Wetsuit Thickness Chart
The right wetsuit thickness keeps you warm without overheating. Water temperature is the primary factor — this chart tells you exactly what to wear.
Wetsuit Thickness by Water Temperature
| Water Temp | Wetsuit Type | Thickness | Accessories |
|---|---|---|---|
| 24°C+ / 75°F+ | Rashguard or boardshorts | None or 1mm | None |
| 20-24°C / 68-75°F | Springsuit or 2mm fullsuit | 2mm | None |
| 17-20°C / 62-68°F | Fullsuit | 3/2mm | Optional booties |
| 14-17°C / 58-62°F | Fullsuit | 4/3mm | Booties recommended |
| 11-14°C / 52-58°F | Fullsuit | 5/4mm | Booties + optional gloves |
| 8-11°C / 48-52°F | Fullsuit | 5/4mm or 6/5mm | Booties + gloves + hood |
| Below 8°C / 48°F | Hooded fullsuit | 6/5mm+ | All required |
What the Numbers Mean
Wetsuit thickness is written as two numbers, e.g., "4/3mm." The first number is the torso thickness (thickest for core warmth). The second is arms and legs (thinner for flexibility). Higher numbers mean warmer but less flexible. Modern neoprene is far more stretchy than older suits.
Wetsuit Types
Wetsuit by US Region
| Region | Summer | Winter |
|---|---|---|
| Hawaii | Boardshorts | Boardshorts (2mm optional) |
| Southern California | 3/2 | 4/3 |
| Northern California | 4/3 | 5/4 + boots |
| Pacific NW (OR/WA) | 4/3 | 5/4 + boots + gloves + hood |
| Florida | Boardshorts | 3/2 |
| Mid-Atlantic (NC-NJ) | 3/2 | 5/4 + boots + gloves |
| Northeast (NY-MA) | 3/2 | 6/5 + full accessories |
| Texas / Gulf | Boardshorts | 3/2 or 4/3 |
Frequently Asked Questions
What thickness wetsuit do I need for 60°F water?
60°F (15°C) water calls for a 4/3mm fullsuit. You may also want neoprene booties for comfort, especially in sessions over an hour.
Can I surf without a wetsuit?
Yes, in water above 75°F (24°C) — like Hawaii, tropical destinations, and Florida in summer. A rashguard for UV protection is recommended. Below 68°F, most surfers want at least a 2mm suit.
How tight should a wetsuit be?
Snug everywhere with no loose fabric or air pockets, but not so tight it restricts breathing or movement. You should be able to swing your arms fully overhead. A new wetsuit will feel tight — neoprene stretches slightly with use.
How long does a wetsuit last?
With proper care (rinse after every use, hang dry in shade), a quality wetsuit lasts 2-4 years of regular use. Budget suits may last 1-2 years. UV exposure and improper storage are the main killers.
Is a 3/2 or 4/3 wetsuit better?
Depends on your water temperature. 3/2mm is more flexible and comfortable in 62-68°F water. 4/3mm is warmer for 58-62°F water. If you're between sizes, most surfers prefer being slightly too warm over slightly too cold.
Find Wetsuit Rentals Near You
Don't own a wetsuit yet? Many surf shops offer affordable rentals so you can try different thicknesses before buying.