Sauna Temperature Guide: How Hot Should It Be?

One of the first questions new sauna owners ask is simple: how hot should it be? The answer depends on the type of sauna, because an infrared cabin, a traditional room, and a steam sauna all feel hot at very different air temperatures. This guide gives the typical ranges, a beginner-friendly starting point, and how to dial in a temperature that feels good and safe for you.

Ideal sauna temperatures by type

There is no single correct number, since each sauna type heats your body differently. As a working guide, a traditional Finnish sauna usually runs from about 150 to 195 degrees Fahrenheit, an infrared sauna feels comfortable from roughly 110 to 140 degrees Fahrenheit, and a steam sauna stays cooler at around 110 to 120 degrees Fahrenheit but with near-total humidity that makes it feel intense. Infrared cabins run cooler because the heat warms your body directly rather than heating the air, so a lower reading still produces a deep sweat. Beginners of any type should start at the low end and shorter sessions, then build up as they learn how their body responds. Harvard Health offers a useful overview of saunas and your health if you want the background on how heat affects the body.

Why infrared runs cooler than traditional

The big difference is how the heat reaches you. A traditional sauna heats the air and the rocks, and that hot air warms your skin, so the room must reach a high temperature. An infrared sauna emits radiant heat that your body absorbs directly, raising your core temperature and triggering a sweat at a much lower air temperature. That is why a 130-degree infrared session can feel as productive as a far hotter traditional one, and why many home buyers who want gentler, longer sessions choose infrared. You can compare cabins in our infrared saunas collection.

The best temperature for beginners

If you are new, comfort and safety matter more than chasing a high number. Start an infrared session around 110 to 120 degrees for 10 to 15 minutes, or a traditional sauna at the lower end of its range, and see how you feel. Increase the temperature or time gradually over several sessions. Listen to your body, hydrate before and after, and leave if you feel lightheaded. The goal is a relaxed, sweaty session you can repeat, not the hottest setting you can tolerate.

How long to stay at temperature

Time and temperature work together. At higher heat, sessions are shorter, often 8 to 15 minutes, while gentler infrared heat supports 20 to 40 minute sessions for those who are acclimated. Most people land on 15 to 30 minutes. If you want session-length detail by sauna type and goal, our sauna buying guide covers it alongside sizing and heat type so you can match a unit to the routine you have in mind.

Safety and getting the most from your sauna

Heat is a stress on the body, in a beneficial way for most healthy people, but it deserves respect. Stay hydrated, avoid alcohol, do not use a sauna if you feel unwell, and talk with your doctor first if you are pregnant or have heart or blood pressure conditions. Cooling down afterward, including a cold rinse or a brief cold plunge, is a common way to finish. As an authorized retailer with free US shipping and HSA/FSA-eligible options on qualifying purchases, we can help you choose a sauna that hits your preferred temperature range reliably.

Frequently asked questions

How hot should an infrared sauna be? Most people find 110 to 140 degrees Fahrenheit comfortable and effective, since infrared heat warms the body directly. Start lower and work up as you acclimate.

Is a hotter sauna better? Not necessarily. A comfortable temperature you can use consistently beats an extreme setting you can barely tolerate. Infrared produces a strong sweat at lower air temperatures than traditional.

What temperature is a traditional Finnish sauna? Traditional saunas typically run from about 150 to 195 degrees Fahrenheit, with the option to add water to the rocks for bursts of humidity.