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What's the Best Hot Tub Temperature?

So, 104°F for the regular hot tub soak - but that comes with a disclaimer. High temperatures over 100°F are NOT recommended for pregnant women, hypertensive people (with high blood pressure), or those with heart disease.

High temperatures can also irritate certain skin conditions, and temperatures of over 100°F are not recommended for children, who overheat more easily than adults.

But what about all those other spa activities, besides a spine-tingling hot soak? There are other recommended temperatures, depending on the use of the spa, hot tub or whirlpool.

What's the Best Hot Tub Temperature?


Exercises such as yoga, or various types of core workouts or stretching, can be exhausting in a hot spa. If you use your spa for exercise, especially active exercise, you'll find a temperature below 90°F to be more comfortable. It's also safer, to prevent overheating and hyperthermia.


For conditions such as arthritis, fibromyalgia and other chronic pain diseases, warmer hot tub temperatures increase circulation to the joints and allow for more comfortable therapeutic exercises. Also helpful for rehabilitative movements or therapies. For most warm water therapy, a temperature below the body temperature 98.6°F is desirable, something between 92°F–94°F.

Special Conditions

Children, obese people, and those with MS can overheat easily, and should not exceed 100°F in a spa or hot tub. In addition, it's important to limit your spa session time to 15–20 minutes, and take in non-alcoholic beverages to cool the body.

Pregnant women should take care not to exceed 92°F in the spa or hot tub, and take in plenty of water or juice before and after hot tubing, according to the Aquatic Therapy & Rehab Institute.

Those recovering from accidents or stroke can use a warm spa to slowly regain movements, by practicing simple flexion and extension exercises. Every patient may prefer a different temperature, but most will fall between 88°F–92°F.

Air Temperature

Also a factor in how hot or warm the water feels is the air temperature outside. An air temperature of 75°F may feel nice walking around outside, but can feel chilly as one sits in water that is below body temperature. 88°F may be perfect when the air temperature is above 80°F, but feel too cold when air temps are just above 60°F.

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Leslie’s makes every effort to provide accurate recommendations based upon current ANSI/APSP/ICC-5 2011 (R2022) standards, but codes and regulations change, and Leslie’s assumes no liability for any omissions or errors in this article or the outcome of any project. You must always exercise reasonable caution, carefully read the label on all products, follow all product directions, follow any current codes and regulations that may apply, and consult with a licensed professional if in doubt about any procedures. Leslie’s assumes no legal responsibility for your reliance or interpretation of the data contained herein, and makes no representations or warranties of any kind concerning the quality, safety, or suitability of the information, whether express or implied, including, without limitation, any implied warranties of merchantability or fitness for a particular purpose.