Wetsuit thickness by water temperature
Enter the water temperature where you surf and how you handle the cold. You get the wetsuit thickness to buy and the boots, gloves or hood that go with it.
Inputs
The sea temperature where you surf, from a buoy, a surf report or a thermometer.
Cold-sensitive surfers go a step warmer; wind and long sessions also call for more neoprene.
Wetsuit core thickness
3mm
3/2 mm full suit for 60 °F water.
The everyday all-rounder.
- Suit
- 3/2 mm full suit
- Boots
- No
- Gloves
- No
- Hood
- No
At 60 °F the suggested wetsuit is a 3/2 mm full suit, with 3 mm of neoprene over the chest and core. Extra kit: none. The chart shows the core thickness two published guides suggest at each water temperature, getting thicker as the water gets colder, with your temperature marked.
How it works
The calculator looks your water temperature up in a chart. It uses Vissla’s, which has clean, non-overlapping bands, and draws SurferToday’s wider, overlapping ranges around it so you can see where the two guides agree.
| Water temperature | Suit | Core thickness |
|---|---|---|
| 66 °F (19 °C) and up | 2 mm spring suit, or a top with boardshorts | 2 mm |
| 59–65 °F (15–18 °C) | 3/2 mm full suit | 3 mm |
| 52–58 °F (11–14 °C) | 4/3 mm full suit | 4 mm |
| 45–51 °F (7–10 °C) | 5/4 mm full suit | 5 mm |
| Below 45 °F (7 °C) | 5/4/3 mm or 6/5 mm, hooded | 5–6 mm |
- Between the published numbers. Vissla’s ranges are whole degrees with a gap between them (58 and 59), so each band here starts at its lower number: 58.5 °F is a 4/3.
- Cold tolerance. If you feel the cold, the calculator looks up a temperature 3 °F lower, and if you run warm, 3 °F higher. Both guides say cold tolerance matters, but neither gives a number, so the 3 °F step is ours.
- Extras. Boots below 52 °F, gloves below 50 °F and a hood below 48 °F, all from Vissla.
Worked example
Water at 14 °C (57 °F) for someone of average cold tolerance falls in the 52–58 °F band, so the answer is a 4/3 mm full suit with 4 mm of neoprene over the core. The boots threshold (52 °F) is not reached, so none are suggested. SurferToday’s range for 52–58 °F is 4/3 to 5/4/3, which includes it.
The same 14 °C for someone who feels the cold is looked up as 54 °F, which is still a 4/3 but closer to the 5/4 edge. At 50 °F the same person is looked up as 47 °F, so they get a 5/4 mm suit with boots, gloves and a hood.
Tips from the water
- Wind and air matter. Both guides warn that air temperature and wind can make you feel colder before and after your session. Go up a thickness if you surf early or sit around between waves.
- Fit first. A thinner suit that fits snugly beats a thicker one that floods. There should be no gaps at the lower back, chest or crotch.
- Mind the session length. Vissla describes a 3/2 as enough for a two-hour session in its range. Longer sessions, or sitting still between sets, call for a step up.
- Use the temperature at your beach. A buoy or surf report can differ from the water where you paddle out, so a thermometer reading beats a regional number.
FAQ
What thickness wetsuit do I need for 60 °F water?
A 3/2 mm full suit. Vissla puts 59 to 65 °F (15 to 18 °C) at 3/2, and SurferToday's range for 58 to 63 °F is 3/2 to 4/3. If you feel the cold, or the wind is up, a 4/3 is the safe choice.
What do the two numbers in 4/3 mean?
The first is the neoprene thickness in millimetres over the chest and core, the second over the arms and legs. A third number, as in 5/4/3, is the arms, so the suit is thinnest where you paddle.
Is a 4/3 warmer than a 3/2?
Yes, by about a millimetre of neoprene over the core, which Vissla puts at roughly 30% more core insulation, and 4/3s usually come with sealed seams that let in less water. Both guides move you to a 4/3 at about 58 °F.
When do I need boots, gloves and a hood?
Vissla says to add boots when the water falls below 52 °F, to start considering gloves under 50 °F and that a hood is critical below 48 °F. The calculator uses those three numbers.
Why do two guides give different ranges?
SurferToday's ranges overlap, so at 62 °F it allows a 2 mm or a 4/3, while Vissla gives one answer for each temperature. The chart above shows both guides as a band, and the headline follows Vissla's single answer.
Sources
- Wetsuit Thickness Guide: 3/2, 4/3, 5/4 by Water Temp, Vissla. Chart of water temperature to thickness in non-overlapping bands (66 °F and up 2 mm; 59–65 3/2; 52–58 4/3; 45–51 5/4; below 45 5/4/3 or 6/5 hooded), and its boots (below 52 °F), gloves (under 50 °F) and hood (below 48 °F) thresholds.
- The wetsuit thickness and water temperature chart, SurferToday. Chart with overlapping ranges, from 6/5 mm below 42 °F to a rash guard above 72 °F, and the reminder to consider air temperature, wind and cold tolerance.
Formula and sources last checked September 30, 2026. How we test formulas.
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Safety note: Estimates only. Equipment ratings vary by manufacturer, so always follow the manufacturer’s instructions and ratings, and ask a qualified professional when safety is at stake.