Warm River
River ¡ Idaho
âšī¸ Community-reported spot. Details below are compiled from public sources and are reported to be accurate â 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
Does Warm River require reservations?
No reservations are required at Warm River based on current information â but verify before you go.
Is there a fee to visit Warm River?
Reported fee info: Free. Fees can change â confirm with the official link.
When is the best time to visit Warm River?
The best season is typically June-September.
â ī¸ Verify before you go. Conditions, fees, reservations, and access can change â confirm details with the official link before visiting. Last verified: September 2026