Rash Guard vs Wetsuit: What to Wear Surfing
Published April 10, 2026SurfSpotGuide Editorial
The short answer: wear a wetsuit when the water is cold, and a rash guard when it is warm. Here is how to choose based on conditions, water temperature, and what kind of surfer you are.
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Quick Comparison
| Factor | Rash Guard | Wetsuit |
|---|---|---|
| Warmth | None — no insulation | Significant — traps body heat |
| Sun protection | Excellent UPF 50+ | Good (covered areas) but neck and face still exposed |
| Rash prevention | Yes — designed for this | Yes, but less flexible in warm conditions |
| Cost | $30–$80 | $80–$400+ |
| Best for | Warm water (72°F+) | Cold to cool water (under 72°F) |
What to Wear by Water Temperature
Water is warm enough — focus on sun protection
Mildly cool — light insulation needed for longer sessions
Cold enough to lose body heat without insulation
Cold water drains core temperature quickly
Serious cold — full coverage essential
For a more detailed thickness guide, see our wetsuit thickness chart.
Frequently Asked Questions
What is the difference between a rash guard and a wetsuit?
A rash guard is a thin lycra or polyester shirt for UV protection and preventing rashes. A wetsuit is thick neoprene for thermal insulation in cold water.
Do I need a wetsuit for surfing?
Depends on water temperature. Above 72°F (22°C), a rash guard may be sufficient. Below that, a wetsuit is recommended.
Can I wear a rash guard under a wetsuit?
Yes — many surfers do. It reduces friction and makes the wetsuit easier to put on.
What do surfers wear in Hawaii?
Most surfers in Hawaii wear boardshorts or a bikini with a rash guard. The water averages 76-80°F year-round, so a wetsuit is rarely needed.
What do surfers wear in California?
Southern California surfers typically wear a 3/2mm or 4/3mm wetsuit for most of the year. Summer in SoCal may only require a spring suit or trunks.
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// Free Gear Checklist
Don't buy the wrong gear.
Our free Beginner's Surf Guide has the exact gear checklist — what to buy first, what to skip, and how to pick a board and wetsuit that won't hold you back. Free, instant.
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