Friday Harbor Water Temperature

(Today) 2024

8.9°C / 48.1°F

The water will feel cold. All but the most ardent watersports enthusiasts will be thinking of packing up for the winter. If not we'd suggest a thick 5/4mm wetsuit along with some boots and a hood.

*Live data from Friday Harbor, WA: 8.9°C / 48°F

Current weather

10°C / 49°F
(clear sky)
Partly cloudy
Wind
2 mph
Humidity
89%

The measurements for the water temperature in Friday Harbor, Washington are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Friday Harbor water temperature derived from many years of historical sea surface temperature data.

Friday Harbor average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Friday Harbor
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 6.7 6.3 6.3 6.8 7.3 7.8 9.8 10.2 10.5 9 8 7.3
Max °C 8.4 8.3 8.9 9 10.4 11.4 11.9 12.9 12.5 12.1 10.4 9.2
Min °F 44.7 44.1 44.4 45.1 46.3 47.5 50.4 51.4 51.7 49.4 47.4 45.9
Max °F 46.4 46.1 47 47.3 49.4 51.1 52.5 54.1 53.7 52.5 49.8 47.8

The warmest water temperature is in August with an average around 52.7°F / 11.5°C. The coldest month is February with an average water temperature of 45.1°F / 7.3°C.

7 day tide forecast for Friday Harbor

SatSunMonTueWedThuFri
  • Low 1:56am
    (0.26m)
  • High 10:16am
    (2.71m)
  • Low 6:18pm
    (1.43m)
  • High 7:52pm
    (1.44m)
  • Low 2:34am
    (0.62m)
  • High 10:42am
    (2.62m)
  • Low 6:30pm
    (1.12m)
  • High 10:32pm
    (1.3m)
  • Low 3:11am
    (1m)
  • High 11:03am
    (2.51m)
  • Low 6:51pm
    (0.8m)
  • High 1:26am
    (1.43m)
  • Low 3:49am
    (1.38m)
  • High 11:19am
    (2.43m)
  • Low 7:15pm
    (0.49m)
  • High 3:47am
    (1.74m)
  • Low 4:44am
    (1.74m)
  • High 11:30am
    (2.37m)
  • Low 7:40pm
    (0.21m)
  • High 4:41am
    (2.05m)
  • Low 6:26am
    (2.03m)
  • High 11:36am
    (2.34m)
  • Low 8:08pm
    (-0.02m)
  • High 5:15am
    (2.29m)
  • Low 7:59am
    (2.22m)
  • High 11:42am
    (2.34m)
  • Low 8:38pm
    (-0.22m)
7 day tide times for Friday Harbor

*These tide times are estimates based on the nearest accurate location (Friday Harbor, San Juan Island, Washington) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.