Natural swimming hole
Warm River
River · Idaho
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
The Warm River's spring-fed pools near Island Park, with constant 50-degree water. The river is small and the setting is forested. A quick, cold dip.
Good to know
| Water type | River |
|---|---|
| Water temperature | ~50 |
| Depth | wading to ~5 ft |
| Best season | June-September |
| Fees | Free |
| Reservations required | No |
| Hours | sunrise-sunset |
| Parking | Roadside pullouts |
| County | Fremont County |
| Nearest town | Island Park |
| Safety notes | No lifeguard; very cold |
Map
Nearby swimming holes
Frequently asked questions
Can you swim in Warm River?
Yes — Warm River is listed as a natural swimming spot in Idaho. Reported water temperature: ~50. Heads-up: No lifeguard; very cold. There are rarely lifeguards at natural swimming holes — verify conditions locally before you go.
Does Warm River require reservations?
No reservations are required at Warm River based on current information — but verify before you go.
Is there a fee to visit Warm River?
Reported fee info: Free. Fees can change — confirm with the official link.
When is the best time to visit Warm River?
The best season is typically June-September.