink light and 31W total output suit focused coverage rather than a broad indoor panel.
Pros
- Outdoor placement
- IP65 protection
- Up to 10 sets linkable
Cons
- Pink light
- 31W total output
The Owleye 12FT Outdoor Grow Lights are a strong choice for a small greenhouse, raised bed or outdoor growing area that needs a string format. The set has 3 bulbs across a 12 ft string and uses 31W total.
Its IP65 dustproof and waterproof rating supports outdoor placement, while the pink light combines red, blue and some green spectrum. The light output is listed at 3,000 lumens, with a PPF of 33.89 umol/s.
The string can link up to 10 sets, creating up to 30 heads for a larger growing space. That makes it more flexible than a single compact panel, although additional sets also increase the total installation length and power needs.
Owleye describes the light as hanging and suitable for greenhouse or outdoor use. The plastic construction and 1.7 lb weight make it easier to plan along a run than a heavier panel.
Choose it for focused string coverage and outdoor moisture protection. The pink color may be less suitable if you want neutral-looking light around a living space.
Relassy 150W Waterproof Plant Light: Best for exposed full-spectrum coverage
- 150W LED
- 380–830nm full spectrum
- IP67 water and dust resistance
- 180° bracket
- 67 in cable
Relassy is a strong fit where water exposure is a central concern. Its IP67 protection, 150W output and flexible bracket support greenhouse or outdoor plant lighting.
Pros
- Highest water-resistance rating here
- 150W output
- Three mounting options
Cons
- Larger than strip lights
- Indoor use is the stated usage category
Relassy is the best choice when water resistance is the main buying factor. Its IP67 water and dust resistance gives it the strongest stated protection rating in this group, and the 150W LED output suits plants that need more concentrated supplemental light.
The full spectrum covers 380–830nm, including blue ranges for germination and red ranges for fruiting plants. A 180° bracket gives you more control over the light direction than a fixed strip.
The fixture uses aviation aluminum with vents and a fanless design. Its 67 in cable includes a switch, and the light supports wall mounting, ceiling mounting or use with the bracket.
Relassy describes this light for indoor and outdoor plants, including rainy or snowy conditions. Even so, the rating applies to the light's stated protection, not automatically to every plug, cable connection or extension setup.
Pick it for exposed greenhouse areas and outdoor plants where IP67 protection is more useful than a low-profile shelf design. Its 150W format is more light than a small seedling shelf may need.
VIPARSPECTRA 70 Watt Grow Light: Best for dimmable seedling coverage
- 70W LED
- 11,000 lumens
- 4-level dimmer
- 660nm, 3000K and 5000K spectrum
- 2 x 2 ft vegetative area
This fanless panel gives seedling and vegetative plants adjustable light in a compact hanging format. Use it in a dry location because waterproof protection is not stated.
Pros
- Four dimming levels
- Aluminum heat sinks
- Compact 12.99 x 7.87 in body
Cons
- Not described as waterproof
- Dry-location planning required
The VIPARSPECTRA 70 Watt Grow Light fits seedlings and vegetative plants in a dry 2 x 2 ft area. It uses 70W and provides up to 11,000 lumens through a balanced 660nm red, 3000K and 5000K white spectrum.
A 4-level dimmer helps you lower the intensity for young plants or increase it as the canopy develops. The aluminum heat sinks use a fanless design, which avoids fan noise in a home growing space.
The fixture measures 12.99 x 7.87 x 1.34 in and hangs from the included stainless steel hooks. It is a practical panel when you need a defined area rather than a long string or several shelf bars.
Waterproof protection is not stated for this model. Place it away from spray and dripping water, and choose a rated fixture instead if your plants are in a wet greenhouse or outdoor area.
Pick VIPARSPECTRA for dimmable indoor seedling coverage. For a similar panel format with stated moisture protection, the VIVOSUN LumaLight is the safer match.
SDOVUERC Full Spectrum Panel Grow Lights: Best for modular indoor shelves
- Four 11.8 x 3.7 in panels
- 36W total
- 3000K, 5000K and 660nm spectrum
- Five timer settings
- Up to 10 panels linkable
The four-panel layout lets you spread light across shelves instead of concentrating it in one spot. It is a dry indoor choice with timer memory and flexible mounting.
Pros
- Five timer settings
- Panels can link in series or parallel
- Zip ties and tape included
Cons
- Not dimmable
- Not described as waterproof
The SDOVUERC panel set is best for indoor shelves that need broad, modular coverage. It includes 4 panels measuring about 11.8 x 3.7 in, with 36W total output and 768 LEDs across the set.
The full spectrum combines 3000K warm white, 5000K cool white and 660nm deep red. You can set the memory timer to 4, 8, 12, 16 or 20 hours, which gives more schedule choices than a basic on-off switch.
The panels can link in series or parallel, and up to 10 panels can be connected. Zip ties and 3M adhesive tape support mounting under cabinets, on shelves or along a wall.
SDOVUERC describes the panels as vented for heat dissipation, but they are not described as waterproof. Keep them in a dry indoor growing area and use a rated light for splash-prone conditions.
Choose this set when one shelf needs several evenly placed panels. Its timer is useful for routine care, but it is not dimmable.
CANAGROW Full Spectrum LED Grow Lights: Best for sealed compact lighting
- 380–800nm full spectrum
- Waterproof and dustproof lens
- 45–55W consumption
- 5,000 lumens
- Fanless cooling
This compact COB light suits growers who want a sealed lens and focused full-spectrum coverage. Its wall-mount format works better for one area than a long shelf.
Pros
- Waterproof and dustproof lens
- Fanless operation
- 380–800nm spectrum
Cons
- One light source
- 120V use only
The CANAGROW COB light suits a focused growing area where a sealed lens matters. Its lens is described as waterproof and dustproof, and the light uses a 380–800nm full spectrum for vegetative and flowering stages.
The light consumes 45–55W and produces up to 5,000 lumens. Its COB design combines red, blue, infrared and ultraviolet portions in the stated spectrum, while the wall-mount format keeps the unit aimed at one location.
CANAGROW describes intelligent cooling with a heat-dissipation coating and fanless operation. The light is listed for 120V use only, so check that your power setup matches before installation.
This is a focused single-light option rather than a shelf system or long string. It works best when one plant group needs a compact fixture with a sealed lens.
Choose CANAGROW for a small, targeted area where waterproof and dustproof protection is useful. The Relassy offers higher stated wattage and an IP67 rating when you need broader output and stronger documented protection.
VIVOSUN Outdoor LED Grow Lights: Best for long greenhouse strings
- 22 ft adjustable cord
- 6-light string
- IP44 rating
- 90W total
- 3000K, 5000K and 660nm LEDs
This six-light string covers a longer greenhouse, garden or backyard run. Its IP44 rating calls for careful socket protection and secure installation around water.
Pros
- 22 ft reach
- Six bulbs
- Up to 36 lights on 110V
Cons
- Lower protection than IP65 and IP67 picks
- Unused sockets need protection
The VIVOSUN Outdoor LED Grow Lights cover a longer growing run than the other string option here. The set includes 6 bulbs across a 22 ft adjustable cord, with 90W total power and 19500 lumens.
Each bulb uses 48 LED chips made up of 3000K warm light, 5000K white light and 660nm red light. Together, the set provides a full spectrum from 380–780nm with blue and deep-red portions.
The IP44 rating supports outdoor and indoor use, but VIVOSUN says unused sockets should be protected and each light should be firmly secured to the socket. That makes installation care especially important around rain, irrigation and greenhouse humidity.
The daisy-chain design can support up to 36 lights under 110V or up to 72 lights under 220V, within the stated connection layouts. More bulbs can cover a larger area, but they also require careful planning for power and spacing.
Choose this set for long greenhouse rows, backyard beds or farm-style supplemental lighting. Pick Owleye instead when you want the stronger IP65 rating in a shorter 12 ft string.
How to choose waterproof grow lights by IP rating
The IP rating is the first filter for a wet growing area, but it isn't the only one. A rating describes protection against dust and water for the rated equipment, so you still need to plan the plug, socket, cable path and mounting location.
IP44 is the lowest stated rating in this roundup. The VIVOSUN Outdoor LED Grow Lights can work in a carefully protected outdoor setup, but their unused sockets need protection.
IP65 appears on the VIVOSUN LumaLight and Owleye string. These are better matches for humid rooms, greenhouse use and areas where light spray may occur.
IP67 appears on the Relassy. That makes it the strongest choice here when water and dust resistance are the main concerns, although you should still keep electrical connections out of standing water.
The CANAGROW light uses a waterproof and dustproof lens, but the product data does not give an IP number. Treat that as a useful sealed-lens feature rather than assuming it matches IP65 or IP67 protection.
How much light do your plants need?
The right light depends on the plant, growth stage, mounting distance and coverage area. A 150W panel can make more sense for a larger or more demanding area, while strips and short strings help distribute light across shelves or narrow runs.
Start by thinking about how the light will reach the leaves. A panel hung over one bench gives a central pool of light.
Strips placed under several shelves spread light more evenly across plants that sit at different heights.
Seedlings usually need a gentler setting than plants that are taller or in full growth. Dimming lets you start lower and raise output as the canopy develops.
That also makes it easier to watch how plants respond before changing the distance.
Use dimming when available. The VIVOSUN LumaLight offers four levels from 25% to 100%, VIPARSPECTRA has a 4-level dimmer, and RWNTAO provides 10 brightness levels.
Those controls suit different setups. Fine brightness steps help on a shelf where lights sit close to leaves.
A four level dimmer suits a hanging panel where you may move it higher or lower instead.
For plants under a string light, check the distance between bulbs and the canopy. A long cord helps placement, but it does not guarantee even light across every plant.
Walk the row and look for gaps between bulbs. Plants directly under a bulb may get more light than plants halfway between them.
Adjust spacing, height or the number of bulbs so the whole row receives a steadier level.
Distance changes the feel of the light in daily care. Move a fixture too close and leaves can fade or wilt.
Move it too far away and plants may stretch for light. Small changes, followed by checking leaf color and growth, work better than one large change.
Give plants a dark period instead of running lights continuously. Timers on RWNTAO, SDOVUERC and the Owleye schedule can reduce daily manual adjustment, while Barrina's separate switches give you basic section-by-section control.
A timer also helps when you are away from home for a few days. The plants keep a regular rhythm, and you do not need to remember to switch lights on each morning.
Manual switches still work, but they ask for more attention.
Not every plant wants the same hours of light. Match the schedule to the type of plant and its stage of growth.
Leafy plants, seedlings and flowering plants may each need a different balance of duration and brightness.
Coverage shape matters as much as total power. A strong panel over a small bench can be more useful than a long string over a narrow shelf.
Think about the footprint first, then choose the format that fits it.
Waterproof grow lights for greenhouse and winter use
Greenhouse growers usually need both moisture protection and enough coverage for the full plant area. A single sealed panel can work for one bench, while strings make more sense when plants are spread along a row.
Humidity changes how a greenhouse feels from day to day. Morning condensation, afternoon heat and watering can all add moisture around fixtures.
A rating that suits a dry room may not suit that cycle.
The Relassy and Owleye are the strongest matches for wet greenhouse conditions because their stated protection ratings are IP67 and IP65. The VIVOSUN LumaLight is a better indoor panel choice when you need hanging installation and dimming.
Placement decides whether that protection is enough. Keep plugs, timers and connection points in the driest part of the setup.
Route cords so water from watering does not run along them toward a socket.
For winter gardening, light duration and placement matter because natural daylight changes. Our guide to Best Grow Lights For Winter Gardening covers seasonal supplemental lighting choices.
Shorter days can make supplemental light more noticeable against the rest of the space. A timer helps keep a steady schedule when daylight shifts week by week.
Raising or lowering a fixture can also help as plants grow taller.
Position matters more in winter because low sun may already fall across part of a bench. Supplemental light should reach the plants that get the least natural light.
Avoid stacking fixtures so close that leaves sit in shadow behind taller pots.
Keep glass, plastic and greenhouse frames from blocking the fixture's intended coverage. Secure hanging lights so they don't swing into leaves, and leave enough room for watering without directing spray toward plugs or controls.
Check mounting after heavy rain or strong wind in an exposed area. A light that has shifted may shine on a wall instead of the plants.
Tightening clips or brackets takes little time and keeps coverage where you planned it.
Think about cleaning as part of care in a greenhouse. Dust and moisture can build up on a fixture over time.
A dry cloth and a quick visual check during watering help you spot loose cords or damaged seals early.
Final verdict: which waterproof grow light should you choose?
The VIVOSUN LumaLight 100W is the best all-around pick for a humid indoor grow space because it combines IP65 protection, full-spectrum LEDs and adjustable output. Choose the Relassy 150W when IP67 protection and higher output matter most.
Those two cover most wet setups, but the format still matters. A hanging panel suits a bench or tent where plants sit in one area.
A bracket mounted light suits a wall or exposed corner where angled coverage helps.
Choose Owleye for a shorter IP65 string, or VIVOSUN Outdoor LED Grow Lights for a 22 ft run where you can protect the IP44 sockets. Pick CANAGROW for a compact waterproof lens and focused wall-mounted coverage.
Owleye fits a raised bed or a small greenhouse row where a string can follow the plants. The longer VIVOSUN string fits rows that need bulbs spread over more distance.
Both need planned socket protection during installation.
CANAGROW suits one focused area rather than a whole shelf system. Its sealed lens and wall mount keep the shape simple.
That can be a clean choice when a single plant group needs light and space is tight.
For dry shelves, RWNTAO, Barrina and SDOVUERC are easier to fit than outdoor-rated fixtures. Their compact shapes sit under shelves or across several levels without taking the room a panel needs.
Separate controls and timers make those shelf picks easier to live with. You can light one section while another rests, or let a timer handle the daily routine.
Keep them away from spray and choose a rated fixture for wet areas.
The best waterproof grow lights are the ones whose protection rating, coverage shape and mounting method match the actual moisture and plant layout in your space. Measure the area, note where water lands, then pick the format that fits both.
Our top 3 picks at a glance
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1
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2
Best for humid indoor grow spaces
VIVOSUN LumaLight 100W LED Grow Light
9.4/10 our score
See it on Amazon -
3
Best for linked shelf rows
Barrina T5 Grow Lights for Indoor Plants
9.2/10 our score
See it on Amazon
Frequently asked questions
What are the best waterproof grow lights?
The best waterproof grow lights depend on the space. Choose the Relassy 150W for IP67 protection and broad full-spectrum output, the VIVOSUN LumaLight for an IP65 hanging panel, or the Owleye string for a smaller outdoor or greenhouse run.
For a long 22 ft string, VIVOSUN's Outdoor LED Grow Lights offer more reach but use an IP44 rating.
Can grow lights get wet?
Only lights with a stated water-resistance rating should be considered for wet or splash-prone areas. IP65, IP67 and similar ratings describe protection against specific dust and water exposure, but they don't make every cord, plug or connection safe to submerge.
Keep connections protected and follow the installation instructions.
Are waterproof grow lights safe in a greenhouse?
Water-resistant grow lights can suit a greenhouse when their rating matches the moisture and spray exposure in that space. The Relassy, Owleye and VIVOSUN LumaLight have stated water-resistance ratings, while the CANAGROW lens is described as waterproof and dustproof.
Keep electrical connections dry and secure.
What IP rating should a grow light have?
A higher IP rating generally gives more protection against dust and water, but the rating must match the installation. IP44 may suit a carefully protected string, while IP65 or IP67 offers a stronger choice for humid or splash-prone areas.
Check the full light, plug and connection requirements before installation.
How far should waterproof grow lights be from plants?
The right distance depends on the light's output, plant type and growth stage. Start with the manufacturer's guidance when available, then watch for signs of too much or too little light such as leaf fading, stretching or wilting.
Use dimming where available and give plants a dark period.
