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How cold is too cold to swim without a wetsuit?

Author

Sarah Smith

Published Jan 25, 2026

21 DEGREES PLUS: Warm

the exhilarated feeling when you get out, that cold water 'tang'. On the plus side, some of you will be able to spend hours swimming without a wetsuit.

How cold is too cold to swim in?

No matter where you're swimming, avoiding water below 70 degrees Fahrenheit is a good rule of thumb for the average swimmer. The truth of the matter, though, is that 70 degrees is still pretty chilly.

Can you swim in cold water without a wetsuit?

Ensure you anti-fog your goggles before your swim as a warm face in cold water will fog goggles quickly. Mask goggles can offer better vision. Neoprene gloves and boots – these extra accessories can help keep the extremities warm while you swim. You can wear these even if don't wear a wetsuit.

At what temp do you need a wetsuit?

The range of 50 to 78 degrees is therefore the ideal range for using a wetsuit. Any warmer, and the swimmer may actually overheat due to the wetsuit's insulative qualities. Truth be told, we think it is pretty easy to get too warm inside a wetsuit even in the 74-77 degree range.

How long is it safe to swim in cold water?

If you feel cold for more than 10 minutes, abort the swim, and get yourself warm. Be aware that the temperature and wind on land may pose a risk for hypothermia even after exiting the water.

22 related questions found

Can you get sick from swimming in cold water?

So, yes, since the bacteria that cause the common cold can enter water, you can catch a cold from swimming in a pool. Although the chlorine in the pool might kill some germs, it might not kill all of the bacteria.

Does swimming worsen a cold?

Cold or Flu

Rest assists recovery and, naturally enough, helps avoid the likelihood of the infection being spread to others. Attending a swim lesson can potentially aggravate an ailment further, and may increase the severity and duration of an infection.

Can you swim in 60 degree water without a wetsuit?

Most pool temps are between 78 and 82 degrees. We can swim comfortably in temperatures from the mid-70s and above. Temps in the 60s are uncomfortable and may not be tolerated for long bouts in the water without a wetsuit. The 50s and below are dangerous without proper protection from a wetsuit.

Do you need a wetsuit for 60 degree water?

With 60 degree water you'll need a full wetsuit to keep from freezing. Depending on the length of the swim, you might be able to complete it without a wetsuit but your body will use up so much energy trying to keep warm that you'll be gassed and shivering when you get out of the water.

What wetsuit do I need for 15 degree water?

As the temperature drops between 16.5°C and 15°C, you may want to consider a full-length 3mm wetsuit.

How can I stay warm in water without a wetsuit?

Accessories Other Than Wetsuits That'll Keep You Warmer in Open Water

  1. Caps. Though many have long been told that you lose a majority of body heat through the head, that old wives' tale hasn't been borne out by science. ...
  2. Earplugs. ...
  3. Gloves. ...
  4. Booties. ...
  5. Find What Works for You.

Can you swim in 60 degree weather?

Any water temperature below 70 degrees should be treated with caution for those not wearing a wetsuit or drysuit, the National Center for Cold Water Safety warns. When water temperatures are between 60 and 70 degrees it becomes progressively more difficult to control your breathing.

Can you swim in 21 degree water?

21 DEGREES PLUS: Warm

On the plus side, some of you will be able to spend hours swimming without a wetsuit.

How cold was the water when the Titanic sank?

The temperature of the water was -2.2 degrees Celsius when Titanic was sinking.

Do I need a wetsuit for 62 degree water?

Although you can surf within 62-degree water (17°C) without a wetsuit, it will be hard to stay in for more than 30 minutes without feeling the cold. Your best chance is surfing on a day without wind.

Do I need a wetsuit for 65 degree water?

A Simple Wetsuit Temperature Guide

If the water temperature is 77-degrees Fahrenheit or 25-degree Celsius, you don't need a wetsuit. Any temperature below 77 F or 25 C you should wear a wetsuit, in some circumstances.

How long can you survive in 65 degree water?

At a water temperature of 40 to 50 degrees, death may occur in 1 - 3 hours. At a water temperature of 50 - 60 degrees, death may occur in 1 - 6 hours. At a water temperature of 60 - 70 degrees, death may occur in 2 - 40 hours.

Can I swim with runny nose?

Whether you have a cough, a runny nose, or just feel slightly “off,” if you're feeling sick at all, don't swim, even if it means missing a few workouts.

How do I stop shivering when swimming?

By repeated bouts of swimming in cold water that reduces the deep body temperature this will reduce the shivering response. This has the effect of enabling the swimmer to coordinate movement, but at the expense of greater deep body cooling compared to someone who is shivering.

Why does your nose run after swimming?

It's thought that the main culprits behind this annoying phenomenon are: water getting into the nose causing irritation of the delicate membranes in there; and, in some cases, reactions between commonly-used chemicals, like chlorine, and the bacteria, dirt and other things that inevitably gather in a pool releasing ...

Can you get pneumonia from swimming in cold water?

The sudden exposure to cold water can cause even the most experienced swimmers to lose control of their breathing and begin struggling in water. In the longer term, exposure to cold water can lead to hypothermia or pneumonia.

Can you get hypothermia from swimming in cold water?

“Cold is feeling cold, hypothermia is defined medically as a core body temperature drops below 35 ˚C, but your swimming performance is likely to be affected when it drops below 36˚C,” says OSS' expert medical advisor Dr Mark Harper of Brighton and Sussex Medical School.

Can you go into shock from cold water?

Body's reaction to cold water shock

Sudden immersion into cold water may cause cardiac arrest, even for a healthy person. The shock of the cold water can also cause an involuntary gasp reflex that can cause victims to swallow water and drown, even for a good swimmer. Cold water can paralyze the muscles instantly.

Is 18 degrees too cold to swim?

It's important to note that the study report did not recommend this rule. However, the research concluded that: “For lean, elite level swimmers, 16°C and 18°C will cause hypothermia in under two hours. For a shorter swim, 16°C is possible.