Friday Harbor Water Temperature

Friday Harbor is a village close to Salish Sea. August is the month with the highest water temperature at 54.7°F / 12.6°C.
The coldest month is February with an average water temperature of 45.7°F / 7.6°C.
February is the driest at 0in / 0mm and March the wettest month with 1.6in / 41.8mm.
With an average air temperature of 60.1°F / 15.6°C, August is the warmest month in a year. December is the coldest with 41.9°F / 5.5°C average air temperature.
The Climate is described as temperate climate with warm and dry summer. Best time to Visit would be in June, July, August, September.

Friday Harbor Summary

Description Value
Current water temperature /
Warmest Month Water Temperature: August with 54.7°F / 12.6°C
Coldest Month Water Temperature: February with 45.7°F / 7.6°C
Warmest Month Air Temperature: August with 60.1°F / 15.6°C
Coldest Month Air Temperature: December with 41.9°F / 5.5°C
Wettest Month: March with 1.6in / 41.8mm
Driest Month: February with 0in / 0mm
Highest Humidity October with 82.4%
Lowest Humidity February with 77.2%
Best Time to Visit: June, July, August, September
Climate Classification temperate climate with warm and dry summer

Friday Harbor 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 45.7

February

45.9 45.7 45.7

March

46.8 46.2 45.9

April

48.6 47.5 46.8

May

50.7 49.8 48.6

June

53.2 52 50.7

July

54.7 54 53.1

August

55 54.7 53.8

September

54.5 53.2 52

October

52 50.7 49.6

November

49.6 48.6 47.5

December

47.5 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 7.6

February

7.7 7.6 7.6

March

8.2 7.9 7.7

April

9.2 8.6 8.2

May

10.4 9.9 9.2

June

11.8 11.1 10.4

July

12.6 12.2 11.7

August

12.8 12.6 12.1

September

12.5 11.8 11.1

October

11.1 10.4 9.8

November

9.8 9.2 8.6

December

8.6 8.3 7.9
August is the month with the highest water temperature at 54.7°F / 12.6°C. The month with the lowest is February with an average water temperature of 45.7°F / 7.6°C.

Friday Harbor weather today & 14-day weather forecast

Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Jun. 27
Few clouds
83 °F
59°F
28 °C
15°C
1mph (2km/h)
southwest
0in (0mm)
0 %
61%
Jun. 28
Broken clouds
65 °F
54°F
19 °C
12°C
2mph (3km/h)
south
0in (1mm)
40 %
82%
Jun. 29
Moderate rain
59 °F
52°F
15 °C
11°C
1mph (2km/h)
south
1in (13mm)
85 %
92%
Jun. 30
Few clouds
65 °F
53°F
18 °C
12°C
1mph (2km/h)
west-southwest
0in (0mm)
0 %
83%
Jul. 01
Few clouds
63 °F
53°F
17 °C
12°C
2mph (4km/h)
southwest
0in (0mm)
0 %
85%
Jul. 02
Scattered clouds
62 °F
52°F
17 °C
11°C
3mph (5km/h)
southwest
0in (0mm)
0 %
86%
Jul. 03
Overcast clouds
61 °F
53°F
16 °C
12°C
3mph (5km/h)
south-southwest
0in (0mm)
15 %
87%
Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Jul. 04
Moderate rain
56 °F
54°F
14 °C
12°C
2mph (4km/h)
south-southeast
1in (13mm)
85 %
95%
Jul. 05
Light shower rain
61 °F
53°F
16 °C
12°C
1mph (2km/h)
south-southwest
0in (2mm)
55 %
86%
Jul. 06
Broken clouds
65 °F
54°F
19 °C
12°C
1mph (2km/h)
west-northwest
0in (0mm)
20 %
80%
Jul. 07
Moderate rain
59 °F
54°F
15 °C
12°C
3mph (5km/h)
southwest
0in (11mm)
85 %
85%
Jul. 08
Few clouds
63 °F
52°F
17 °C
11°C
3mph (5km/h)
southwest
0in (0mm)
0 %
81%
Jul. 09
Few clouds
62 °F
52°F
17 °C
11°C
2mph (3km/h)
southwest
0in (0mm)
0 %
83%
Jul. 10
Clear Sky
64 °F
53°F
18 °C
11°C
4mph (6km/h)
southwest
0in (0mm)
0 %
76%
Jul. 11
Few clouds
62 °F
52°F
17 °C
11°C
3mph (5km/h)
south-southwest
0in (0mm)
0 %
83%
Jul. 12
Few clouds
63 °F
53°F
17 °C
12°C
3mph (5km/h)
southwest
0in (0mm)
0 %
84%

Friday Harbor weather by month / climate table

Max.

Temperature

°F

ø.

Temperature

°F

Min.

Temperature

(°F)

Precip.

(in)

Rainy Days

(d)

Rel. Humidity

(%)

January

45.9 42.1 38.3 0.9 14 81.3%

February

46.8 42.1 37.4 0 7 77.2%

March

50.4 44.4 39.4 1.6 14 78.2%

April

54.3 47.5 41.4 0.6 5 78%

May

58.3 51.8 46.4 0 0 80.2%

June

61.9 55.6 50.9 0.2 0 80.1%

July

65.1 59.4 54.5 0 0 80.2%

August

65.7 60.1 55.6 0 0 80.9%

September

63.5 57.4 52.2 0 0 82.2%

October

57.4 51.6 46.6 0.6 0 82.4%

November

51.4 45.9 38.8 0.3 16 80.4%

December

45.9 41.9 38.7 1.6 14 79.4%

Max.

Temperature

°C

ø.

Temperature

°C

Min.

Temperature

(°C)

Precip.

(mm)

Rainy Days

(d)

Rel. Humidity

(%)

January

7.7 5.6 3.5 22.3 14 81.3%

February

8.2 5.6 3 0 7 77.2%

March

10.2 6.9 4.1 41.8 14 78.2%

April

12.4 8.6 5.2 14.9 5 78%

May

14.6 11 8 0 0 80.2%

June

16.6 13.1 10.5 5.6 0 80.1%

July

18.4 15.2 12.5 0 0 80.2%

August

18.7 15.6 13.1 0 0 80.9%

September

17.5 14.1 11.2 0 0 82.2%

October

14.1 10.9 8.1 15.6 0 82.4%

November

10.8 7.7 3.8 7.6 16 80.4%

December

7.7 5.5 3.7 40.4 14 79.4%
February is the month with the lowest rain of 0in / 0mm and March with the highest precipitation in a year with 1.6in / 41.8mm. The avg. temperature is around 60.1°F / 15.6°C, August is the month with the highest temperature. December is the coolest with 41.9°F / 5.5°C average temperature.

Activities & POI in Friday Harbor

Type of Activity List
Beach South Beach, Jackson Beach, Kimple Beach, Fourth of July Beach, Nawalagwis (Magic Beach), Cottonwood Cove, Haida Canoe Cove, Madrona Beach, The Landing
Marina for Sailing, Boat adventures, fishing Roche Harbor, Deer Harbor Boatworks, Port of Friday Harbor, Shipyard cove, Westsound Marina, Cayou Quay Marina, Deer Harbor Marina
Attraction American Camp, Land Bank, Western Prince Whale Watching, Historic blockhouse, Historic hospital, John S. McMillan Memorial Mausoleum, Crystal Seas Kayaking, Orca Survey Outreach & Education Center, Krystal Acres Alpaca Farm
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