Natural swimming hole
Copper Lake, Alpine Lakes Wilderness
Lake · Washington
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 vivid blue alpine lake in the Alpine Lakes Wilderness near Skykomish, reached via the West Fork Foss Lakes trail. The four-mile round trip and 2,200 feet of gain keep it quieter than the marquee Snoqualmie Pass lakes.
Good to know
| Water type | Lake |
|---|---|
| Water temperature | 50-55 in summer |
| Best season | July-August |
| Fees | NW Forest Pass |
| Reservations required | No |
| Hours | daylight hours |
| Parking | West Fork Foss Lakes trailhead |
| County | King County |
| Nearest town | Skykomish |
| Safety notes | no lifeguard; wilderness; very cold water |
Map
Nearby swimming holes
Frequently asked questions
Can you swim in Copper Lake, Alpine Lakes Wilderness?
Yes — Copper Lake, Alpine Lakes Wilderness is listed as a natural swimming spot in Washington. Reported water temperature: 50-55 in summer. Heads-up: no lifeguard; wilderness; very cold water. There are rarely lifeguards at natural swimming holes — verify conditions locally before you go.
Does Copper Lake, Alpine Lakes Wilderness require reservations?
No reservations are required at Copper Lake, Alpine Lakes Wilderness based on current information — but verify before you go.
Is there a fee to visit Copper Lake, Alpine Lakes Wilderness?
Reported fee info: NW Forest Pass. Fees can change — confirm with the official link.
When is the best time to visit Copper Lake, Alpine Lakes Wilderness?
The best season is typically July-August.