Reviewed by: Dr. John P. Fezza, M.D
We all loved a good whirlpool as kids (or at least knew the cool kids who could make one). And nothing beats that post-tan dip in the ocean or pool to cool off. It’s only common sense that the nice, soothing, tingly feeling of water-on-skin contact must equal a force field from the sun. Right?
Well, it’s the opposite. And if you’ve ever wondered how to protect your skin from cancer while swimming, the short answer is: you need to work harder than you think.
Swimming puts people at risk for increased UV exposure. The sun’s rays reflect off water surfaces, bounce under hats, and sneak around sunglasses. Add in sweat, saltwater, and sunscreen that washes off way too easily, and you’ve got a perfect storm for skin damage. You’re even more at risk if you have a poor diet.
No surprise then that swimmers, surfers, boaters, and other beach bums face a higher risk of skin cancer, the most common cancer in the U.S.
Why Water Lovers Need to Be Extra Careful
- Reflection = Double Trouble: UV rays reflect off water and sand, intensifying your exposure—even in the shade.
- Sweat + Splash Factor: Water and sweat dampen sunscreen’s performance fast.
- Delayed Awareness: It can take hours or days for sunburn or UV-related skin damage to become visible.
Combine those with frequent, long days outdoors, and you’ve got a clear need for next-level protection.
Types of Skin Cancer to Watch For:
Knowing the risks can help you spot signs early and get skin cancer treatment before it spreads.
- Basal Cell Carcinoma: Usually looks like a pink bump or scaly patch. Grows slowly but can become invasive.
- Squamous Cell Carcinoma: Appears as a crusty or red sore on sun-exposed areas.
- Melanoma: The most aggressive form. It shows up as a changing mole or irregular dark spot.
If caught early on, most skin cancers are highly treatable. That’s why skin cancer diagnosis and skin cancer testing are so important, especially if you spend a lot of time outdoors, or have a member of your family with it. 1 in 10 skin cancer diagnoses are hereditary.
How to Stay Safe While You Swim, Surf, or Sail
1. Use Broad-Spectrum Sunscreen Correctly
- Choose SPF 30 or higher, labeled “broad spectrum.”
- Apply 15 minutes before going outside—even if it’s cloudy.
- Reapply every 2 hours, or immediately after swimming or sweating.
- Don’t forget commonly missed spots: ears, lips, tops of feet, and back of neck.
2. Cover Up (Yes, Even in the Water)
- Look for swim shirts, rash guards, or long sleeves with UPF 50+ fabric.
- Wear wide-brimmed hats and polarized sunglasses with UV protection.
- Use SPF lip balm and water-resistant gear whenever possible.
3. Avoid Peak Sun Hours
- UV rays are strongest from 10 a.m. to 4 p.m.
- Opt for early morning or late afternoon outings.
- Use shade (like canopies or umbrellas) when taking breaks.
4. Know Your Skin and Get Checked
- Learn the ABCDEs of melanoma (Asymmetry, Border, Color, Diameter, Evolving).
- Watch for sores that won’t heal or moles that change.
- Get annual full-body skin checks by a dermatologist, especially if you’re at higher risk. Your risk changes as you age.
- Review your treatment options, like Mohs surgery or non-surgical options.
These tips are some of the most effective ways to prevent skin cancer during water activities, especially if you’re out on the water frequently or for long periods.
Stay Skin Safe, Not Sunburnt, and Sorry
People are catching on: Swimming in clean, natural waters like the ocean can actually be good for your skin. Saltwater has minerals like magnesium and potassium that can calm inflammation, clean out pores, and help gently exfoliate your skin. Even the sand acts like a natural scrub for smoother, healthier skin, as noted by Medical News Today.
The sun is not the enemy. It helps your body make vitamin D, boosts your mood, and can even support immune function. But like anything else, too much of a good thing can backfire…in the form of UV rays.
It takes a little discipline and balance. Start with smart sun habits, regular skin checks, and early skin cancer diagnosis to enjoy everything you love about being outdoors without risking your skin’s health. These are some of the most practical ways to prevent skin cancer during water activities.
If you notice anything new or abnormal on your skin, don’t wait until the problem gets worse. The team at AMARA offers surgical and non-surgical skin cancer treatment in Venice, FL, and we’re here to help you stay healthy, year-round.
Resources
- Skin Cancer Foundation – Outdoor Sun Safety Tips
- American Academy of Dermatology – How to Perform a Skin Self-Exam
- Environmental Working Group (EWG) – Sunscreen Guide
- CDC – Sun Safety While Swimming
- AMARA Aesthetic Surgery & Dermatology
Book Your Skin Check Today
Call Amara or schedule your appointment.
**While we strive to provide accurate and up-to-date information, medical knowledge is constantly evolving, and new research may change the nature of certain conditions. Please remember to consult with a healthcare professional or dermatologist for proper diagnosis, treatment, and guidance regarding skin cancer or any other medical condition.**