How Hot Should a Sauna Be? A Guide for All Ages & Sauna Types
Sauna temperature is one of the most practical decisions in any session — and the right answer depends entirely on the type of sauna you’re using. A traditional Finnish sauna runs at 150–195°F. An infrared sauna runs at 110–140°F. A steam room sits lower still, but feels hotter because of humidity. Each has a different use case, and each suits a different type of user. This guide breaks down the ideal temperature ranges by sauna type and experience level so you know exactly where to start and how to adjust from there.
Read our guide on Using a sauna before or after exercise.
Why Sauna Temperature Matters
The temperature inside a sauna can greatly affect your experience. Too hot, and you risk dehydration or dizziness. Too mild, and you may not get the full therapeutic effects. Knowing how hot a sauna should be—and adjusting based on your body and sauna type—is essential.
How Hot is a Sauna? Ideal Temperature Ranges by Type
1. Traditional Finnish Sauna
- Temperature: 150°F – 195°F (65°C – 90°C)
- Humidity: Low (5%–15%), but can increase with water poured on rocks
- Best for: Experienced sauna users seeking intense heat and deep sweating
Traditional dry saunas operate at higher temperatures with low humidity. This intense heat can feel invigorating but may be too much for children, older adults, or beginners. If you’re wondering, how hot do saunas get?—Finnish saunas often top the chart.
2. Infrared Sauna
- Temperature: 110°F – 140°F (49°C – 60°C)
- Humidity: Very low
- Best for: Beginners, people with heat sensitivity, and therapeutic use
Infrared saunas use light to heat your body directly rather than warming the surrounding air. This means the ambient temperature stays comfortable — 110–140°F compared to 150–195°F in a traditional sauna — while the tissue-level heat effect is comparable. Sessions are more accessible for daily use, and most users find they can sustain longer sessions at lower temperatures without the intensity barrier of traditional heat.
For home use specifically, the lower warm-up time — 10–15 minutes versus 30–45 for a traditional sauna — and lower energy consumption make infrared the more practical daily-use option for most people. The Aurora Pro 2 operates at 110–140°F and is designed for sessions of 20–40 minutes, making it straightforward to build into a consistent routine.
Want to explore the full benefits? Check out our post on infrared sauna benefits.
3. Steam Room (Steam Sauna)
- Temperature: 110°F – 120°F (43°C – 49°C)
- Humidity: Extremely high (near 100%)
- Best for: Skin hydration, respiratory relief, and people who prefer moist heat
While steam rooms run at lower temperatures, the high humidity makes them feel much hotter. This moist environment is great for opening pores and clearing sinuses but may not be ideal for those with certain respiratory conditions or low heat tolerance.
How Hot Should a Sauna Be for Different People?
Everyone’s body reacts differently to heat, so it’s important to adjust your sauna session based on age, health, and experience level.
Children
- Use lower temperatures (around 100°F – 110°F / 38°C – 43°C)
- Limit sessions to 5–10 minutes
- Always supervise
- Avoid traditional high-heat saunas (1)
Older Adults
- Choose infrared or steam rooms for gentler heat
- Stay hydrated and limit sessions to 10–15 minutes
- If you have any active health conditions, check with your healthcare provider before starting a regular sauna practice
Beginners
- Start at the lower end of the recommended range (e.g., 140°F / 60°C for dry sauna or 120°F / 49°C for infrared)
- Gradually increase time and temperature as your body adapts
- Focus on hydration and cooling down properly afterward
Want a complete strategy? Learn how long to stay in a sauna safely.
Healthy Adults
- You can typically tolerate higher temperatures up to 195°F (90°C)
- Session length: 15–20 minutes max, depending on sauna type
Choose sauna types based on your goals: dry for deep sweat, infrared for muscle relief, steam for skin and sinuses
Not Sure Which Sauna Type Is Right for You?
Download our Infrared Sauna Buyer’s Guide — a quick, science-backed resource to help you choose the right model for your space, goals, and budget.
Humidity: The Missing Piece in Sauna Comfort
Temperature is only half the story. Humidity drastically changes how hot a sauna feels. For example, 120°F in a steam room can feel hotter than 160°F in a dry sauna because your body can’t cool itself through evaporation in humid environments. Here’s how humidity plays a role:
Sauna Type | Humidity Level | Feels Hotter? |
Traditional Dry | 5%–15% | Moderate |
Infrared | <10% | Mild |
Steam | ~100% | Feels Very Hot |
If you’re wondering how hot should a sauna be but find high temperatures uncomfortable, trying a sauna with more humidity (like steam) or lower temps (like infrared) might be better for you.
Safety Tips for All Sauna Users
- Stay hydrated: Always drink water before and after your session.
- Know your limits: Start slow and listen to your body.
- Time it right: Avoid saunas if you’re feeling dizzy, dehydrated, or overheated.
- Cool down gradually: Let your body return to normal before jumping into a cold shower or doing physical activity.
Frequently Asked Questions About Sauna Temperature
How hot is a sauna supposed to be?
It depends on the type. Traditional Finnish saunas run at 150–195°F (65–90°C). Infrared saunas run at 110–140°F (43–60°C). Steam rooms sit at 110–120°F (43–49°C) but feel hotter because of near-100% humidity. For most home users, 120–135°F in an infrared sauna is a comfortable and effective starting range.
Is 200 degrees too hot for a sauna?
It’s at the upper limit of traditional sauna use and would be unusual in most home setups. Professional Finnish saunas can reach 185–195°F, but sessions at that temperature are typically short (10 minutes or less) and are suited to experienced users with good heat tolerance. Infrared saunas never approach those temperatures and don’t need to — tissue heating at 110–140°F produces comparable effects.
What temperature should an infrared sauna be set to?
Most infrared sauna users start between 110–120°F and work up to 130–140°F as heat tolerance builds. The right temperature is the one where you can comfortably sustain 20–30 minutes without feeling rushed to exit. There’s no benefit to pushing the temperature higher — the mechanism is tissue-level heat absorption, not ambient air temperature.
How hot is too hot in a sauna?
Exit the sauna if you feel dizzy, lightheaded, or nauseous at any temperature. For traditional saunas, most safety guidance caps sessions at 195°F and 15–20 minutes. For infrared, sustained sessions above 150°F are unnecessary and outside the normal operating range of most units.
Final Thoughts: How Hot Should a Sauna Be?
So, how hot do saunas get? They can range from 110°F / 43°C to nearly 195°F / 60°C, depending on type and purpose. But the better question is: How hot should a sauna be for you?
There’s no single right answer — the ideal temperature depends on your sauna type, your experience level, and what you want out of the session. Use the ranges in this guide as your starting point, adjust based on how your body responds, and prioritize hydration throughout. The session that you’ll actually show up for consistently is the one that works.
Disclaimer
At Body Wellness Club, we’re committed to providing science-backed insights and clean wellness tools to support your journey toward better health. Our content is intended for informational and educational purposes only and is not a substitute for personalized medical advice, diagnosis, or treatment.
Please consult with a licensed healthcare provider before making any decisions related to your health, supplements, or treatment plans. If you are experiencing a medical condition or emergency, seek professional care immediately.
Body Wellness Club and its contributors are not liable for any outcomes resulting from the use—or misuse—of information on this site. While we aim to keep all content accurate and up to date, we cannot guarantee it is free of errors or omissions.
Your wellness is personal. Make choices that reflect what’s right for you.
Sources
- Deliberate Heat Exposure Protocols for Health & Performance (2022, medicalnewstoday.com)
- Are Saunas Safe for Seniors? (2024, pausestudio.com)
Ready to Take the Guesswork Out of Sauna Shopping?
We created the Infrared Sauna Buyer’s Guide to make choosing a sauna easier — with temperature comparisons, features that matter, and key mistakes to avoid.
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