Backyard Saunas in Minnesota: The Nordic Tradition Meets Modern Wellness
Minnesota's Nordic heritage and cold winters make it the perfect place for a backyard sauna. Explore types, costs, health benefits, and what to know before you build — from a 35-year Twin Cities pool and spa expert.
Why Are Saunas So Popular in Minnesota?
A backyard sauna in Minnesota costs $3,000–$15,000 depending on type, size, and whether it's indoor or outdoor. Minnesota has the highest per-capita sauna ownership in the United States, rooted in the Finnish and Scandinavian heritage of the region. But saunas aren't just cultural — they're practical. When it's 10 below zero in January and your pool is under a foot of snow, a sauna is the one backyard amenity you can still enjoy. I've been selling and installing saunas alongside pools and spas for 35 years, and interest has only grown. The combination of a pool for summer and a sauna for winter gives Twin Cities families year-round outdoor wellness.
Types of Backyard Saunas: Traditional vs. Infrared
Traditional Finnish saunas heat the air to 150–195°F using an electric or wood-burning heater with volcanic rocks, while infrared saunas heat your body directly at a milder 120–150°F. You pour water on the rocks for steam (called löyly in Finnish) — sessions typically last 15–20 minutes. Infrared sessions run longer (30–45 minutes), and many people find the lower air temperature more comfortable. Both types deliver health benefits. In my 35 years selling and installing saunas alongside pools in the Twin Cities, I generally recommend traditional saunas for outdoor Minnesota installations — they handle our temperature extremes better and deliver the authentic experience most Minnesotans want. Some of our customers jump in their pool or roll in the snow between sessions.
Indoor vs. Outdoor: What Works in Minnesota
Outdoor barrel saunas and cabin-style saunas have become extremely popular in the Twin Cities. They're visually striking, don't require giving up interior space, and the contrast between the hot sauna and cold Minnesota air is part of the experience. Cedar barrel saunas start around $4,000–$8,000 for a two-person unit and go up to $12,000–$15,000 for a six-person barrel with a changing room. Cabin-style outdoor saunas offer more space and can be customized. Indoor saunas — either prefab units or custom-built rooms — start around $3,000–$6,000 for a prefab and $8,000–$15,000 for custom. They require electrical work (most need a dedicated 240V circuit) and adequate ventilation. If you already have a pool, adding an outdoor sauna near the pool deck creates a natural flow: sauna, pool, repeat.
Health Benefits: What the Research Shows
Regular sauna use (4–7 sessions per week) is associated with reduced cardiovascular disease risk, improved circulation, reduced muscle and joint pain, better sleep, and stress reduction — backed by extensive Finnish research and a 2024 systematic review confirming significant cardiovascular and immune responses. For Minnesota pool owners, a sauna extends your backyard wellness into the 7 months when the pool is closed. I'm not a doctor, but in my 35 years in the pool and spa business, I can tell you that plenty of our Twin Cities customers swear by their saunas — especially the ones who use them year-round for arthritis, back pain, or the general stiffness that comes with Minnesota winters.
What to Know Before You Build
Permits vary by municipality — most Twin Cities and Western Wisconsin cities require an electrical permit for a sauna heater installation, and some require a building permit for outdoor structures. Check your local zoning for setback requirements from property lines. Cedar is the preferred wood for Minnesota saunas — it's naturally resistant to moisture, insects, and decay. Hemlock and basswood are also common. Avoid pressure-treated lumber inside the sauna (the chemicals vaporize at high temperatures). For electric heaters, plan for a dedicated 240V/30–60 amp circuit. Wood-burning stoves are popular for outdoor saunas but require chimney clearance and may need a fire inspection depending on your city.
Pool + Sauna: The Ultimate Minnesota Backyard
The combination of a pool and sauna is the ultimate Minnesota backyard setup. Swim all summer, sauna all winter, and enjoy both during the shoulder seasons. Some of our customers plunge from the sauna into the pool for a cold dip — the Nordic tradition of hot-cold contrast. We help homeowners plan integrated backyard spaces where the pool, sauna, patio, and landscaping work together as a cohesive design. If you're considering a pool and a sauna, designing them together saves money on site work, electrical runs, and landscaping. Visit our Willernie or Stillwater showroom to see sauna options, or call (651) 653-6807 to discuss your backyard vision.