Lake Washington

Lake Washington

Seattle, King County, WA
492.19mi²
26ft
Directions
Lake Information

Situated between Seattle and Bellevue, Lake Washington is the state's second largest lake and the site of numerous Seattle-based activities, from the SeaFair hydroplane races every August to dinner cruises year-round from Argosy Cruises. Seward Park at the south end of the lake features a perimeter path for bicycles and pedestrians that follows the waterfront with sweeping views of the lake, as well as several swimming spots and kayak launches. The University of Washington operates a boat rental facility right on the lake (in Union Bay) where you can rent canoes and rowboats by the hour. On select Sundays from May through September, you can participate in Bicycle Sundays bicycle or walk along Lake Washington Boulevard south of Mount Baker Beach to Seward Parks entrance. If this is your first visit to Seattle, you might want to embark on the Lake Washington Cruise by Argosy. This 1-1/2 hour tour includes live narration pointing out some fascinating history as well as views of Mt. Rainier and homes of some of Seattle's rich and famous.

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Current Conditions

77°F
Feels like 80°F
Clear
Today's High
86°F
Today's Low
58°F

Water Temperature

73°F
Updated: (Jul 14)
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Latest Water Temperature Data: Current water temperature for Lake Washington is 73° Fahrenheit - providing real-time thermal conditions for fishing, swimming, and water recreation planning.

Current Snapshot

Wind5 mph NW (Gust 8 mph)
Pressure
30.03 inHg
Visibility18 mi
Humidity56%
Cloud Cover0%

Forecast: Tuesday, Jul 15

Day 1 of 9

Hourly Insights

7 AM
60°
10 AM
71°
1 PM
82°
4 PM
86°

Temperature

High
86°F
Low
58°F

Precipitation

Chance0%
Amount0.00"
Typeclear

Wind

6 mph
Avg Speed
Gusts up to
20 mph
CalmModerateStrong
Max Speed10 mph

Sun, Moon & UV

Sunrise12:27 PM
Sunset4:01 AM
Moon PhasewaningGibbous
Max UV Index8 (Very High)

Weather Forecast & Fishing Conditions at Lake Washington

Today's weather at Lake Washington features partly cloudy skies with temperatures ranging from 58°F to 86°F. Wind conditions will average 6 mph with gusts reaching up to 20 mph, creating excellent fishing conditions with calm waters. The UV index will reach 8 (Very High), and there's a 0% chance of precipitation. The current water temperature is 73°F (updated Jul 14), indicating that excellent conditions for bass and trout fishing. These conditions will significantly impact fish behavior and angling success throughout the day.

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July 3rd 2025

Weather Forecast

Tuesday

86°F
58°F

Wednesday

92°F
62°F

Thursday

84°F
59°F

Friday

83°F
60°F

Saturday

75°F
57°F

Sunday

74°F
55°F

Monday

75°F
57°F

Tuesday

76°F
56°F

Wednesday

81°F
58°F
Tuesday - 7/15/2025
86°F
58°F
12am
65°F
73°F
30.04 hPa
2 mph
N
G: 6 mph
2am
63°F
73°F
30.05 hPa
3 mph
SSE
G: 4 mph
4am
60°F
73°F
30.05 hPa
2 mph
ESE
G: 4 mph
6am
58°F
73°F
30.05 hPa
2 mph
SE
G: 3 mph
8am
64°F
73°F
30.07 hPa
3 mph
NW
G: 7 mph
10am
71°F
73°F
30.06 hPa
7 mph
NNW
G: 12 mph
12pm
79°F
73°F
30.03 hPa
8 mph
N
G: 12 mph
2pm
84°F
73°F
29.99 hPa
9 mph
NNW
G: 14 mph
4pm
86°F
73°F
29.96 hPa
10 mph
NNW
G: 16 mph
6pm
84°F
73°F
29.93 hPa
10 mph
N
G: 20 mph
8pm
80°F
73°F
29.93 hPa
7 mph
N
G: 17 mph
10pm
74°F
73°F
29.93 hPa
5 mph
N
G: 13 mph

Water Temperature History

Trends for Lake Washington

Current Temp

73°F

Measured on Jul 14

Latest recorded surface temperature.

Lowest in Period

38°F

On Jan 1

Coldest point in the Last 12 Months.

Average in Period

53°F

Typical temp during the Last 12 Months.

Temperature Trend: Last 12 Months

Surface temperature over the selected period.

Key Observations (Last 12 Months)

  • Warmest avg: July (73°F).
  • Coolest avg: December (41°F).
  • Rapid warming often occurs: May → June (+10°F).
  • Sharpest cooling trend: September → October (-15°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm05101520

Wind Direction

Pressure

1017 mb

Cloud Cover

0%

Visibility

16 miles

Daily Pressure Forecast

TueWedThuFriSatSunMonTueWed0.008.8617.7226.5835.44
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Frequently Asked Questions About Lake Washington

Get accurate, up-to-date information about conditions at Lake Washington.