How to Choose the Right Wetsuit Thickness
How to Choose the Right Wetsuit Thickness
Cold Water Doesn’t Care How Tough You Are
Picking a wetsuit isn’t about looking tough in the parking lot. It’s about staying warm enough to actually enjoy your session, paddle longer, and stop thinking about your hands going numb halfway through.
The right thickness comes down to water temperature, wind, how long you’re staying out, and how easily you personally get cold. For most surfers, a wetsuit that fits well and lets you move will feel warmer than a thicker suit that holds you stiff.
| Water Temperature | Recommended Wetsuit |
|---|---|
| 75°F+ (24°C+) | Boardshorts / Rash Guard |
| 70–75°F (21–24°C) | 2mm Spring Suit |
| 65–70°F (18–21°C) | 3/2mm Full Suit |
| 58–65°F (14–18°C) | 4/3mm Full Suit |
| 52–58°F (11–14°C) | 5/4mm Hooded Full Suit |
| Below 52°F (11°C) | 5/4mm+ Hooded Suit, Boots & Gloves |
The 3/2mm: Your Warm-Water Suit
A 3/2mm wetsuit is built for warmer water and shoulder-season days. It’s flexible enough that you forget you’re wearing it, which matters more than people think — the suit that lets you paddle freely is usually the one that ends up keeping you warmer, too.
The 4/3mm: The Workhorse
For a lot of cold-water surfers, the 4/3mm is the suit that gets the most use. It covers a wide stretch of spring and fall conditions without sacrificing the flexibility you need to actually surf well.
When You Need a Hood
Once winter shows up, a 4+/3mm hooded or 5+/4mm hooded wetsuit stops being optional. Pair it with boots and gloves and you can stay out a lot longer when conditions get serious.
Why Fit Matters More Than the Number
A wetsuit should feel snug, not restrictive. A slightly thinner suit that actually fits will almost always feel warmer than a thicker one that doesn’t — water that gets in and moves around is what steals your heat, not the millimeter count on the tag.
FAQ
What wetsuit thickness do I need?
Most surfers land on a 3/2mm, 4/3mm, or hooded 4+/3mm / 5+/4mm depending on water temperature.
Is a 4/3 warm enough for New England?
For spring and fall, yes. Winter usually calls for a hooded 5+/4mm.
Does thicker always mean warmer?
No. Fit, seam construction, and how well the suit seals against your skin matter just as much as thickness.
What’s the best cold-water wetsuit? A hooded suit that actually fits you, with sealed seams and neoprene that flexes instead of fighting you. That’s the 5+/4mm Hooded Wetsuit.