Updated
Lake Washington
Swimming lake · Seattle, Washington
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Current water conditions
Live data from NOAA buoy TCNW1 (22.7 mi away), as of Aug 20, 8:54 PM UTC. Conditions are for general information only and can change quickly — always judge the water in person and follow posted advisories before swimming.
Weather at Lake Washington
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Frequently asked questions
- Where is Lake Washington?
- Lake Washington is a swimming lake in Seattle, Washington.
- What is the water temperature at Lake Washington?
- As of August 20, 2026, the water temperature at Lake Washington in Seattle, Washington is 57°F (14°C), measured by NOAA buoy TCNW1, 22.7 miles away.
- Can you swim at Lake Washington?
- There is no fixed answer for Lake Washington: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at Lake Washington in Seattle, Washington. Check current water conditions before you go, and follow posted signs and local guidance.
- How is Lake Washington rated?
- Lake Washington in Seattle, Washington has an average visitor rating of 5 out of 5, based on 20 reviews.
Visitor Reviews
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Been here? A quick note helps the next visitor plan their day. Handy things to mention:
Best Times to Visit
- ›Check for boat launch facilities and fees
- ›Obtain required fishing licenses before arrival
- ›Be aware of lake-specific regulations and restrictions
- ›Monitor water quality reports before swimming
Location & Contact
2200-2290 Lake Washington Blvd S, Seattle, WA 98144
Seattle, Washington 98144
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