National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

20NM W San Francisco CA

Marine Point Forecast

[NOTICE]

    • Overnight

      Overnight:Variable winds less than 5 kt becoming SSW around 6 kt. Mostly cloudy. Mixed swell...NW 3 ft at 9 seconds and SSW 2 ft at 12 seconds. Wind waves around 1 ft.

      ⇑SSW 6kt
      3ft

    • Thursday

      Thursday:S wind 6 to 11 kt becoming WSW in the afternoon. Rain, mainly before 5pm. Mixed swell...WNW 4 ft at 8 seconds and SSW 1 ft at 11 seconds. Wind waves around 2 ft.

      S 11kt
      4ft

    • Thursday Night

      Thursday Night:NW wind 6 to 8 kt. Mostly cloudy. Mixed swell...WNW 4 ft at 10 seconds and SSW 3 ft at 11 seconds. Wind waves around 1 ft.

      NW 8kt
      5ft

    • Friday

      Friday:WNW wind around 8 kt. Partly sunny. Mixed swell...NNW 4 ft and SSW 2 ft. Wind waves around 1 ft.

      WNW 8kt
      4-5ft

    • Friday Night

      Friday Night:NW wind 9 to 11 kt. Partly cloudy. Mixed swell...WNW 3 ft and S 3 ft. Wind waves 1 to 2 ft.

      NW 11kt
      5ft

    • Saturday

      Saturday:NW wind 6 to 8 kt. Mostly sunny. Mixed swell...NW 3 to 4 ft and SSW 3 ft. Wind waves around 1 ft.

      NW 8kt
      4ft

    • Saturday Night

      Saturday Night:NW wind around 11 kt. Partly cloudy. Mixed swell...NNW 3 ft and S 3 ft. Wind waves around 1 ft.

      NW 11kt
      4ft

    • Sunday

      Sunday:WNW wind around 10 kt. Mostly sunny. Mixed swell...WNW 3 to 4 ft and S 2 ft. Wind waves around 1 ft.

      WNW 10kt
      4ft

    • Sunday Night

      Sunday Night:NW wind 11 to 14 kt. Partly cloudy. Mixed swell...WNW 3 ft and S 2 to 3 ft. Wind waves around 2 ft.

      NW 14kt
      4ft


Associated Zone Forecast which includes this point

Last Update: 11:16 pm PDT Sep 2, 2026
Forecast Valid: 12am PDT Sep 3, 2026-6pm PDT Sep 9, 2026

View Nearby Observations

Detailed Forecast


Overnight
Variable winds less than 5 kt becoming SSW around 6 kt. Mostly cloudy. Mixed swell...NW 3 ft at 9 seconds and SSW 2 ft at 12 seconds. Wind waves around 1 ft.
Thursday
S wind 6 to 11 kt becoming WSW in the afternoon. Rain, mainly before 5pm. Mixed swell...WNW 4 ft at 8 seconds and SSW 1 ft at 11 seconds. Wind waves around 2 ft.
Thursday Night
NW wind 6 to 8 kt. Mostly cloudy. Mixed swell...WNW 4 ft at 10 seconds and SSW 3 ft at 11 seconds. Wind waves around 1 ft.
Friday
WNW wind around 8 kt. Partly sunny. Mixed swell...NNW 4 ft and SSW 2 ft. Wind waves around 1 ft.
Friday Night
NW wind 9 to 11 kt. Partly cloudy. Mixed swell...WNW 3 ft and S 3 ft. Wind waves 1 to 2 ft.
Saturday
NW wind 6 to 8 kt. Mostly sunny. Mixed swell...NW 3 to 4 ft and SSW 3 ft. Wind waves around 1 ft.
Saturday Night
NW wind around 11 kt. Partly cloudy. Mixed swell...NNW 3 ft and S 3 ft. Wind waves around 1 ft.
Sunday
WNW wind around 10 kt. Mostly sunny. Mixed swell...WNW 3 to 4 ft and S 2 ft. Wind waves around 1 ft.
Sunday Night
NW wind 11 to 14 kt. Partly cloudy. Mixed swell...WNW 3 ft and S 2 to 3 ft. Wind waves around 2 ft.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 37.75°N 122.83°W
Last Update: 11:16 pm PDT Sep 2, 2026
Forecast Valid: 12am PDT Sep 3, 2026-6pm PDT Sep 9, 2026
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