How Hot are Hot Tubs? Explainer Guide for Beginners

The majority of hot tub users choose a water temperature between 100°F-102°F. 104°F is the standard maximum temperature.

Always set the temperature of the hot tub according to your personal choice which depends on the temperature that suits your body.

How Much Time the Hot Tub Will Take to HEAT UP?

Various factors will affect how long it takes to heat a bathtub. These factors include the existing temperature of the water, how efficient your bathtub is, and also the quality of installation, including the cleaning and caulking,

Most hot tubs will heat up between 3 to 6 degrees per hour, taking anywhere between 4 to 20 hours to reach the right temperature. 

If you would like to speed up the method, you can put on covers therefore the heat can’t escape.

The temperature of the air outside also can be an element which means the warmer the temperature outside, the quicker your bathtub will heat up.

The good thing about hot tubs is that they maintain their heat, you only need to wait for your tub to heat up if you’re setting it up for the 1st time after you drained the water. Here’s how you can do it: How to remove the drain of the bathtub?

Also Read: How to Fix A Leaky Bathtub Faucet?

Hot Tub Weather Dependencies

Being able to vary your bathtub temperature allows you to relax and unwind all year round, whether it’s winter or summer. 

Lowering the temperature in summer will offer you a cool, refreshing boost on a hot day, and in winter, you can sink into the nice and cozy water as you see the steam rise into the cold air.

Hot Tub Temperature in Winter

The winter months are when most people will take full advantage of their hot tub. It is always recommended to keep the temperature at 38°C. 

Not only will this keep you warm, but it also helps to protect your hot tub because the heat generated stops your electrical converter from freezing over.

Make sure the covers are on when you’re not using them. This ensures the heat stays inside. Here’s Why Do Divers Use Hot Tub?

Hot Tub Temperature in Summer

Hot tubs don’t just need to be utilized in the winter; you can also use them to chill off in the summer season. 

Depending on how cool you would like the water to be, it is recommended to experiment with temperatures between 29 and 35°C to seek out the most comfortable temperature to suit you.

If you’re during a rush to chill down your bathtub, activate the water jets after you’ve dropped the temperature because the circulation of the water will lower the temperature quicker.

Maximum Temperatures

We don’t recommend running a hot tub with a temperature of above 40°C as this might harm your health. 

There are not any set regulations for max temperature but in the US the buyer Product Safety Commission says:

Hot tub water temperatures should never be higher than 102 degrees Fahrenheit.

A temperature of 100 degrees Fahrenheit equivalent to 35 degrees Celsius is measured safe for a healthy adult.

In the UK the Health and Safety Executive doesn’t detail a maximum temperature but they recommend that “The typical effective temperature of spa pools is 30–40 °C”.

A Personal Choice

Below 40°C the precise temperature you need to use will vary counting on the time of year, who is using the tub, and why they’re using it (for example, to relax and unwind or to get some relief from muscular aches and pains.)

We recommend trying different temperatures to understand what suits you best then adjusting from here counting on how you are feeling.

Also Read: How to Unclog Bathtub? 

Maintaining your Ideal Temperature

All the modern hot tubs provide controls that make maintaining and adjusting the temperature of your tub easy.

Built-in thermostats measure the water temperature and adjust the heating as needed. 

There is a button on the side of the hot tub you can turn up and right down to fit your temperature although with all modern tubs you won’t be able to turn the heat up beyond a hard and fast limit.


Choosing the proper temperature for your bathtub is a considerable challenge.

Not only does one got to balance your personal preferences with what’s safe for all of the users in your home.

You need to find the right temperature for you for different seasons.

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