Ideal Sauna Temperatures: Traditional, Infrared, and Steam Saunas

Ideal Sauna Temperatures: Traditional, Infrared, and Steam Saunas

To truly optimize your sauna experience, it’s crucial to understand and maintain the ideal sauna temperature. In this blog post, we’ll dive into the world of sauna temperatures, explore the Rule of 200, and provide insights into unlocking the perfect experience for various types of saunas including traditional Finnish (dry) saunas, infrared saunas, and steam (wet) saunas.

Understanding Sauna Temperature

The temperature of the sauna is crucial in creating the desired rise in core body temperature and corresponding therapeutic effects. It serves as the foundation for successful sauna therapy, influencing relaxation, detoxification, and overall well-being. Equally important is controlling humidity, especially when distinguishing between a wet steam sauna and a dry sauna. Each sauna type has unique temperature and humidity requirements to maximize its specific benefits and enhance the overall sauna experience.

It’s vital to understand that there is no “one-size-fits-all” or “best” sauna temperature; the optimal heat level varies greatly depending on individual comfort, tolerance, and the specific therapeutic outcomes desired.

Traditional Sauna Temperature (150-190°F)

Traditional saunas, also known as Finnish saunas or dry saunas, generally have a temperature range of 150-190°F (65-80°C) with low humidity levels ranging from 10-20%. This type of conventional sauna is heated using a stove or wood fire where the heat radiates through rocks to create a dry and hot environment. The low humidity creates a more intense heat, leading to profuse sweating and releasing toxins from the body.

In addition, the Finnish Sauna Society recommends incorporating the art of Löyly into the sauna experience. Löyly involves pouring water over the hot stones, creating a burst of steam that increases both the temperature and humidity. This practice enhances the sensations and benefits of the sauna session, further promoting relaxation, improving blood circulation, relieving muscle tension, and generating steam.

Infrared Sauna Temperature (120-150°F)

An infrared sauna operates at lower temperatures than a traditional sauna but has higher humidity levels due to the use of an infrared heater. The ideal infrared sauna temperature range is between 120-150°F (50-65°C) with humidity levels around 40%. Infrared saunas use infrared light to directly heat the body, leading to a deep penetrating heat that promotes detoxification and relaxation. Due to their lower temperatures, infrared saunas are also suitable for those who can’t tolerate the extreme heat of traditional saunas.

Steam Sauna Temperature (110-120°F)

Steam saunas, also known as wet saunas or Turkish baths, have a temperature range of 110-120°F (43-49°C) with humidity levels around 100%. The high humidity in steam saunas creates a moist environment that allows for gentle perspiration and hydration. The lower temperature and high humidity make steam saunas a popular choice for those who are sensitive to the intense heat of traditional saunas. Additionally, the steam can help soothe respiratory issues and clear skin pores for a refreshed feeling.

Different Heaters Provide Varying Temperatures

As you delve deeper into the world of saunas, it becomes clear that the type of heater used plays a crucial role in shaping the sauna experience. Electric heaters, often used in traditional saunas, operate between 150-190°F (65-80°C), offering a precisely controlled, stable heat source. Electric heaters can often be controlled by Wi-Fi and a mobile device, offering conveniences for easy pre-heating and temperature monitoring.

Wood-fired heaters, a favorite among purists, deliver temperatures in the same range but with a rustic touch, creating an ambiance of authenticity.

When selecting wood for a wood-fired sauna, it’s crucial to consider hardwoods like birch, oak, or maple. These wood types burn hotter and slower, providing excellent temperature control.


Infrared heaters, on the other hand, operate at a lower range of 120-150°F (50-65°C), providing a deep penetrating heat that efficiently induces sweat and relaxation. Infrared energy is emitted by these heaters in the form of electromagnetic waves, which are absorbed by objects and converted into heat.

Gas heaters are also an option, providing similar temperature ranges as electric and wood-fired heaters, but with quicker heat-up times. Each heater type has its unique charm and functionality, giving you the flexibility to tailor your sauna experience to your personal preferences and wellness goals.

Remember the Rule of 200

The Rule of 200 is a general guideline used to determine the ideal sauna temperature and humidity. According to this rule, the combined temperature and humidity should not exceed 200. For example, if the sauna temperature is set to 190°F, the humidity should not exceed 10%.

Temperature (°F) Humidity (%)
110 90
120 80
130 70
140 60
150 50
160 40
170 30
180 20
190 10

Measuring Temperature and Humidity

Accurate temperature and humidity measurements are crucial for maintaining the ideal sauna environment, including the desired temperature. To ensure an optimal sauna experience, follow these tips for measuring and monitoring sauna temperature and humidity:

  • Use a reliable thermometer and hygrometer specifically designed for saunas.
  • Place the thermometer and hygrometer in an ideal location, away from direct heat sources, and mounted at an appropriate height for accurate readings.
  • Regularly calibrate your instruments to ensure their accuracy.

Positioning the Thermometer and Hygrometer in the Sauna

The correct placement of your thermometer and hygrometer can significantly affect their readings and, consequently, your sauna experience. It’s recommended to mount these instruments at a height equivalent to where your head would be when you’re seated in the sauna, typically about 36 to 54 inches from the floor.

Avoid mounting the thermometer and hygrometer too close to the sauna heater or near the ceiling, as these locations can result in unrepresentative and exaggerated readings due to the concentrated heat. Similarly, don’t place them too close to the floor where the temperature is considerably cooler.

Keep in mind that the sauna heater tends to produce heat waves that rise to the sauna’s ceiling. It’s recommended to mount the thermometer and hygrometer on a wall that’s opposite the sauna heater. This will help the instruments capture a more general and representative temperature and humidity reading of the entire sauna.

How Hot Is Too Hot?

When it comes to sauna temperatures, the “sweet spot” can differ from person to person. The key is to find a balance between a heat level that allows you to reap the numerous health benefits of sauna sessions, and one that ensures your comfort and safety. Experimentation is a part of the journey towards identifying your ideal sauna temperature range. Begin with lower temperatures and gradually increase to higher temperatures over successive sessions to see what your body comfortably tolerates.

However, always remember to listen to your body. If you start feeling lightheaded, dizzy, or experience rapid heartbeat, it’s a clear signal that the heat level is too high for you. Do not push yourself to endure uncomfortable levels of heat for the sake of achieving a “deeper sweat.” The sauna experience is meant to be rejuvenating and relaxing, not a test of endurance.

Staying hydrated is another critical factor in ensuring a safe and healthy sauna experience. Drink ample amounts of water before, during, and after your session to replenish lost fluids from sweating. Avoid alcohol as it can lead to dehydration and exacerbate the effects of the heat.

Lastly, always take all necessary precautions when raising your core body temperature. If you have any underlying health conditions, especially heart-related or high blood pressure, consult your physician before using a sauna. The goal is to enhance your well-being, not compromise it. We do not recommend sauna temperatures exceeding 212 °F.

Sauna Therapy Safety Tips

  • Stay Hydrated: The intense heat in saunas causes your body to sweat profusely, leading to fluid loss. Make sure to drink plenty of water before, during, and after your hot sauna session to replenish these lost fluids.
  • Listen to Your Body: If you experience lightheadedness, dizziness, or a rapid heartbeat, exit the sauna immediately. These symptoms could signal that the heat level is too high for your body to handle.
  • Start Slowly: If you’re new to saunas, begin with shorter sessions at lower temperatures. Gradually increase both as your body acclimatizes to the heat.
  • Avoid Alcohol: Alcohol can lead to dehydration and enhance the effects of the heat. This combination can be dangerous, so it’s best to avoid consuming alcohol before or during your sauna session.
  • Cool Down Gradually: After your sauna session, allow your body to cool down slowly instead of stepping directly into a cold environment. This sudden change in temperature can be a shock to your system.
  • Consult Your Doctor: If you have any underlying health conditions, especially those that affect the heart or blood pressure, consult with a healthcare professional before using a sauna. Sauna therapy should enhance your well-being, not compromise it.

Frequently Asked Questions

Q. What is the ideal sauna temperature and humidity level?

A. The perfect sauna temperature and humidity level largely depend on personal preference. However, the Rule of 200 is a good guideline. This means that the combined temperature (in Fahrenheit) and humidity percentage should not exceed 200. For instance, if the temperature is 180°F, the humidity should not surpass 20%.

Q. How can I accurately measure the temperature and humidity in my sauna?

A. Utilize a thermometer and hygrometer specifically designed for sauna use. Position these instruments away from direct heat and at a height that aligns with your head when seated, typically 36 to 54 inches from the floor, for the most accurate readings.

Q. What do I do if the sauna feels too hot?

A. Always listen to your body. If you feel lightheaded, dizzy, or experience a rapid heartbeat, it’s a sign the heat is too high for you. Begin with lower temperatures and incrementally increase them over time to find your comfort zone. Remember, the sauna is meant to be a relaxing and rejuvenating experience.

Q. What precautions should I take when using a sauna?

A. Stay hydrated by drinking ample water before, during, and after your sauna session. Avoid alcohol as it can lead to dehydration and amplify the heat’s effects. If you have any underlying health conditions, particularly heart-related or high blood pressure, consult your physician prior to using a sauna.

Q. How does sauna temperature affect my health?

A. Sauna sessions at the ideal temperature can offer numerous health benefits, including relaxation, detoxification, improved circulation, and respiratory relief. The heat from the sauna dilates blood vessels, promotes sweating, and helps to relax and ease tension in the body and mind. However, individual tolerance to heat varies, so it’s important to find a balance that suits your comfort and safety.

Remember, the ultimate aim of a sauna is to enhance your well-being. Enjoy the warmth, relish the tranquility, and let the gentle heat nourish your body and soul.


Q. What is the ideal temperature for a traditional sauna?

A. For a traditional sauna, the ideal temperature typically ranges between 160°F to 190°F (71°C to 88°C), depending on personal preference.

Q. What is the ideal temperature for a steam sauna?

A. For a steam sauna, also known as a wet sauna, the ideal temperature usually ranges between 110°F to 120°F (43°C to 49°C), with higher humidity levels.

Q. What is the ideal temperature for an infrared sauna?

A. Infrared saunas operate at lower temperatures compared to traditional saunas. The ideal temperature for an infrared sauna is typically between 120°F to 150°F (49°C to 66°C), allowing the infrared heat to penetrate the body and provide therapeutic benefits.

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