How Cold Is It For A Dog To Swim

First responders often remind us in spring and fall that despite warm temperatures, the water is still cold. In fact, in northern climates, temperatures in most lakes and rivers don't rise until closer to July and drop rapidly in late September.

For example, in the Pacific Northwest, spring water temperatures average between 40 and 50 degrees. If it's closer to 80 degrees outside, that's a 40 degree difference! This temperature difference means that swimming outdoors can feel like jumping into a glacier.

With this in mind, it's important to pay attention to the water temperature when you and your dog go to the park or hike where there is a lake or river. A swimming hole with warm bathing water in late summer can be like freezing water in May.

water temperature dog

So, which water temperatures are worth paying attention to?

The answer depends on a variety of factors. Generally speaking, if it's too cold for you, it's probably too cold for your dog. Veterinarians at DogTrekker state that if the water feels too cold for you to stand up and wade through, then it's not great for your dog. Temperatures below 50 degrees can be problematic, especially with certain dogs (see breed section below).

However, the length of the swim is also a major factor. A quick dip or splash into a cold body of water is unlikely to cause problems for healthy dogs, especially if you dry them off afterwards. However, prolonged swimming in cold temperatures can lead to hypothermia.

Other factors to consider include wind chill, humidity and cloud cover. Any of these factors can put a wet dog in a situation where it's too cold.

Signs and Treatment of Hypothermia

Many pet parents are aware of the risks of canine heatstroke, but not the dangers of hypothermia for dogs. Hypothermia is characterized by an abnormally low body temperature and occurs in three stages: mild, moderate, and severe.

A dog's normal body temperature is between 99.5 and 102.5. Mild hypothermia in dogs is classified as a body temperature of 90 – 99°F (or 32 – 35°C), moderate hypothermia of 82 – 90°F (28 – 32°C), and severe hypothermia of Any temperature below 82 °F (28°C).

Your dog's temperature can be checked with a thermometer. If it's below 95 degrees, pets may be at risk for hypothermia. However, even without a temperature check, you can watch for signs that your dog is too cold and respond quickly. Treatment for hypothermia should begin immediately, as it can quickly become a life-threatening emergency.

Signs of hypothermia in dogs

trembling

lethargy

stiff muscles

pale or gray gums

tripping or lack of coordination

fixed and dilated pupils

low heart and breathing rates

collapse

Caring for Your Dog After a Cold Water Swim

Even if your dog isn't showing signs of hypothermia, be sure to take steps to warm him up after a swim.

Remove your pet from the cold water, towel dry him, and place him in a warm room. This could be your car.

Wrap your pet in a blanket.

Offer your dog hot liquids, such as chicken broth or warm milk.

If your pet doesn't respond to his body warming up within 30 to 45 minutes, go straight to the veterinarian.

Variety Notes

Small dogs, short-haired dogs, puppies and senior dogs, as well as dogs with heart or other medical conditions are more sensitive to cooler temperatures. If your dog falls into any of these categories, think twice before spending long hours at your local swimming pool. An indoor dog pool might be a better option, or a dog park with a creek for romping.

Double-coated dogs, such as huskies or Newfoundlands, were bred to thrive in the cold, writes Jennifer Coates of DVM. Other breeds are natural swimmers. These include most retrievers and other "water dogs." However, even these dogs have their limitations in cold water. For example, if your senior Newfie has a medical problem, check with your veterinarian before taking them out for a swim.

Safety Tips for Swimming with Dogs

Bring water so your dog doesn't want to drink river water or salt water. This helps avoid parasite exposure.

Remove the dog's collar so it doesn't snag any underwater vegetation.

Check for hot pavement on the way to a swimming location. The sand can also get very hot.

Avoid strong currents and rapids.

Be prepared for temperature fluctuations. Seek shade to cool off on hot days, and bring a towel to warm up after you cool off.

Shower after swimming. Someone shared this with me after I adopted a beagle who loves to swim. Moisture in a dog's fur for prolonged periods of time can cause skin irritation, which can lead to hot spots.

dog swimming equipment

While not required, a "float jacket" or dog life jacket can be very helpful, especially for dogs that aren't strong swimmers, or who spend a lot of time on the water. Dog lifejackets usually have a handle to pull them out of the water, and a leash attachment.