Seattle Water Temperature

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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	/
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

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Seattle water temperature by month

°F

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

°C

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 warmest water temperature at 55.2°F / 12.9°C. The month with the coldest is February with an average water temperature of 45.7°F / 7.6°C.

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Seattle weather today & 14-day weather forecast

7-day weather forecast
+9-day forecast

7-day weather forecast

Date	Weather	Max. F Min. F	Max. C Min. C	Windspeed Windir.	Precip. Rainrisk	Rel. Humidity
Dec. 03	Broken clouds	46 °F 34°F	8 °C 1°C	1mph (1km/h) east-southeast	0in (0mm) 0 %	87%
Dec. 04	Scattered clouds	47 °F 33°F	8 °C 1°C	1mph (1km/h) southeast	0in (0mm) 0 %	82%
Dec. 05	Broken clouds	48 °F 36°F	9 °C 2°C	1mph (2km/h) south-southeast	0in (0mm) 0 %	80%
Dec. 06	Light rain	54 °F 44°F	12 °C 7°C	2mph (3km/h) south-southeast	0in (8mm) 80 %	86%
Dec. 07	Moderate rain	53 °F 47°F	12 °C 8°C	3mph (5km/h) south-southwest	1in (13mm) 85 %	86%
Dec. 08	Light shower rain	47 °F 41°F	8 °C 5°C	1mph (2km/h) south	0in (2mm) 55 %	88%
Dec. 09	Broken clouds	46 °F 38°F	8 °C 3°C	1mph (1km/h) east	0in (1mm) 20 %	83%

+9-day forecast

Date	Weather	Max. F Min. F	Max. C Min. C	Windspeed Windir.	Precip. Rainrisk	Rel. Humidity
Dec. 10	Broken clouds	43 °F 36°F	6 °C 2°C	0mph (1km/h) east-southeast	0in (0mm) 0 %	78%
Dec. 11	Broken clouds	44 °F 35°F	6 °C 2°C	1mph (2km/h) south-southeast	0in (0mm) 0 %	66%
Dec. 12	Overcast clouds	44 °F 42°F	7 °C 6°C	1mph (2km/h) south	0in (0mm) 20 %	83%
Dec. 13	Overcast clouds	45 °F 38°F	7 °C 3°C	1mph (2km/h) north-northeast	0in (0mm) 0 %	83%
Dec. 14	Light rain	47 °F 42°F	8 °C 6°C	2mph (4km/h) south	0in (6mm) 75 %	71%
Dec. 15	Overcast clouds	45 °F 40°F	7 °C 5°C	2mph (3km/h) south-southeast	0in (1mm) 35 %	84%
Dec. 16	Broken clouds	41 °F 37°F	5 °C 3°C	1mph (1km/h) west-southwest	0in (0mm) 20 %	79%
Dec. 17	Overcast clouds	44 °F 37°F	6 °C 3°C	1mph (1km/h) east	0in (1mm) 25 %	72%
Dec. 18	Heavy rain	45 °F 41°F	7 °C 5°C	2mph (3km/h) east	1in (20mm) 90 %	88%

Seattle weather by month / climate table

°F

	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%

°C

	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%

July is the most draught at 0in / 0mm and December the month with the most rain around 2.1in / 54.5mm. The avg. temperature is around 66.7°F / 19.3°C, August is the hottest month in a year. December is the coolest with 39.7°F / 4.3°C avg. temperature.

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

Salish Sea