Sea Temperature

Friday Harbor Sea Temperature

(Today) Sep 2018

11.1°C / 52°F

Current weather

9°C / 48°F
(mist)

Partly cloudy
Wind

5 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.

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.

Maximum and minimum monthly sea temperatures in Friday Harbor
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 6.3 6.2 6.2 6.4 6.5 6.9 8.9 10.1 10.5 8.9 7.8 7
Max °C 8.1 8.1 8.4 8.3 9.3 10.2 11.3 12.5 12.1 11.5 9.9 8.6
Min °F 44.1 43.9 44 44.2 44.8 45.7 49 51.1 51.5 49.1 46.8 45.2
Max °F 45.9 45.8 46.2 46.1 47.6 49 51.4 53.5 53.1 51.7 48.9 46.8

7 day tide forecast for Friday Harbor

TueWedThuFriSatSunMon
  • High 05:45am
    (6.04m)
  • Low 11:36am
    (1.77m)
  • High 06:17pm
    (6.78m)
  • Low 12:12am
    (2.01m)
  • High 06:33am
    (6.18m)
  • Low 12:11pm
    (2.28m)
  • High 06:36pm
    (6.80m)
  • Low 12:45am
    (1.39m)
  • High 07:23am
    (6.32m)
  • Low 12:49pm
    (2.89m)
  • High 06:56pm
    (6.80m)
  • Low 01:22am
    (0.83m)
  • High 08:18am
    (6.44m)
  • Low 01:31pm
    (3.57m)
  • High 07:20pm
    (6.76m)
  • Low 02:03am
    (0.36m)
  • High 09:18am
    (6.56m)
  • Low 02:19pm
    (4.28m)
  • High 07:45pm
    (6.67m)
  • Low 02:49am
    (-0.00m)
  • High 10:27am
    (6.66m)
  • Low 03:16pm
    (4.94m)
  • High 08:15pm
    (6.54m)
  • Low 03:41am
    (-0.24m)
  • High 11:45am
    (6.81m)
  • Low 04:33pm
    (5.44m)
  • High 08:52pm
    (6.37m)

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

Average September sea temperatures

  • Max: 12.1°C / 53.8°F
  • Avg: 11.3°C / 52.3°F
  • Min: 10.5°C / 50.9°F
Friday Harbor average sea temperature chart

These average ocean temperatures for Friday Harbor are calculated from several years of archived data.

Map showing location of Friday Harbor (48.534270, -123.017120)

Locations nearby

Variations

Whilst sea temperatures for Friday Harbor are as accurate as current data allows, there may be slight local and regional variations depending on conditions. Time of day and wind direction may have a temporary local effect as can water flows from neraby rivers.

Alternate names for Friday Harbor
FBS

Friday Harbor average sea temperature chart