Lake Washington
Seattle, Washington · on Lake Washington
Verified · 3 independent sources
- WATER
- lake
- ACCESS
- Designated swim area
- FEE
- No fee found
- SEASON
- Best in summer
About Lake Washington
Lake Washington is a large freshwater lake bordering Seattle, Bellevue, Kirkland, and Renton, spanning roughly 22 miles in length with a maximum depth of 214 feet. Seattle Parks and Recreation operates multiple official public swimming beaches along its shoreline, including Madison Park, Magnuson Park, Denny Blaine, and Matthews Beach, several of which have seasonal lifeguards.
Lake Washington sits in the urban core of the Seattle metro area, ringed by neighborhoods and parks rather than wilderness; Mercer Island sits within its southern half and three floating bridges cross the lake. Shoreline parks range from small neighborhood beaches (Denny Blaine) to larger multi-acre facilities like Matthews Beach Park on the lake's west shore near the mouth of Thornton Creek.
Swimming at Lake Washington
Swimming happens at designated, developed beach parks along the lake's shoreline rather than in a single wild swimming hole. At beaches like Matthews Beach, the water is calm and lake-like with an offshore diving platform installed for the summer season, suited to families and casual swimmers rather than open-water distance swimming.
The walk in
No real hike here. The water is a short walk from where you park. Lake Washington swimming happens at developed city park beaches reached directly from streets/park grounds, not via a backcountry trail; no hike-in is required at any of the official Seattle Parks Lake Washington beaches (Mount Baker, Madison Park, Magnuson Park, Denny Blaine, Matthews Beach).
Plan your visit
Bringing kids
OK with supervision
Lake Washington's shoreline beaches have calm, lake-like water (no current, no waterfall) that is generally suited to families, but this specific coordinate falls near the Mount Baker neighborhood, and unlike Seattle's flagship beaches (Matthews Beach, Madison Park, Magnuson Park, Denny Blaine, which Seattle Parks confirms staff with seasonal lifeguards), no source found confirms lifeguards at the nearest beach here (Mount Baker Park Beach). Water deepens quickly away from shore and the lake carries boat/seaplane traffic, so supervision is still recommended.
Restrooms
Yes
Seattle Parks & Recreation lists an active 'Mount Baker Public Restroom' project and a separate 'Mount Baker Park Beach Bathhouse Renovation' project in its current neighborhood projects list, confirming restroom/bathhouse infrastructure exists (or is being added/upgraded) at the Mount Baker Park beach nearest this coordinate; exact current open/closed status during construction was not found.
Water clarity
Mostly clear
Per Wikipedia, Lake Washington's water quality collapsed under mid-20th-century sewage discharge (nicknamed 'Lake Stinko' by a 1963 newspaper) but fully recovered after 1968 effluent diversion; by the recovery era the lake was documented as roughly twice as clear as in 1950, with algal blooms diminishing sharply post-cleanup. No current-season Secchi-depth or algae-advisory data was found for this specific stretch of shoreline, so seasonal variation cannot be confirmed.
On the water
Lake Washington is a large multi-use lake: it hosts two seaplane bases and the annual Seafair unlimited hydroplane races (confirming motorboat/large-craft use is normal on the lake), and Sail Sand Point at Magnuson Park rents sailboats, kayaks, and paddleboards directly off the lake. No specific no-wake-zone or speed-limit rules were found in sources checked this session.
Rentals nearby
Kayaks, paddleboards (SUPs, including group 'Mega SUPs'), and sailboats; walk-up kayak/SUP rental (no reservation) plus reservable sailboat sessions and youth/adult classes
Prices: $45 per 2-hour paddling session ($110 for a 5-session pack); $55 per 2.5-hour sailing/windsurfing session ($195 for 5); annual passes from $90 (youth) to $330 (adult unlimited, sail+paddle) and $500 (family unlimited); 50-75% discounts for students, seniors, military, and people with disabilities
7861 62nd Ave NE, Seattle, WA 98115, at Magnuson Park on Lake Washington -- roughly 7 miles north of this coordinate (Mount Baker area), on the same lake · Summer rental hours: Fri-Mon 1pm-sunset, Sat-Sun 11am-sunset (through Labor Day); office hours Mon-Fri 9am-4pm
Backstory
The lake was heavily polluted by mid-20th-century sewage discharge, nicknamed 'Lake Stinko' by a 1963 newspaper; diversion of treatment plant effluent to Puget Sound in 1968 allowed the lake to fully recover by 1975. Matthews Beach Park's land was a Duwamish Tribe area before being homesteaded by John G. Matthews in the 1880s and incorporated into Seattle Parks in 1951.
Lake Washington: FAQ
Is Lake Washington kid friendly?
Lake Washington's shoreline beaches have calm, lake-like water (no current, no waterfall) that is generally suited to families, but this specific coordinate falls near the Mount Baker neighborhood, and unlike Seattle's flagship beaches (Matthews Beach, Madison Park, Magnuson Park, Denny Blaine, which Seattle Parks confirms staff with seasonal lifeguards), no source found confirms lifeguards at the nearest beach here (Mount Baker Park Beach). Water deepens quickly away from shore and the lake carries boat/seaplane traffic, so supervision is still recommended.
Do I need to hike to reach Lake Washington?
No significant hike is required. The swimming area is close to parking and access.
Where do I park for Lake Washington?
No source found describing a specific parking lot, roadside parking, or fees for the beach nearest this coordinate; not stated so left null rather than assumed.
Can I bring a kayak or paddleboard to Lake Washington?
Lake Washington is a large multi-use lake: it hosts two seaplane bases and the annual Seafair unlimited hydroplane races (confirming motorboat/large-craft use is normal on the lake), and Sail Sand Point at Magnuson Park rents sailboats, kayaks, and paddleboards directly off the lake. No specific no-wake-zone or speed-limit rules were found in sources checked this session.
When is the best time to visit Lake Washington?
Summer, when Seattle Parks stations lifeguards at designated beaches (e.g., Matthews Beach Park).
What water body is Lake Washington on?
Lake Washington is on Lake Washington, a natural lake verified in USGS hydrography data.
