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I left my solar lights outside during a storm last year. Not a light rain. A heavy storm. Wind. Thunder. Water pouring for hours.
I forgot about them completely. Woke up the next morning. Remembered the lights. Rushed outside to check.
They were fine. Every single one still worked.
But not all solar lights survive rain. I learned this after buying cheap ones first. Those died after one storm. The better ones still work today.
The IP rating tells you everything
IP stands for ingress protection. Fancy words for how well something keeps out dust and water.
Two numbers. First is dust. Second is water.
IP44. Handles splashing water. Light rain only. Good for a covered porch.
IP54. Dust protected. Rain safe from any angle. Fine for open gardens.
IP65. Heavy rain. Direct hose spray. The best. Fully outdoor ready.
I have all three types. The IP44 lights sit under my porch roof. Never see direct rain. The IP54 lights are in my garden. They see normal rain. The IP65 lights are on my fence. No cover. They get everything.
After two years, the IP44 lights still work because they are protected. The IP54 lights work but the battery seals look worn. The IP65 lights look new.
What happens when water gets inside
The battery compartment is the weak spot.
Water seeps past the rubber seal. Drops sit inside. The metal battery terminals rust. Rust blocks the connection. The light stops working.
If water sits long enough, it reaches the circuit board. The board short circuits. The light dies completely. No fix.
I saw this with my first solar light. Cheap model. No IP rating on the box. Left it in my garden. One rainstorm killed it. I opened the battery compartment. Water poured out. Rust everywhere.
That light lasted three weeks.
How to check your solar light IP rating
Look on the box. It says IP44 or IP54 or IP65. If you do not see it, assume no protection.
Look on the light itself. Sometimes the rating is molded into the plastic. Near the battery compartment or on the back.
If you see no IP rating anywhere, do not leave that light in the rain. It will die.
What I did to protect my lights after the first one died
After my cheap light died, I changed my approach.
I moved all non rated lights under cover. Porch roof. Patio umbrella. Under the eaves. Anywhere rain does not hit directly.
I bought new lights with IP54 or IP65 for open areas. Spent a few extra dollars. Worth every penny.
I also started doing small things. Put a tiny amount of petroleum jelly on the rubber seal. The jelly repels water. Costs nothing. Takes two minutes.
I tilted my wall lights slightly downward. Water runs off instead of pooling on top. The solar panel still faces the sun. The body tilts down.
After these changes, I stopped losing lights to rain.
Can you fix a solar light that got wet inside
Sometimes yes. Sometimes no.
If you catch it early, open the battery compartment. Take out the battery. Dry everything with a paper towel. Leave the compartment open for 24 hours. Put the battery back in. Test the light.
I saved one light this way. Found it in a puddle after a storm. Opened it. Water inside. Dried everything. Left it open for a day. Put it back together. It worked.
If the light was sitting in water for days, probably dead. If you see rust on the circuit board, dead. If the battery is swollen, dead. Throw it away.
What about snow and freezing rain
Snow is different.
Solar lights still work in snow. But snow covers the panel. The panel cannot charge. The battery drains. The light dies until the snow melts.
Freezing rain is worse. Water gets into small cracks. Then it freezes. Ice expands. Cracks get bigger. More water gets in next time. Eventually the light breaks.
I bring my solar lights inside during winter. Not all of them. Just the ones I care about. The cheap ones stay outside. If they die, I buy new ones in spring.
My neighbor leaves all his lights outside year round. He loses two or three every winter. He says it is worth it. He does not want to store them. His choice.
How to test if your solar lights are rain damaged
Wait for a dry day. Take the light inside. Open the battery compartment. Look for water droplets. Look for white or green powder on the metal. That is corrosion. Look for rust on the springs and contacts.
If you see any of these, your light has water damage.
Put a new battery in. Test the light by covering the solar panel. If it turns on, you got lucky. If not, the circuit board is damaged. Replace the light.
Do expensive solar lights handle rain better
Yes. But not because of the price.
Expensive lights use better rubber seals. Thicker plastic. Better design. Water has fewer places to sneak in.
A $50 solar light with IP65 will outlast three $15 lights with no rating. I proved this to myself. Bought one expensive light and three cheap ones. The expensive light still works. The cheap ones all died within one year.
But you do not need to spend $50. A $20 light with IP54 will handle normal rain. A $12 light with no rating will not. Look for the rating, not the price.
The one type of solar light that never gets rain damage
Solar string lights with sealed LED bulbs. The bulbs are glued shut. No opening for water. The solar panel box has a gasket. The battery compartment has a screw down lid with a rubber ring.
I have two sets of string lights outside for three years. No cover. No protection. They have seen dozens of storms. Both still work.
If you worry about rain, buy string lights. They are the most waterproof.
What I tell my friends when they ask about solar lights and rain
Buy IP65 if the light has no cover. No roof. No tree. No umbrella. Just open sky.
Buy IP54 if the light sits under a tree or on a covered porch.
Buy nothing without a rating. Ever.
Check your lights after the first big storm. Open the battery compartment. Look for water. If you see any, add petroleum jelly to the seal. Tilt the light downward.
Bring your lights inside for winter if you live where it freezes. Store them in a box in your garage or basement.
Do these things and your solar lights will survive rain for years. Skip them and you will be buying new lights every spring.
I learned this the hard way. You do not have to.
FAQs
Can solar lights stay outside in the rain?
Yes if they have an IP44, IP54, or IP65 rating. IP44 handles light rain. IP54 handles normal rain. IP65 handles heavy rain. Lights with no rating will get damaged.
What happens if solar lights get wet inside?
The battery terminals rust. The circuit board short circuits. The light stops working. Dry it immediately to possibly save it.
How do I know if my solar lights are waterproof?
Look for the IP rating on the box or the light itself. IP44, IP54, or IP65 means water resistant. No rating means not waterproof.
Can I fix a solar light that got rain damaged?
Open the compartment. Dry everything. Leave it open for 24 hours. Put in a new battery. Test it. If it does not work, the circuit board is dead. Replace the light.
Do solar string lights handle rain better than path lights?
Yes. String lights have sealed LED bulbs. No openings for water. The solar panel box has better seals. String lights survive rain better than most other types.
Should I bring solar lights inside during winter storms?
Yes if you want them to last. Freezing rain and snow cause cracks. Water gets in. Ice expands. Lights break. Store them inside during winter.
How can I protect my solar lights from rain?
Check the IP rating before buying. Put petroleum jelly on the rubber seal. Tilt the light so water runs off. Bring them inside during heavy storms or winter.
What IP rating is best for solar lights in rain?
IP65 is best. It handles heavy rain and direct hose spray. IP54 is fine for normal rain. IP44 is okay for light rain only.
Can I leave my solar lights out all year?
Yes if they have IP65 rating. IP54 lights will survive most weather but may fail after a few years. IP44 and unrated lights will die in heavy rain or winter.
How do I dry out a wet solar light?
Open the battery compartment. Remove the battery. Wipe everything with a dry cloth. Leave the compartment open for 24 hours. Put a new battery in. Test the light.
Summary
Solar lights get damaged in the rain only if they lack a good IP rating. IP44 handles light rain. IP54 handles normal rain. IP65 handles heavy rain and hose spray. Lights with no rating will fail in one storm. Water damages the battery terminals and circuit board. To protect your lights, check the IP rating before buying. Add petroleum jelly to rubber seals. Tilt lights downward. Bring them inside during winter. Dry wet lights immediately to possibly save them. IP65 rated lights survive year round outdoor use.
