What’s the optimal temperature for a hot tub?

When our customers visit us in our award-winning showroom at Ruxley Manor Garden Centre, we often get asked what is the optimal temperature for a hot tub? The answer can be pretty straightforward, however there are other elements to consider, including the hot tub temperature range, body temperature, weather conditions and health risks.

Hot tub temperature range

Most hot tubs have a minimum temperature of 26°C and a maximum temperature of 40°C for safety reasons. The only time you might contemplate going as low as 26 degrees is if you want to chill off in the hot tub during the summer. On the other hand, 40 degrees is quite hot and uncomfortable for some individuals. The short answer to the question "How hot should my hot tub be?" is between 37°C and 40°C to get the most out of the benefits of hot water.

Body temperature and hot tub temperatures

Your body temperature is usually around 37 degrees Celsius. This can have a significant impact on your hot tub experience. You may feel a mild chill if the water temperature is below 37 degrees. When you wish to cool off in hot weather, this might be a pleasant sensation. Alternatively, if the ambient temperature is cooler in the winter, you may wish to add a few degrees above 37°C. This is because the hot tub cools slowly with the cover off, so if you plan on soaking longer, you will stay toasty for longer!

The key to finding the perfect hot tub temperature

Put it to the test! Finding the perfect hot tub temperature for you may involve some trial and error. As long as you’re aware of the health considerations, try out our range of temperatures. You may discover that different temperatures suit you better depending on the season.     

Health Risks

• If you’re pregnant, make sure you consult your doctor before jumping into a hot tub
• Children under 5 should not be getting into a hot tub that is over 35°C and should only be in the tub for between 5-10 minutes at a time.
• When enjoying a hot tub, make sure you stay hydrated.

Questions our customers ask us

• How long does a hot tub take to heat?

This varies based on the heater's capacity, flow, hot tub size, ambient temperature, and insulation quality. In general, a hot tub warms up at a rate of 1 degree each hour.

• What happens to my hot tub when I go away?

It's worth lowering the hot tub temperature to save money on heating and possibly reduce chemical usage. Because most hot tubs include freeze protection, there is a low risk of freezing in the winter.

• What should I do if the temperature of my hot tub does not drop?

In the summer heat, the outdoor temperature can make it difficult to lower the hot tub temperature. To lower the temperature, either partially drain and add cool fresh water or remove the cover for a period of time.

The Hot Tub and Swim Spa Company specialise in providing hot tubs, swim spas, pools and gazebos and have experience of over 50 years in this industry. We also offer servicing and post-sales care for all of our customers to make sure that our customers get the best out of their hot tub. We are proud to have a multi award-winning showroom located in Kent, so please come down and try out our huge range.