Hygrometer and sauna: the importance of humidity for an optimal sauna experience

In this article you will learn everything you need to know about the role of humidity in the sauna and how to use a hygrometer to create the perfect sauna experience. Immerse yourself in the world of sauna and discover the importance of hygrometers and optimal humidity for your well-being.
Humidity at a glance: How a hygrometer influences the sauna climate
© Loraliu/depositphotos.com

The function of a hygrometer in the sauna

A hygrometer is an instrument for measuring the humidity of the air in the environment. In the sauna, it has the task of monitoring the relative humidity and ensuring that it remains in the optimal range. This is important because humidity has a significant impact on the sauna experience, affecting both the health benefits and the well-being of sauna-goers. A precise hygrometer helps to find the ideal balance between heat and humidity to ensure a comfortable and healthy sauna experience.

The ideal humidity in the sauna

The optimal humidity in a sauna varies depending on the type of sauna and personal preferences. In the Finnish sauna, which reaches temperatures of 80 to 100 degrees Celsius, the ideal humidity is between 10 and 20 percent. Too much humidity can cause the heat to become unbearable and make it difficult to breathe, while too little humidity can dry out the mucous membranes, making them uncomfortable.

In a bio-sauna, also known as a sanarium or soft sauna, the ideal humidity is about 40 to 60 percent at a temperature of 45 to 60 degrees Celsius. In a steam sauna or steam bath, on the other hand, the ideal humidity is close to 100 percent, while the temperature is between 40 and 50 degrees Celsius.

The advantages of optimal humidity

Balanced humidity in the sauna provides numerous benefits for body and mind:

  • Relaxation and stress relief: Pleasant humidity contributes to a relaxing sauna experience and helps to relieve stress.
  • Strengthening the immune system: The alternation of heat and humidity stimulates and strengthens the immune system¹.
  • Promoting blood circulation: optimal humidity supports blood circulation in the skin and contributes to the regeneration of skin cells.
  • Cleansing the body: the combination of heat and humidity stimulates the flow of sweat, which cleanses the body of dirt particles on the skin².
  • Relieve respiratory ailments: Ideal humidity in the sauna can help relieve respiratory symptoms such as asthma or bronchitis³.

Choosing the right hygrometer for the sauna

To ensure optimal humidity in your sauna, it is important to choose an accurate and reliable hygrometer. There are several types of hygrometers on the market, including mechanical, electrical and digital models. When selecting a hygrometer, pay attention to the following criteria:

  • Accuracy: A hygrometer should have an accuracy of at least ±3 percent when measuring relative humidity.
  • Temperature resistance: The hygrometer should be designed for high temperatures, which are common in saunas.
  • Easy to read: choose a hygrometer with an easy-to-read scale or display to easily control humidity.
  • Easy installation: make sure that the hygrometer can be easily mounted in your sauna and does not require extensive installation.
  • Quality and durability: invest in a high quality hygrometer that is durable and resistant to the extreme conditions in a sauna.


Proper humidity is crucial for an optimal sauna experience, and a hygrometer is the ideal tool to monitor and regulate it. By choosing an accurate and reliable hygrometer, you can ensure that your sauna always provides the perfect balance of heat and humidity to promote your well-being and health.

You might be interested in:Sauna analog hygrometer

For many, the sauna is a place of relaxation and recreation. However, to realize the full potential of the sauna, it is important that the humidity in the sauna is right. This is where the analog sauna hygrometer comes into play.

The analog sauna hygrometer provides particularly accurate measurements of humidity in the sauna. It is perfect for different types of saunas such as banjas, Finnish saunas or barrel saunas and allows you to control the humidity in real time.

The hygrometer is made of high quality glass and polycarbonate, which ensures high heat resistance. This means you don’t have to worry about the hygrometer being damaged by high temperatures. It is a durable tool that will serve you well for many sauna visits.

The hygrometer is equipped with colored markings that indicate the optimal range of humidity in the sauna. This means that you can quickly and easily read the humidity at any time and act accordingly.

TFA Dostmann Analoges Sauna-Hygrometer, hitzebeständig, zum...



1: Kaltenbrunner, M. (2018). Taking a sauna strengthens the immune system. https://www.medizin-transparent.at/saunieren-staerkt-das-immunsystem

2: German Sauna Association (2018). Taking a sauna: Health Promoting Effects. https://www.sauna-bund.de

3: Kneipp, S. (2020). Sauna with cold: What you should consider. https://www.kneipp.com/de_de

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