Choosing a Wet Suit for Oregon Waters

Diving in Oregon’s oceans, rivers, lakes, and other waters can mean cold water, changing conditions, and long periods of exposure. Choosing the right wetsuit helps you stay warmer, more comfortable, and better able to enjoy your dive. The best option depends on water temperature, dive duration, activity level, personal cold tolerance, and how well the suit fits.

Quick Answer: 5mm or 7mm Wetsuit?

A 5mm wetsuit may be appropriate for warmer conditions, shorter dives, or divers who tolerate cold well. A 7mm wetsuit generally provides more insulation for colder water and longer exposure. Many Oregon divers also use a hood, gloves, boots, or additional layers. Always match your exposure protection to current conditions and your individual needs.

How a Wetsuit Keeps You Warm

Wetsuits are generally made from neoprene. A properly fitted suit allows a thin layer of water inside, which your body warms. The neoprene then helps slow heat loss. If a wetsuit is too loose, cold water can continually move through it and reduce its effectiveness. If it is excessively tight, it may restrict movement or make breathing uncomfortable.

Fit is therefore just as important as thickness. A wetsuit should fit closely around the neck, wrists, ankles, and torso without creating painful pressure points.

Comparing Common Wetsuit Thicknesses

3mm Wetsuits

Lightweight 3mm suits are generally intended for warmer water, surface activities, swimming, snorkeling, or travel to warmer destinations. They are not usually the first choice for cold-water diving in Oregon.

5mm Wetsuits

A 5mm suit offers more insulation while retaining flexibility. Depending on the water temperature, length of the dive, and the diver’s cold tolerance, it may be used with a hood, gloves, boots, or an insulating layer.

7mm Wetsuits

A 7mm wetsuit provides greater insulation for colder conditions and longer dives. The added thickness can reduce flexibility, making proper fit especially important. Many cold-water divers pair a 7mm suit with suitable head, hand, and foot protection.

Don’t Forget Your Hood, Gloves, and Boots

A warm wetsuit cannot fully protect areas that remain exposed. Complete cold-water exposure protection may include:

  • A properly fitted scuba hood to reduce heat loss around the head and neck
  • Cold-water scuba gloves that balance warmth with dexterity
  • Supportive wetsuit boots for warmth, comfort, and fin use
  • Appropriate insulating layers designed for use with your exposure suit

When to Consider a Drysuit

For colder water, longer dives, repeated dives, or divers who become cold easily, a drysuit may offer better exposure protection. Drysuits require the correct undergarments, fit, maintenance, and training to use safely and comfortably.

Choosing the Right Fit

  • Check for gaps around the neck, wrists, ankles, and lower back.
  • Make sure you can move your shoulders, arms, and legs comfortably.
  • Confirm that the suit does not restrict normal breathing.
  • Try the suit with any hood, boots, gloves, or layers you plan to wear.

Get Help Choosing Your Oregon Diving Wetsuit

Coral Sea Scuba can help you compare thickness, fit, layering, and accessories for your planned dives. Browse our current selection of scuba wetsuits, or visit our Grants Pass dive shop for personal fitting assistance.

Questions? Contact Coral Sea Scuba or call (541) 472-8111.

Exposure-protection needs vary by diver and conditions. Check current water and weather conditions, follow your training, and consult an experienced dive professional when selecting equipment.