Seattle Water Temperature

Seattle is a city close to Salish Sea. August is the month with the hottest water temperature at 55.2°F / 12.9°C. The coldest month is February with an ø water temperature of 45.7°F / 7.6°C. July is the month with the lowest precipitation of 0in / 0mm and December with the highest precipitation in a year with 2.1in / 54.5mm. The avg. air temperature is around 66.7°F / 19.3°C, August is the month with the highest temperature. December is the coolest with 39.7°F / 4.3°C average air temperature. June, July, August, September would be the best time to visit. temperate climate with warm and dry summer would be the climate here.

Seattle Summary

Description Value
Current water temperature 50 °F / 10 °C
Warmest Month Water Temperature: August with 55.2°F / 12.9°C
Coldest Month Water Temperature: February with 45.7°F / 7.6°C
Warmest Month Air Temperature: August with 66.7°F / 19.3°C
Coldest Month Air Temperature: December with 39.7°F / 4.3°C
Wettest Month: December with 2.1in / 54.5mm
Driest Month: July with 0in / 0mm
Highest Humidity January with 84.8%
Lowest Humidity July with 64.7%
Best Time to Visit: June, July, August, September
Climate Classification temperate climate with warm and dry summer

Seattle water temperature by month

Salish Sea water temperature by month

Max. Water

Temperature (°F)

ø. Water

Temperature (°F)

Min. Water

Temperature (°F)

January

46.2 45.9 45.5

February

46 45.7 45.5

March

46.6 46.2 46

April

48.2 46.9 46.2

May

50 49.1 48.2

June

52.9 50.9 49.5

July

55 54 52.9

August

55.8 55 54.3

September

55.2 54.1 53.4

October

53.1 51.3 50

November

50 48.9 47.8

December

47.8 46.9 46.2

Salish Sea water temperature by month

Max. Water

Temperature (°C)

ø. Water

Temperature (°C)

Min. Water

Temperature (°C)

January

7.9 7.7 7.5

February

7.8 7.6 7.5

March

8.1 7.9 7.8

April

9 8.3 7.9

May

10 9.5 9

June

11.6 10.5 9.7

July

12.8 12.2 11.6

August

13.2 12.8 12.4

September

12.9 12.3 11.9

October

11.7 10.7 10

November

10 9.4 8.8

December

8.8 8.3 7.9
August is the month with the highest water temperature at 55.2°F / 12.9°C. The month with the lowest is February with an average water temperature of 45.7°F / 7.6°C.

Seattle weather today & 14-day weather forecast

Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Jan. 25
Broken clouds
42 °F
39°F
6 °C
4°C
2mph (3km/h)
south-southwest
0in (0mm)
0 %
87%
Jan. 26
Overcast clouds
43 °F
37°F
6 °C
3°C
2mph (4km/h)
southeast
0in (0mm)
0 %
66%
Jan. 27
Broken clouds
45 °F
39°F
7 °C
4°C
1mph (2km/h)
east-southeast
0in (1mm)
40 %
68%
Jan. 28
Snow
38 °F
33°F
3 °C
1°C
1mph (1km/h)
east-northeast
0in (10mm)
95 %
94%
Jan. 29
Overcast clouds
40 °F
31°F
5 °C
-1°C
1mph (1km/h)
southeast
0in (0mm)
0 %
80%
Jan. 30
Light rain
44 °F
35°F
7 °C
2°C
2mph (3km/h)
south-southeast
0in (6mm)
90 %
81%
Jan. 31
Heavy rain
46 °F
38°F
8 °C
3°C
1mph (2km/h)
southeast
1in (24mm)
95 %
87%
Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Feb. 01
Moderate rain
42 °F
39°F
6 °C
4°C
2mph (3km/h)
south-southwest
1in (13mm)
95 %
83%
Feb. 02
Broken clouds
41 °F
33°F
5 °C
1°C
1mph (2km/h)
south-southeast
0in (1mm)
50 %
80%
Feb. 03
Broken clouds
40 °F
31°F
5 °C
-1°C
1mph (1km/h)
south-southeast
0in (0mm)
0 %
74%
Feb. 04
Overcast clouds
40 °F
33°F
4 °C
1°C
1mph (1km/h)
northeast
0in (0mm)
20 %
90%
Feb. 05
Overcast clouds
21 °F
35°F
-6 °C
2°C
3mph (4km/h)
south
0in (2mm)
65 %
80%
Feb. 06
Overcast clouds
21 °F
30°F
-6 °C
-1°C
1mph (1km/h)
east-southeast
0in (1mm)
50 %
71%
Feb. 07
Light snow
33 °F
24°F
1 °C
-4°C
2mph (3km/h)
south
0in (1mm)
75 %
78%
Feb. 08
Light snow
28 °F
17°F
-2 °C
-9°C
2mph (3km/h)
west-southwest
0in (10mm)
95 %
88%
Feb. 09
Light snow
25 °F
15°F
-4 °C
-10°C
1mph (1km/h)
east-northeast
0in (1mm)
75 %
95%

Seattle weather by month / climate table

Max.

Temperature

°F

ø.

Temperature

°F

Min.

Temperature

(°F)

Precip.

(in)

Rainy Days

(d)

Rel. Humidity

(%)

January

48.4 40.3 32.7 0.5 11 84.8%

February

49.1 40.6 33.3 0.2 7 81%

March

55.9 44.1 35.4 0.9 15 79.1%

April

61.9 48.4 37.6 0.3 7 75.9%

May

66.7 54.7 42.6 0.1 0 72.8%

June

73.9 59.9 50.4 0.1 0 69.8%

July

79.7 66 55 0 0 64.7%

August

80.2 66.7 55.9 0 0 65.4%

September

73.9 60.4 50 0 0 73.1%

October

64.2 52.3 42.1 0.1 0 81%

November

54.1 44.6 35.1 0.5 15 83.9%

December

46.4 39.7 34 2.1 12 84.1%

Max.

Temperature

°C

ø.

Temperature

°C

Min.

Temperature

(°C)

Precip.

(mm)

Rainy Days

(d)

Rel. Humidity

(%)

January

9.1 4.6 0.4 12.2 11 84.8%

February

9.5 4.8 0.7 6.1 7 81%

March

13.3 6.7 1.9 21.7 15 79.1%

April

16.6 9.1 3.1 8 7 75.9%

May

19.3 12.6 5.9 3.6 0 72.8%

June

23.3 15.5 10.2 3.5 0 69.8%

July

26.5 18.9 12.8 0 0 64.7%

August

26.8 19.3 13.3 0 0 65.4%

September

23.3 15.8 10 0 0 73.1%

October

17.9 11.3 5.6 2.3 0 81%

November

12.3 7 1.7 12.4 15 83.9%

December

8 4.3 1.1 54.5 12 84.1%
The hottest avg. temperature is around 66.7°F / 19.3°C, August is the month with the highest temperature. December is the coolest with 39.7°F / 4.3°C average temperature. July is the month with the lowest precipitation of 0in / 0mm and December with the maximum precipitation in a year with 2.1in / 54.5mm.

Activities & POI in Seattle

Type of Activity List
Beach Charles Richey Senior Viewpoint, Alki Beach, Bay Street End, West Denny Way Street End, West Thomas Street End, Northwest 57th Street End, 34th Avenue Northwest Street End, 28th Avenue Northwest Street End, 24th Avenue Northwest Street End, East Harrison Street End, West McGraw Street End, 32nd Avenue West Street End, 30th Avenue West Street End, West Raye Street End, West Armour Street End, West Barrett Street End, West Dravus Street End, 47th Avenue West Street End, West Sheridan Street End, 45th Avenue West Street End, West Cramer Street End, 6th Avenue West Street End, South Holgate Street End, Southwest Bronson Way Street End, East Green Lake Beach, 48th Avenue West Street End, West Bertona Street End, Lake Union Park Kayak Launch and Beach, Mount Baker Beach, The Esplanade West, Northwest 60th Street End, South Oregon Street End, 8th Avenue South Street End, Beach Lane West, Fairmount Avenue Southwest Street End
Marina for Sailing, Boat adventures, fishing Leschi Moorage, Leschi Yacht Basin, Elliott Bay Marina, Bell Street Marina, Queen City Yacht Club, Seattle Yacht Club, Lake Union SkyLaunch, Salmon Bay Marina, Harbor Island Marina, Puget Sound Yacht Club, Seattle Marina, Port of Seattle Fishermen's Terminal, Waterfront Activities Center, AGC Marina, Gas Works Park Marina, Dunato's Marina, Boat Street Marina, Lake Union Waterworks, Fremont Tug & Boat Co., Affinity Marina, Nickerson Marina, Ballard Mill Marina, Sagstad Marina, Sea Scout Base Lake Union, Tyee Yacht Club, Canal Marina
Attraction Underground Tour, Seattle Great Wheel, Mystery Coke Machine, Gum Wall, Spooked in Seattle, Fish Ladder Viewing Gallery, Historic Carousel, Sky View Observatory, Public Market Clock, Sanitary Market Building, Three Brick Monoliths, Roll Call, Wings over Washington, Comedy Underground, Smith Tower Observatory, Seattle Escape Games, Seattle Gum Wall, Harry Partch Instrumentarium, Seattle Center, Space Needle, Washington State Convention Center, Central Library, Pioneer Square, Pioneer Square Pergola, Japanese Garden, Ride the Ducks, Lotus, Swiftsure (LV-83), Arthur Foss, Virginia V, Twilight, Starbucks Reserve Roastery and Tasting Room, Bell Harbor Conference Center, Argosy Cruises, MV Skansonia, Hiram M. Chittenden Locks, Duwamish, Discovery, Pike Place Market, The Carousel, Seattle Glassblowing Studio, Argosy Cruises - Lake Union
Golf Course Broadmoor Golf Course, Driving Range, West Seattle Golf Course, Interbay Family Golf Center, Jefferson Park Golf Course, Interbay Family Golf Center Driving Range, University of Washington Golf Driving Range
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