Natural swimming hole
Boulder Hot Springs
Spring · Montana
Community-reported spot. Details below are compiled from public sources and are reported to be accurate — always verify locally before visiting.
About this swimming hole
A historic Boulder-area hot spring hotel with natural pools and mountain views. Boulder's water is therapeutic and the building is landmark. A classic Montana soak.
Good to know
| Water type | Spring |
|---|---|
| Water temperature | ~100-104 |
| Depth | developed outdoor pools |
| Best season | year-round |
| Fees | Soak fee |
| Reservations required | No |
| Hours | daily; check schedule |
| Parking | On-site lot |
| County | Jefferson County |
| Nearest town | Boulder |
| Safety notes | Developed facility |
Map
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Frequently asked questions
Can you swim in Boulder Hot Springs?
Yes — Boulder Hot Springs is listed as a natural swimming spot in Montana. Reported water temperature: ~100-104. Heads-up: Developed facility. There are rarely lifeguards at natural swimming holes — verify conditions locally before you go.
Does Boulder Hot Springs require reservations?
No reservations are required at Boulder Hot Springs based on current information — but verify before you go.
Is there a fee to visit Boulder Hot Springs?
Reported fee info: Soak fee. Fees can change — confirm with the official link.
When is the best time to visit Boulder Hot Springs?
The best season is typically year-round.