Tags:
Educational
Published: September 15, 2026
Key Takeaways
Key Takeaways
- Yes, you can get sunburned underwater. UV rays travel several feet below the surface so while going for a dip might feel like relief from the sun, you’re still at risk of sunburn.
- Water can actually speed burns up, thanks to surface reflection, and magnifying droplets on your skin.
- A broad-spectrum, water-resistant SPF plus a rashguard and shade breaks are your best bets for staying protected in and out of the water.
If you've ever wondered, can you get sunburned under water, the answer is also yes because UV rays continue traveling below the surface. Your dip might feel like a refreshing break from the sun, but UV rays don’t stop at the surface. They travel right into the water with you, which means your skin could still get burned when surfing, swimming, or splashing around. Read on for why swimming can actually increase your burn risk, and how to stay protected while still making the most of your beach days. Because one thing about us, we’re staying in the water.
Can You Get Sunburnt Underwater?
Yep, unfortunately there’s no SPF in H2O. Many swimmers also ask, "can you get sunburn underwater?" The answer is yes. UV passes straight through the surface and keeps going, reaching a few feet deep depending on how clear the water is. Even a foot or two under, your skin can still soak up around 40% of the sunburn-causing UV it would catch at the surface.
Factors That Contribute To Faster Sunburns in the Water
Not only does the water not protect you from UV rays, it can speed up your sunburn. A handful of factors add up to intensify the sun’s effect whenever you’re in or near the water:
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Surface reflection: Sunlight bounces off the top of the water and hits you from every angle. Between the rays coming down and the ones ricocheting back up, you’re basically getting a double dose of UV.
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Magnified droplets: Those beads of water clinging to your skin act like a bunch of tiny magnifying glasses (kind of like us 90s kids who used magnifying glasses on ants), focusing the sun’s rays and concentrating their impact.
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The cooling effect: Water masks the heat of the sun, and this false sense of relief is exactly what keeps people out longer, and less protected, than they should be.
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Sunscreen wash-off: Swimming, sweating, and toweling off all wear your sunscreen down over time. Reapply, reapply, and reapply.
Tips To Protect Yourself in the Water
The good news: staying safe in the water isn’t complicated. Preparation and a few good habits keep you covered so you can focus on whatever type of fun you’re having under the sun. Here’s how to protect your skin if you spend most of your beach day in the water (which, same)
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Slather on a broad-spectrum, water-resistant sunscreen (SPF 30 or higher) about 15 minutes before you get in.
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Reapply every two hours, and always right after you get out, dry off, or have a long surf or swim.
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Throw on a rashguard or wetsuit for built-in coverage that doesn’t wash away. UPF 50+ fabrics block around 98% of the sun’s UV rays.
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Take shade breaks under an umbrella or tent, especially during peak UV hours (10 a.m. to 2 p.m.).
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Don’t forget eas- to-miss spots like your ears, the back of your neck, scalp, and the tops of your feet.
Sunburn Underwater FAQs
Can You Get Sun Tan Under Water?
Yes, you can. UV rays reach below the surface, so your skin can still get tan while you're swimming. But remember, a tan isn't a sign of healthy skin or badge of honor (we’ll make an exception for a leash tan at the end of summer – you earned that), it's your skin reacting to UV damage, darkening to try to protect itself.
Can You Get Sunburnt When Wet?
Yes, in fact wet skin can actually make you burn more easily. For starters, the water droplets sitting on your skin can magnify the sun's rays. Plus, being in the water masks the sun's heat, so you might miss the warning signs that you're getting fried. On top of that, swimming or surfing can wash off certain sunscreens.
Is Sunburn Worse Underwater?
It can be. You’re not necessarily catching more UV underwater than on dry land, but everything around the water works against you: reflection off the surface, magnifying droplets, and a cooling effect that keeps you out longer and less protected than you realize. Add in sunscreen that slips off in the water, and conditions are ripe for a burn that sneaks up on you. So while the water itself isn’t “stronger,” a day spent swimming often leads to a worse burn than a day spent lounging. Protect accordingly and reapply often.
