Getting the right wetsuit thickness is key to keeping comfortable and warm while surfing, diving, or swimming. With different water temperatures, seasonal changes, and personal preferences, the thickness of your wetsuit will play a major role in your overall experience in the water. Here’s a guide on how to choose the best wetsuit thickness for every condition.
1. Understand Wetsuit Thickness Ratings
Wetsuits are labeled with thickness measurements, usually represented by two or three numbers (like 3/2mm or 5/4/3mm). These numbers indicate:
- First Number (e.g., 3mm): The thickness of the neoprene in the core or torso area to retain body heat.
- Second Number (e.g., 2mm): The thickness of the neoprene in the arms and legs to allow flexibility.
- Third Number (optional): If you see a third number, it indicates a different thickness in another area, like the lower body, commonly found in colder water wetsuits.
In general, thicker wetsuits provide more warmth but can be less flexible, so it's essential to balance warmth with flexibility based on your activity.
2. Match Thickness with Water Temperature
Here’s a guide to help match wetsuit thickness with water temperatures:
- Warm Water (69°F and above): A 1-2mm wetsuit top, springsuit, or short arm full works well for warm temperatures. A thinner suit is enough to keep the chill off without overheating.
- Mild Water (61°F - 69°F): A 3/2mm full wetsuit offers a balance of warmth and flexibility, great for conditions where it’s warm in the sun but cooler in the water. This is a popular choice for spring and fall.
- Cool Water (54°F - 61°F): A 4/3mm full wetsuit is typically ideal for these temperatures, as it provides warmth in both the core and extremities. Pair with booties or gloves if you plan to be in the water for extended periods.
- Cold Water (45°F - 54°F): A 5/4mm or 5/4/3mm wetsuit offers the insulation needed for cold conditions. Many surfers also use a hooded wetsuit in these temperatures.
- Very Cold Water (Below 45°F): Look for a 6/5mm or 6/5/4mm wetsuit. It’s best to have a hooded option, along with booties and gloves, for full-body insulation in icy conditions.
3. Think About Seasonal Conditions
Water temperatures can vary significantly with the season, so you may need different thicknesses throughout the year. In colder months, a thicker wetsuit is essential, while in warmer months, a thinner suit (or no wetsuit at all) might be more comfortable. Here’s a seasonal breakdown to consider:
- Spring/Fall: Water is often cooler, making a 3/2mm or 4/3mm full suit a comfortable option for mid-range temperatures.
- Winter: For colder water, a 5/4mm or thicker wetsuit provides necessary insulation. Winter surfers and divers often add accessories like a hood, gloves, and booties.
- Summer: In warmer climates or during peak summer months, a 2mm or thinner wetsuit should be sufficient, and in some places, just a rash guard will do.
4. Consider Your Activity Level
Your activity level also plays a role in selecting the best thickness:
- High-Intensity Activities (e.g., surfing, paddleboarding): You’ll naturally generate more body heat, so you might be comfortable in a slightly thinner wetsuit than suggested for the water temperature.
- Lower-Intensity Activities (e.g., diving, snorkeling): Since you’re less active and spending more time submerged, you may want a thicker suit to prevent the chill from setting in over time.
5. Know Your Personal Comfort and Sensitivity to Cold
If you’re someone who gets cold easily, consider going one thickness up from the standard recommendation for that water temperature. On the other hand, if you run warm, you might want to go slightly thinner, as long as it’s still appropriate for the conditions. Remember that wetsuits work by trapping a layer of water between your skin and the neoprene, which your body heats up.
6. Consider Extra Features for Warmth
When dealing with colder water, you may also want to look for wetsuits with these features:
- Thermal Lining: Wetsuits with a fleece or thermal lining are warmer and help retain body heat.
- Taped or Sealed Seams: This prevents water from seeping through seams, keeping you warmer for longer.
- Hooded Wetsuits: Adding a hood helps retain more body heat, which is especially useful for temperatures below 50°F.
Final Thoughts
Selecting the right wetsuit thickness is essential for staying warm and comfortable in the water. By taking into account the water temperature, seasonal conditions, your activity level, and your personal preferences, you’ll be able to find a wetsuit that’s just right for you. Having the right gear can turn chilly days into fun, comfortable experiences, and that’s always worth the investment.