7 Best UV-Blocking Swim Shirts for Sun Safety That Dermatologists Recommend

Protecting your skin from harmful UV rays is crucial, especially when you’re enjoying long days at the beach or pool. UV-blocking swim shirts offer an effective barrier against sun damage, reducing your risk of sunburn and lowering long-term skin cancer risks.

We’ve researched and tested dozens of options to bring you the seven best UV-blocking swim shirts that combine superior sun protection with comfort and style. These top performers feature UPF 50+ ratings, quick-drying fabrics, and designs that look good while keeping you safe from the sun’s harmful effects.

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Why UV-Blocking Swim Shirts Are Essential for Sun Protection

Understanding UPF Ratings and Sun Safety

UV-blocking swim shirts feature Ultraviolet Protection Factor (UPF) ratings that indicate how effectively fabrics shield your skin from harmful rays. A UPF 50+ rating blocks 98% of UV radiation, significantly reducing your sun exposure risk. Unlike regular t-shirts (UPF 5-7), these specialized garments use tightly woven fabrics and protective treatments to create a reliable barrier between your skin and damaging UV radiation.

The Difference Between UPF and SPF

UPF measures fabric’s ability to block UV rays, while SPF refers to sunscreen’s effectiveness against UVB rays only. UPF ratings evaluate protection against both UVA and UVB radiation. Unlike sunscreen that degrades over time, requires reapplication, and misses spots, UV-blocking swim shirts provide consistent, lasting protection. This physical barrier works even when wet and covers large body areas consistently without the hassle of frequent reapplication.

What to Look for When Buying UV-Blocking Swim Shirts

UPF Rating

The UPF (Ultraviolet Protection Factor) rating is the most crucial element to consider when selecting a UV-protective swim shirt. Always prioritize shirts with a UPF 50+ rating, which effectively blocks 98% of both UVA and UVB rays. This top-tier rating provides maximum sun protection for your skin during extended water activities and beach outings.

Fabric Technologies

Look for swim shirts made from specialized quick-drying fabrics specifically designed for UV protection. Premium options like Coolibar’s Aqua Vesta™ and Title Nine’s UPF 50+ fabrics offer superior protection while remaining lightweight and resistant to chlorine and saltwater damage. These technical fabrics maintain their protective properties even after repeated washing and exposure.

Coverage and Style

Consider how much skin coverage you need based on your activities and sun sensitivity. Long-sleeve options provide comprehensive protection and reduce the need for constantly reapplying sunscreen on your arms. Short-sleeve rashguards offer a balance between protection and freedom of movement. Choose styles that align with your specific water activities and personal preferences.

Comfort and Fit

Select swim shirts with features designed for comfort during extended wear in water. Look for flat seam construction that prevents chafing, thumbholes that keep sleeves in place while swimming, and relaxed fits that allow full range of motion. The right fit ensures you’ll actually wear your protective gear consistently rather than leaving it in your beach bag.

Additional Features

Consider practical elements that enhance functionality for your specific needs. Features like easy-access zippers, secure pockets for small essentials, and attached hoods for added neck protection can significantly improve your experience. These thoughtful additions make UV-protective swim shirts more versatile for various water activities beyond just swimming.

Key Features of Quality UV Protection Shirts

Quality UV shirts combine exceptional sun protection with practical features that enhance performance in water. The gold standard UPF 50+ rating blocks 98% of harmful rays while specialized quick-drying fabrics resist degradation from chlorine, salt, and repeated washing. Look for comfort-enhancing details like flat seams, strategic ventilation, and raglan sleeves that prevent shoulder irritation during active water sports.

Fabric Technologies That Block Harmful Rays

Advanced UV-blocking fabrics use specialized weaves and treatments to create physical barriers against radiation. Premium options incorporate zinc oxide or titanium dioxide particles directly into fabric fibers for enhanced protection without chemical treatments. These technologies maintain protective properties even when wet, unlike standard cotton that loses up to 50% of its UV resistance when saturated. The best fabrics also feature moisture-wicking properties that enhance comfort during active water sports.

Best Overall UV-Blocking Swim Shirt: Coolibar UPF 50+ Long Sleeve Shirt

Superior Sun Protection Technology

The Coolibar UPF 50+ Long Sleeve Shirt provides maximum protection by blocking 98% of both UVA and UVB rays. This highest possible UPF rating ensures your skin stays protected during extended periods outdoors. The clinically tested fabric creates an effective barrier against harmful radiation, significantly reducing your risk of sun damage and skin cancer while enjoying water activities.

Comfort and Durability Features

This swim shirt excels in real-world performance with chlorine and saltwater resistant fabric that maintains integrity through multiple swimming sessions. You’ll appreciate the lightweight, quick-drying material that keeps you comfortable both in and out of water. The Hightide model offers a relaxed fit with a sporty yet feminine design, available in various colors and patterns. Practical features like thumbholes, quarter-zip necklines, and side zip pockets enhance functionality for all-day wear.

Best Budget-Friendly Option: Baleaf UPF 50+ Rashguard

Affordable Sun Protection Without Compromise

The Baleaf UPF 50+ Rashguard delivers premium sun protection at a wallet-friendly price. This budget option blocks 98% of harmful UVA and UVB rays with its UPF 50+ rated fabric. You’ll appreciate the lightweight, quick-drying material that doesn’t sacrifice comfort for affordability. The flatlock seams and raglan sleeve design prevent chafing while allowing full range of motion during water activities like swimming, surfing, and kayaking.

User Reviews and Performance Analysis

Users consistently praise this rashguard for keeping them cool and protected during extended sun exposure. The quick-drying, moisture-wicking fabric performs impressively in real-world conditions, maintaining comfort both in and out of water. Performance tests confirm the Baleaf doesn’t restrict movement during active water sports, while its durability and easy care (machine washable) have earned loyal customers who appreciate maximum protection without the premium price tag.

Most Stylish UV-Blocking Swim Shirt: Roxy UPF 50+ Fashion Rashguard

Combining Fashion With Sun Safety

Roxy UPF 50+ Fashion Rashguard masterfully blends style with serious sun protection. This fashionable piece blocks 98% of harmful UVA and UVB rays while featuring trendy cuts and designs that don’t scream “sun shirt.” The lightweight, breathable fabric ensures you’ll stay cool during beach volleyball games or paddleboarding sessions, proving protective swimwear can be both functional and fashion-forward.

Available Colors and Design Options

Roxy offers an impressive range of colors and patterns, from vibrant tropical prints to subtle solids with contrast stitching. Their signature surfing-inspired designs include ombré effects, geometric patterns, and floral prints that complement various swimwear combinations. Many styles feature flattering color blocking and stylish details like thumbholes and zippered necklines, giving you versatile options for expressing your personal beach style.

Fabric and Comfort

The Roxy UPF 50+ Fashion Rashguard excels in comfort with its four-way stretch fabric that moves with your body during active water sports. Its quick-drying material prevents that uncomfortable clingy feeling after swimming, while the flatlock seams eliminate chafing during extended wear. The lightweight construction maintains breathability even on hot days, and the fabric’s soft touch against skin makes it comfortable enough for all-day wear without irritation.

Additional Features

Roxy’s rashguard incorporates thoughtful details that enhance both functionality and style. The raglan sleeve design allows unrestricted arm movement for swimming or paddling. Many models feature convenient thumb holes to keep sleeves in place during active water sports. The fabric maintains its UPF properties even when wet, unlike regular clothing that loses sun protection when soaked. Plus, the chlorine-resistant material prevents fading and deterioration, ensuring your stylish rashguard remains vibrant season after season.

Best UV-Blocking Swim Shirt for Kids: O’Neill Youth Basic Skins UPF 50+

When it comes to protecting your little ones from the sun’s harmful rays during water activities, the O’Neill Youth Basic Skins UPF 50+ stands out as the top choice for children.

Child-Specific Protection Features

The O’Neill Youth Basic Skins offers exceptional sun safety with UPF 50+ fabric that blocks 98% of harmful UVA and UVB rays. Its quick-dry material ensures comfort during long days of water play, while providing additional protection against sand, salt, and chafing. These versatile rash guards shield kids from environmental irritants and even insect bites, making them perfect for all water adventures.

Ease of Use for Parents and Children

Parents appreciate the O’Neill Youth Basic Skins’ relaxed fit and flat seam construction that prevents irritation on sensitive skin. The convenient zipper design makes it easy to put on and take off—even when wet—reducing struggles with squirming children. Maintenance is hassle-free thanks to the lightweight material that requires just a cold water rinse before drying flat, saving valuable vacation time for more fun activities.

Best Performance UV-Blocking Swim Shirt: Patagonia R0 UPF 50+ Performance Top

Athletic Design and Movement Benefits

The Patagonia R0 UPF 50+ Performance Top excels in athletic functionality with its ergonomic design that moves with your body. Its raglan sleeve construction eliminates shoulder seam chafing while swimming or paddling. The four-way stretch fabric allows unrestricted movement during intense water activities, preventing the shirt from riding up. Flatlock seams further reduce friction against skin, making this top ideal for surfers, paddleboarders, and competitive swimmers.

Sustainability and Eco-Friendly Aspects

Patagonia demonstrates environmental leadership with this performance top made from 85% recycled polyester. The fabric production uses significantly less water and generates 35% fewer carbon emissions than conventional materials. The durable construction extends product life, reducing consumption over time. Patagonia’s Worn Wear program also accepts these tops for repair or recycling, completing a sustainable lifecycle. The company donates 1% of sales to environmental preservation efforts.

How to Care for Your UV-Blocking Swim Shirt

Washing Tips

• Rinse Immediately: Always rinse your UV swim shirt with cold water right after use to remove salt, chlorine, and sand that can degrade the fabric and its UV protection.
• Use Gentle Detergent: Wash your swim shirt with mild soap or gentle detergent specifically formulated for performance fabrics. Avoid bleach and fabric softeners that can break down UV protective properties.
• Hand Washing Preferred: Hand wash your UV shirt whenever possible. If using a machine, select the gentle cycle and place the garment in a mesh laundry bag to prevent stretching.

Drying Tips

• Skip the Dryer: Air dry your UV swim shirt away from direct sunlight. High heat from dryers can damage elasticity and UV protective treatments.
• Lay Flat to Dry: Rather than hanging (which can stretch the fabric), lay your swim shirt flat on a towel to maintain its original shape and protective properties.

Storage Tips

• Store Clean and Dry: Always ensure your swim shirt is completely dry before storing to prevent mildew growth that can damage the fabric.
• Avoid Compression: Store your UV shirt loosely folded in a drawer or on a hanger to prevent permanent creases that could weaken the protective fibers.

General Maintenance

• Regular Inspection: Check your swim shirt periodically for signs of fabric degradation like thinning, excessive stretching, or color fading, which indicate diminished UV protection.
• Rotate Usage: If you swim frequently, consider rotating between multiple UV shirts to reduce wear and extend the life of each garment.

Final Recommendations for Maximum Sun Safety

Investing in a quality UV-blocking swim shirt is one of the smartest decisions you’ll make for your skin health. Whether you choose the comprehensive protection of Coolibar the budget-friendly Baleaf or the stylish Roxy options you’re making a significant step toward reducing your skin cancer risk.

Remember that proper care extends the life and effectiveness of your UV protection. Rinse after each use wash gently and air dry away from direct sunlight.

For maximum protection pair your UPF 50+ swim shirt with a broad-spectrum sunscreen on exposed areas waterproof sunglasses and a wide-brimmed hat. This comprehensive approach ensures you can enjoy your favorite water activities while keeping your skin protected for years to come.

Frequently Asked Questions

What is a UV-blocking swim shirt?

A UV-blocking swim shirt is specialized swimwear designed to protect your skin from harmful ultraviolet radiation. Unlike regular t-shirts, these shirts are made with fabrics rated UPF 50+, which blocks 98% of both UVA and UVB rays. They’re made from quick-drying materials that maintain protection even when wet and are specifically designed for comfort during water activities.

What does UPF 50+ rating mean?

UPF (Ultraviolet Protection Factor) 50+ indicates that the fabric blocks at least 98% of harmful UV radiation. This is the highest protection level available in sun-protective clothing. While a regular t-shirt might only have UPF 5-7, a UPF 50+ swim shirt provides significantly more protection, reducing your skin’s exposure to potentially damaging rays that can cause sunburn and increase skin cancer risk.

How is UPF different from SPF?

SPF (Sun Protection Factor) measures how effectively sunscreen protects against UVB rays only, while UPF measures protection against both UVA and UVB radiation provided by fabric. Unlike sunscreen, which requires frequent reapplication and can miss spots, UPF-rated clothing provides consistent coverage over large areas of skin and maintains its protection even when wet.

What should I look for when buying a UV-blocking swim shirt?

Look for a UPF 50+ rating for maximum protection. Choose quick-drying fabrics that resist chlorine and saltwater damage. Consider coverage options (long-sleeve vs. short-sleeve) based on your sun sensitivity and activities. Comfort features like flat seams and relaxed fits ensure wearability. Additional functional features such as zippers and pockets can enhance usability during water activities.

How do I care for my UV-blocking swim shirt?

Rinse your shirt immediately after use to remove salt, chlorine, and sand. Use gentle detergents and avoid bleach and fabric softeners. Hand washing is ideal, but if machine washing, use a gentle cycle in a mesh bag. Air dry away from direct sunlight to maintain UPF properties and fabric integrity. Store clean and dry, and inspect regularly for signs of wear.

Do UV-blocking swim shirts work when wet?

Yes, quality UV-blocking swim shirts maintain their sun protection properties even when wet. Unlike regular cotton t-shirts that lose much of their sun protection when saturated, UV swim shirts use specialized fabrics with integrated UV-blocking particles that continue to shield your skin from harmful rays during water activities, providing consistent protection throughout your time outdoors.

Are UV shirts good for kids?

UV-blocking swim shirts are excellent for children, who have more sensitive skin and higher lifetime sun exposure risk. Products like the O’Neill Youth Basic Skins UPF 50+ block 98% of harmful rays while providing quick-drying comfort for active kids. They protect against environmental irritants and feature child-friendly designs with easy-on zippers and flat seams to prevent skin irritation.

How long do UV-blocking swim shirts last?

With proper care, a quality UV-blocking swim shirt can last 1-3 years of regular use. Factors affecting lifespan include frequency of wear, exposure to chlorine or saltwater, washing methods, and storage practices. To extend longevity, follow manufacturer care instructions, rinse after each use, air dry, and rotate between multiple shirts if possible.