3mm vs 5mm Wetsuit (What Actually Works in Cold Water Surfing)
3mm wetsuits are for water 14-20°C and offer maximum flexibility. 5mm suits are for 8-14°C and prioritize warmth. Choose based on your local water temperature, not air temperature. If you surf across seasons, own both. If you can only buy one, a 4/3mm offers the best middle ground.
3mm wetsuits are for water 14-20°C and offer maximum flexibility. 5mm suits are for 8-14°C and prioritize warmth. Choose based on your local water temperature, not air temperature. If you surf across seasons, own both. If you can only buy one, a 4/3mm offers the best middle ground.
定義
A 3mm wetsuit suits water 14-20°C with good flexibility. A 5mm suit covers 8-14°C with maximum warmth but reduced mobility. The choice is a direct tradeoff between warmth and range of motion.
問題
You need a wetsuit but cannot decide between a 3mm and a 5mm. A 3mm might not be warm enough in winter, and a 5mm might be too thick and restrictive for warmer days. Guessing wrong means either freezing through winter or sweating through autumn.
仕組→
Neoprene thickness directly correlates to warmth and inversely correlates to flexibility. A 3mm suit (often 3/2mm with thinner arms) provides good mobility for paddling and surfing in mild conditions. A 5mm suit uses thicker neoprene on the torso and often thinner panels on the arms and legs (5/4/3mm) to maintain some flexibility. The warmth difference is about 6-8°C range. Key differences: 5mm suits use more neoprene material, weigh roughly 40 percent more, take longer to dry, and require more effort to take off. Modern super-stretch neoprenes are closing the flexibility gap, but 5mm still restricts movement noticeably.
解決→
Determine your coldest monthly average water temperature using local buoy data. If it is above 16°C, buy a 3/2mm. If it is between 12-16°C, buy a 4/3mm. If it is below 12°C, buy a 5/4/3mm. For year-round surfing with a single suit, a quality 4/3mm with thermal lining plus a separate hood, boots, and gloves covers the widest range.
主な比較
おすすめ
The Aquafarer Wetsuit Pro in 5/4/3mm handles 8-16°C with thermal lining to offset the warmth gap of a true 5mm. If you mostly surf in mild conditions (16-20°C), the 3/2mm Aquafarer Wetsuit Pro offers better flexibility and comfort.
よくある質問
Can I wear a 3mm in 10°C water? ▼
Only for very short sessions (20-30 minutes) and with a thermal rash guard underneath. You will be cold for most of the session. A 5mm or 5/4/3mm is strongly recommended for 10°C water.
Is a 5mm wetsuit too warm for summer? ▼
If summer water temperature exceeds 18°C, a 5mm suit will cause overheating. You can flush the suit with cool water, but you will be more comfortable in a 3/2mm or spring suit during summer months.
Does a 5mm wetsuit restrict paddling? ▼
Yes, noticeably. The thicker neoprene at the shoulders requires more effort per paddle stroke. A 5/4/3mm suit with thinner arms helps, but you will still fatigue faster than in a 3mm suit.
What is the best wetsuit for year-round surfing? ▼
A 4/3mm full suit with chest zip and thermal lining covers 12-18°C, which is year-round in many temperate climates. Add boots for winter and you can surf 10-18°C with one suit.