Wetsuit Thickness Guide

How It Works

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Find Your Water Temperature

Check the water temperature at your local surf spot or rental location. This guide covers every temperature range from tropical to arctic conditions.

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Match the Gear

Each temperature range lists the recommended wetsuit thickness plus accessories like boots, gloves, and hoods. Follow the recommendations to stay comfortable and safe.

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Print or Save

Print this guide to keep at your rental shop or save it for reference. Great for helping customers choose the right wetsuit for local conditions.

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Frequently Asked Questions

What do wetsuit thickness numbers like 3/2mm mean?

The first number is the thickness of the neoprene on the torso (where you need the most warmth), and the second number is the thickness on the arms and legs (thinner for flexibility). So a 3/2mm suit has 3mm on the torso and 2mm on the extremities. Thicker neoprene means more warmth but less flexibility.

How do I know if my wetsuit is too thin?

Signs your wetsuit is too thin include shivering within the first 15-20 minutes, numb fingers or toes, difficulty concentrating, and wanting to leave the water well before you normally would. If you experience any of these, move up to the next thickness level. Being slightly too warm is always safer than being too cold.

Do I need boots, gloves, and a hood?

In water above 65 degrees F, you generally don't need accessories. Between 55-65 degrees F, boots are recommended and gloves are optional. Below 55 degrees F, boots, gloves, and a hood are all essential. Your extremities lose heat fastest, so accessories make a bigger comfort difference than most people expect.

Should rental shops stock multiple wetsuit thicknesses?

Yes. If your water temperature varies by season, stock the two most relevant thickness ranges. For example, a shop in Northern California should carry 3/2mm suits for summer and 4/3mm for winter. Having the right thickness dramatically improves customer satisfaction and repeat bookings.

Tropical Waters (75°F+ / 24°C+)

Warm Waters (65-75°F / 18-24°C)

Cool Waters (55-65°F / 13-18°C)

Cold Waters (45-55°F / 7-13°C)

Very Cold Waters (Below 45°F / 7°C)