Cold Water Kayaking: What to Wear on Puget Sound
- Dylan
- Mar 8
- 6 min read
Updated: Mar 22
Paddling in the Northwest
Kayaking in Puget Sound and the surrounding waters of the Pacific Northwest is incredible. Quiet winter mornings, long summer evenings, and access to places like the San Juan Islands make this one of the best sea kayaking regions anywhere.
But there is one thing that defines paddling here: cold water.
Even in summer, water temperatures in Puget Sound usually range from about 45° to 55°F. That means clothing choices matter. A paddler who ends up in the water without proper thermal protection can quickly lose dexterity in their hands and arms.
Experienced paddlers dress for the water temperature, not the air temperature.
This guide explains the clothing systems many paddlers use when kayaking on Puget Sound and similar cold‑water environments.
Why Cold Water Matters
Cold water removes heat from your body about 25 times faster than air.
Proper thermal protection is needed to prevent, or at least slow, rapid heat loss. After 10-15 minutes of immersion, most people lose the use of their hands, arms, and legs due to the lack of blood being pumped to the extremities. Once that happens, performing a rescue or even holding a paddle becomes much harder if not impossible.
The goal of cold‑water clothing is to slow heat loss long enough for you to get back in your kayak. This is why experienced paddlers focus on clothing systems that slow heat loss and preserve dexterity long enough to get back into their boat.
A Note on the 120-Degree Rule
You may have heard a guideline that goes something like this: if the combined air and water temperature adds up to 120°F or more, you don’t need immersion wear. Some versions put the threshold at 100°F. The specific number varies depending on who is repeating it.
The problem is that the two numbers don’t actually combine the way the rule implies. If you are in 50°F water, the air temperature—whether it’s 50°F or 80°F—has almost no effect on how long your hands and arms remain functional. You are in the water, not the air. Cold shock hits immediately. After roughly 10 to 15 minutes in 50°F water, most people lose the dexterity needed to get themselves back into a kayak or perform any meaningful self-rescue. That window doesn’t widen much because it’s a warm day.
That said, use your discretion. If you are paddling close to a busy beach on a summer afternoon, well within swimming distance of shore and other people, the calculus is different than if you are two miles into an open crossing in the San Juans. In the first situation, help is close and the consequences of a swim, while unpleasant, are manageable. In the second, you and your paddling partners are largely responsible for keeping each other safe, and outside help—whether from another vessel or the Coast Guard—may take time to arrive.
On Puget Sound and similar waters, when you move away from protected, populated shoreline, that responsibility shifts to you. Carrying a VHF radio or another means of reaching other boats and the Coast Guard is practical and worth doing. It doesn’t replace preparation and proper gear, but it means that if something goes wrong, you have a way to ask for help rather than hoping someone notices.
The honest version of the 120-degree guideline is this: use it as a rough prompt to think about conditions, not as a reason to leave your wetsuit at home. When help is close and conditions are forgiving, you have more room. When you are farther out and on your own, immersion protection is an easy decision.
Dry Suits
For many paddlers, a dry suit is the outfit of choice for cold water paddling. People have survived long periods of drifting with these on.
Modern dry suits are made from breathable waterproof fabrics and include latex wrist and neck seals along with waterproof entry zippers. Most now include waterproof socks, which you will greatly appreciate.
The suit itself does not offer any inherent warmth - so synthetic or wool layers underneath are necessary to retain body heat. Avoid any cotton or denim fabrics that lose their insulating abilities when wet. Get a relief zip!
Wet suits
Wet suits are another option, particularly for moderate temperatures or shorter immersion times.
Paddling wet suits are not as thick as dive suits, making them more comfortable to paddle in, but offering less thermal protection. A wet suit works by offering a layer of insulation, and also by warming a thin layer of water between your body and the suit. There are full body suits with varying thicknesses of neoprene that can be comfortable to paddle in, and limit the amount of water that enter.
To make them effective, you must limit the amount of water that enters your suit. If you have a constant exchange of new water, your body is working hard to reheat each new batch, leaving less warmth for your body core.
You can limit this exchange by making sure the suit is snug around the ankles, and by wearing a paddling jacket or dry top, with adequate insulated clothing (synthetic, fleece, wool, etc.) underneath.
Footwear
Neoprene booties are the most common footwear for sea kayaking. They provide insulation when wet, fit easily inside the kayak, and protect your feet during launches and landings. Around camp, it is more comfortable to wear boots, sneakers, or sandals.
Sandals can work in warmer conditions but they have their drawbacks. They are not as warm as booties, and do not offer any protection for the sides of your feet while walking over/ between sharp, barnacle-encrusted rocks.
Rubber boots are handy for walking in mud flats, but they are cumbersome getting in and out of your boat, and are really useless when you are in the water.
Looking for immersion wear or other paddling gear? Check out our online store.
Hypothermia
The greatest single danger to sea kayakers. Hypothermia is the lowering of the core body temperature. If allowed to drop too far, the body cannot generate enough heat on its own to rewarm.
Hypothermia Symptoms:
Intense shivering
Loss of coordination
Slurred speech
Confused mental state
Shivering is the body's way of fine-tuning its temperature. Light shivering does not necessarily mean you are hypothermic. If it becomes more violent, and is accompanied by loss of coordination, slow and labored movements, mild confusion, and inability to walk a 30' line properly, the person is in the early stages of hypothermia.
These symptoms become more severe as the victim's temp drops further, until unconsciousness, and usually heart failure, occurs.
Treatment
The best treatment of hypothermia is prevention. Once a person becomes severely hypothermic, it is impossible to rewarm them in the field. Get them to emergency care pronto!
For early hypothermia, you can add heat to the body core by applying warm packs to the groin, neck, and armpit areas; by disrobing the victim and a volunteer and placing them in a sleeping bag together so that the victim can use some of the volunteer's heat (although this is extremely slow and inefficient).
Hypothermia Prevention
Drink fluids before & during activity
Stay in reasonably good condition
Dress properly
Rest during your trip. Avoid exhaustion!
Eat adequately to replenish energy stores frequently
Building Skills for Cold Water Paddling
Good clothing is only part of cold water kayaking.
If you plan to paddle on larger water like Puget Sound, it is also important to develop the skills needed to handle wind, waves, and unexpected situations.
Our Fundamentals of Sea Kayaking (FOSK) class at Northwest Outdoor Center focuses on the core techniques used for day trips and sea kayaking around Puget Sound.
Cold Water Kayaking Clothing Checklist
Most paddlers heading onto Puget Sound carry clothing similar to the following:
• Synthetic or wool base layer
• Fleece or wool insulating layer
• Dry Suit or wet suit with paddling jacket
• Neoprene booties
• Warm hat and gloves
• Spare dry layers in a dry bag
This simple system keeps paddlers comfortable and prepared for the cold‑water conditions common throughout the Pacific Northwest. Remember, cooling off is easy, warming yourself up is not--dress accordingly.
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