Does the sauna get hotter when you add water?

Have you always wondered if a sauna gets hotter when you add water? We have studied this question and in this article we explain the different factors and how they affect the temperature.
The effect of water in the sauna: does it really increase the heat?
© andriiborodai/

The effect of water in the sauna: does it really increase the heat?

The sauna – a place of relaxation and recreation. But what is there to the myths and legends surrounding this wellness oasis? One question that concerns many sauna visitors is the addition of water to the hot stones. Some claim that this increases the heat in the sauna. But is this really the case? Opinions on this subject are divided.

Some believe that pouring water on the stones increases humidity and thus increases sweating. Others believe that the water on the stones leads to a higher temperature and thus increases the heat in the sauna. But what is the truth now? We set out to find answers and came to a clear conclusion. Read on to find out what’s really behind this myth.

Physical basics: how does heating a sauna work and what role does water play?

To understand how a sauna is heated and what role water plays in it, we need to look at the physical basics. A sauna is heated by a stove filled with stones. These stones store heat and release it into the air inside the sauna. When water is poured on the hot stones, water vapor is created, which provides higher humidity. This humidity prevents rapid drying while sweating and increases our well-being.

However, the water infusion does not affect the temperature in the sauna, as it is only a change in humidity. The temperature is determined solely by the heater and the amount of heated stones. So there is an interplay of heat and humidity in the sauna that makes for a comfortable and healthy sauna experience. If we understand these physical principles, we can get the most out of the sauna and relax completely.

What happens when you add water to an infusion

When you add water to an infusion in the sauna, several things happen. First, the humidity is increased, making sweating more intense and improving blood circulation to the skin. The respiratory tract is also moistened and cleansed by the moist steam. But how does the addition of water affect the climate in the sauna?

In fact, it can cause the temperature to drop slightly for a short time as the evaporating water absorbs energy and cools the air. After a short time, however, the temperature rises again and may even be higher than before, as the steam distributes the heat more evenly in the room. So overall, the addition of water makes for a more pleasant sauna experience and a better effect on the body.

Temperature measurements: Differences before and after adding water?

When visiting a sauna, it is good practice to pour water on the hot stones to increase the humidity. But how does this actually affect the temperature measurement? Research has shown that the measured temperature actually decreases slightly when water is added to the humidity. This is because higher humidity allows for better heat conduction, which means that heat is dissipated more quickly.

But don’t worry, this effect is usually so small that it doesn’t significantly affect the sauna experience. So the ritual of pouring on the stones remains a tried and true beneficial element in the sauna. So feel free to indulge in this little luxury and enjoy the soothing warmth and relaxation that a sauna provides.

Important notes on the use of water in the sauna

Infusing water is an important ritual when visiting the sauna. However, there are some tips that should be followed to not only enjoy a pleasant sauna experience, but also to avoid health risks. First, it is advisable to pour the water only on the designated stones and not to use cold water. Also, make sure that the water does not get directly on your skin, but is distributed in the form of steam.

Also, avoid inhaling the steam directly over the sauna heater, as this can cause respiratory irritation. On top of that, make sure you drink enough fluids to compensate for the loss of fluids from sweating. Follow these tips and enjoy a relaxing sauna session with the proper use of water!

Conclusion: summarizing the topic and answering whether adding water increases the heat in a sauna

Water vapor increases the humidity in the sauna and thus the perceived temperature. This can lead to a more intense sweating experience and also has health benefits as the body is cleansed through sweating. However, care should be taken not to add too much water at once to avoid overheating. For a pleasant and healthy climate, it is also important to let fresh air into the sauna regularly. So, all in all, it can be said that adding water to the sauna is definitely recommended and contributes to a better sauna experience.