Wear a wide-brim hat or cap with neck protection, a UPF 50+ long-sleeve sun shirt, quick-dry pants or leggings, sun gloves, and wraparound UV sunglasses. Clothing is your primary defense on the water, and sunscreen covers the skin that stays exposed. Fit, fabric, and wetness all change how much protection a garment actually gives you once you start paddling.
TL;DR:
- A cap with a neck flap fits beneath a PFD more easily than a stiff brim; shorts leave legs exposed, so apply sunscreen there.
- UPF 50 fabric blocks about 98% of UV without reapplication; sunscreen wears off and needs renewal about every two hours, sooner after swimming or sweating.
- A white cotton shirt offers roughly UPF 7, while quick drying synthetic fabric holds its shape and works better as a paddling layer.
- Wet or overstretched garments let more UV through, so check stretched shoulder panels and pack a dry spare shirt.
- Wear a slightly loose shirt beneath your PFD, since tight material stretches over sunlit skin; flat seams and smooth shoulders reduce rubbing.
Table of Contents
- What should you wear on the water, item by item?
- How does UPF work, and how is it different from SPF?
- How do you choose UPF fabrics for paddling?
- How should UPF clothing fit under a PFD?
- How do you read UPF labels and keep protection over time?
- What mistakes do paddlers keep making with sun protection?
- Which paddling-friendly tees, caps, and accessories do we offer?
- FAQ
- Sources
What should you wear on the water, item by item?
Build your outfit from the head down, because water throws UV back at you from below as well as the sun hitting you from above. Skin Cancer Foundation guidance for paddlers pairs UPF-rated long sleeves, full-length pants, and hats with neck protection with water-resistant sunscreen on whatever skin remains.
Hats. A wide brim shades your face, ears, and neck, but a brim that sticks out too far catches wind and bumps against a PFD collar. Pick a brim that stays comfortable when you turn your head to check your wake. A cap with a neck flap is the lighter alternative, and it sits cleanly under a life jacket. Ventilation panels matter more than you might expect on a long, hot day. For background on why headwear matters outdoors, this hat protection guide is a useful read, and we cover scalp coverage in our post on sun protection for your scalp.
Shirts. Choose a UPF 50+ long-sleeve sun shirt or rashguard. Longer sleeves with thumbholes keep the backs of your hands covered while you paddle, and a higher collar guards the side of your neck.
Pants and shorts. Full-length UPF pants protect your shins and calves on long, sunny days. Quick-dry shorts work when you are paddling short sessions or when heat is the bigger concern, but then your legs need sunscreen.
Hands and feet. Sun gloves help on long paddles, since your hands face the sun with every stroke. For your feet, neoprene socks add insulation and cover your skin, while water shoes drain faster and feel cooler in warm water.
Eyes. Wraparound sunglasses with 100% UVA and UVB protection block glare from the side. Check a retention strap fits your glasses, and do not assume it will keep them afloat.
What to carry:
- A spare dry shirt in a dry bag
- A hat strap or clip
- A small sunscreen tube for your face and hands
- A dry bag for wet layers after you land
Pro Tip: Clip your hat to your PFD with a short strap at launch. Wind gusts take hats fast, and a hat in the water is no protection at all.
How does UPF work, and how is it different from SPF?
UPF tells you how much ultraviolet radiation a fabric lets through to your skin, covering both UVA and UVB. A UPF 50 fabric blocks about 98% of the sun’s rays, and the Skin Cancer Foundation treats UPF 50+ as excellent protection.
SPF and UPF are not interchangeable. UPF and SPF both measure UV protection, but clothing is a static barrier that works the moment you put it on. Sunscreen has to be applied in a thick enough layer and reapplied about every two hours to keep working, and swimming or sweating shortens that window.
Statistic callout: A UPF 50 fabric blocks roughly 98% of UV, which is why the Skin Cancer Foundation recommends it for high protection.
Public health bodies agree on the order of priority. The World Health Organization calls clothing a consistent physical barrier that does not wear off like sunscreen, and advises prioritizing shade and protective clothing whenever UV reaches a moderate level or above.
How this plays out for you on the water:
- Cover as much skin as possible with UPF clothing, since it needs no reapplication.
- Use broad-spectrum, water-resistant sunscreen on your face, ears, and the backs of your hands.
- Reapply sunscreen at midday, even if the label promises water resistance.
- Treat any uncovered strip, like the gap between glove and sleeve, as a sunscreen zone.
How do you choose UPF fabrics for paddling?
Fabric construction decides how much UV gets through. A tightly woven or knit fabric with small pores blocks more than a loose one, and you can test this at home by holding a garment up to a light. If you can see plenty of light through it, UV is getting through too. Thicker fibers, darker colors, and finishing treatments also raise protection, while a white cotton T-shirt offers only moderate protection, roughly UPF 7, and it drops further when wet.
Fiber choice matters for comfort as well as protection. Polyester, nylon, and other synthetics dry quickly and hold their shape. Untreated cotton absorbs water, stays damp, and gets heavy, so avoid it as your main layer on the water.
Wetness is the biggest on-water catch. Peer-reviewed research shows that a garment’s effectiveness drops significantly when it becomes wet or overstretched, because water-filled fibers and stretching let more UV through. We dig into this in our look at why UPF clothing fails paddlers when wet.
Features worth looking for:
- Quick-dry synthetic fabric that wicks moisture
- Vents or mesh panels placed away from the shoulders and back
- Long hems that do not ride up when you lean forward
- Cuffs and thumbholes that hold sleeves in place
- Reinforced seams at stretch points like shoulders and elbows
- A dense knit you cannot easily see through
Color is a trade-off. Darker colors block more UV but absorb more heat, and our guide to wearing a black hat without overheating covers how to manage it. Read UPF claims carefully: a labeled UPF value tied to a recognized test is more reliable than a vague “sun protective” finish with no number.
Pro Tip: Rinse a new shirt, soak it, and pull it across your shoulders. If the fabric turns see-through where it stretches, size up before you buy.
How should UPF clothing fit under a PFD?
Aim for a slightly loose fit. A shirt stretched tight across your shoulders loses UV protection exactly where the sun hits hardest, but a baggy one flaps and snags on your deck lines and spray skirt.
Layer in this order: a sun-protective base layer first, an insulating mid layer if the air or water is cold, and a waterproof shell only when conditions demand it. Keep a dry spare, since a wet shirt is both colder and less protective.
Your PFD changes what works on top. Straps and foam can rub collars and pinch fabric, so choose flat seams and smooth shoulders. A cap or a soft brim sits better under a life jacket collar than a stiff, wide hat.
Protect these coverage zones in this order:
- Neck and ears: use a neck flap, a buff, or a high collar, and add sunscreen to any gap.
- Scalp: wear a hat with a secure strap, and apply sunscreen along your part if your hair is thin.
- Backs of hands: use sun gloves or thumbhole sleeves, because your hands are in front of you all day.
- Shoulders and upper back: keep these covered with a tightly knit shirt that does not strain when you reach forward.
- Calves and ankles: choose full-length pants or sunscreen, and recheck them after getting wet.
How do you read UPF labels and keep protection over time?
Labels come from standardized testing. Practices from ASTM and AATCC, such as ASTM D6544, prepare fabric by simulating laundering and UV exposure to estimate how protection changes over roughly two years of seasonal use. Manufacturers often print a conservative UPF value to represent what you should get over time. The related ASTM D6603 labeling guide covers how UV-protective textiles should be described.
A labeled UPF value tied to a named test is trustworthy. A vague “UPF-treated” claim with no number deserves a closer look at the tag or product page.
To keep protection up:
- Follow the washing instructions on the care tag.
- Skip fabric softeners, which can coat fibers and trap odors.
- Rinse the garment with fresh water after chlorine or salt exposure.
- Hold the fabric to the light now and then, and retire it when it thins.
- Dry it away from high heat so fibers do not break down early.
What mistakes do paddlers keep making with sun protection?
The most common mistake is trusting sunscreen alone. It sweats off, rinses off, and gets missed in awkward spots, while a shirt stays put. The second is buying a tight, stretchy shirt because it looks sleek, then discovering the fabric thins across your shoulders by the end of the day. The third is forgetting the places you cannot easily see: the back of your neck, your ears, and the part in your hair.
Habits that fix most of this are simple. Clip your hat on before you launch. Pack a spare dry shirt. Put sunscreen on exposed skin at launch and again at midday. None of it is complicated, but all of it adds up over a full day on open water.
Which paddling-friendly tees, caps, and accessories do we offer?
Joy & Paddling offers paddling-inspired clothing for everyday wear. No UPF rating or quick-drying performance has been verified for our printed T-shirts. Check each product page for its actual fabric, sizing and care details; choose separate technical clothing suited to your paddling conditions.
Joy & Paddling offers paddling-inspired clothing for everyday wear. No UPF rating or quick-drying performance has been verified for our printed T-shirts. Check each product page for its actual fabric, sizing and care details; choose separate technical clothing suited to your paddling conditions.
- I love Kayak T-Shirt: an easy everyday tee for the ride home or the beach.
- Kayaking Makes Me Wet T-Shirt: a playful option for your spare dry layer.
- I My Kayak T-Shirt: a clean design that wears well around camp.
Browse our full T-shirt prints, explore our caps, and see our accessories for waterproof phone bags, sunglasses straps, and more.
FAQ
What is the best clothing to wear while kayaking?
Wear a UPF 50+ long-sleeve shirt, quick-dry pants, sun gloves, a hat with neck protection, and wraparound UV sunglasses. Choose synthetic fabrics that dry fast rather than cotton. Add sunscreen to any exposed skin, since clothing and shade come first in public health guidance.
Is UPF clothing better than sunscreen?
For covered skin, yes, because clothing is a constant barrier that does not wear off or need reapplying. Sunscreen is still necessary for your face, ears, and hands. The strongest approach is to use both together.
What is the best UV protectant for kayaks?
Look for a marine-grade UV protectant made for plastic, rubber, and gelcoat, and follow the maker’s directions. It slows fading and cracking from sun exposure. Store your kayak in shade or under a cover when you can.
What is the 120 rule for kayaking?
A cold-water safety guideline adds air and water temperature to signal a risk of cold shock. It is about hypothermia, not sun exposure. Check it before dressing for any paddle.