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

20NM W San Francisco CA

Marine Point Forecast

[NOTICE]

    • Monday

      Monday:ENE wind 10 to 13 kt. Sunny. Mixed swell...NNE 2 to 3 ft at 8 seconds and S 1 ft at 13 seconds becoming SW. Wind waves around 2 ft.

      ENE 13kt
      3ft

    • Monday Night

      Monday Night:NE wind around 8 kt. Mostly clear. N swell 2 to 3 ft at 7 seconds. Wind waves around 1 ft.

      NE 8kt
      3ft

    • Tuesday

      Tuesday:ENE wind 13 to 15 kt. Mostly sunny. Mixed swell...NW 3 ft at 13 seconds and SSW 1 ft at 3 seconds decreasing to at 0 seconds . Wind waves around 2 ft.

      ENE 15kt
      3ft

    • Tuesday Night

      Tuesday Night:ENE wind around 9 kt. A slight chance of rain after 4am. Mixed swell...WNW 3 ft and SSW 1 ft. Wind waves around 1 ft.

      ENE 9kt
      3-4ft

    • Wednesday

      Wednesday:ENE wind around 11 kt. Rain likely, mainly after 4pm. Mixed swell...WNW 3 ft and SSW 1 ft. Wind waves 1 to 2 ft.

      ENE 11kt
      3-4ft

    • Wednesday Night

      Wednesday Night:E wind 8 to 10 kt. Rain likely. Mixed swell...W 3 ft and S 2 ft becoming SW. Wind waves around 1 ft.

      E 10kt
      3-4ft

    • New Year's Day

      New Year's Day:E wind around 13 kt becoming SSE in the afternoon. Rain likely. Mixed swell...SE 1 ft and S 5 ft. Wind waves around 1 ft.

      E 13kt
      4-5ft

    • Thursday Night

      Thursday Night:SSE wind 10 to 12 kt. Rain. Mixed swell...W 6 ft and SW 2 ft. Wind waves around 1 ft.

      SSE 12kt
      5-6ft

    • Friday

      Friday:SSE wind 15 to 18 kt. Rain likely. Mixed swell...W 1 ft and SSW 6 ft becoming S...becoming N 0 ft. Wind waves around 2 ft.

      SSE 18kt
      5-7ft


Associated Zone Forecast which includes this point

Last Update: 12:27 am PST Dec 29, 2025
Forecast Valid: 3am PST Dec 29, 2025-6pm PST Jan 4, 2026

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Detailed Forecast


Monday
ENE wind 10 to 13 kt. Sunny. Mixed swell...NNE 2 to 3 ft at 8 seconds and S 1 ft at 13 seconds becoming SW. Wind waves around 2 ft.
Monday Night
NE wind around 8 kt. Mostly clear. N swell 2 to 3 ft at 7 seconds. Wind waves around 1 ft.
Tuesday
ENE wind 13 to 15 kt. Mostly sunny. Mixed swell...NW 3 ft at 13 seconds and SSW 1 ft at 3 seconds decreasing to at 0 seconds . Wind waves around 2 ft.
Tuesday Night
ENE wind around 9 kt. A slight chance of rain after 4am. Mixed swell...WNW 3 ft and SSW 1 ft. Wind waves around 1 ft.
Wednesday
ENE wind around 11 kt. Rain likely, mainly after 4pm. Mixed swell...WNW 3 ft and SSW 1 ft. Wind waves 1 to 2 ft.
Wednesday Night
E wind 8 to 10 kt. Rain likely. Mixed swell...W 3 ft and S 2 ft becoming SW. Wind waves around 1 ft.
New Year's Day
E wind around 13 kt becoming SSE in the afternoon. Rain likely. Mixed swell...SE 1 ft and S 5 ft. Wind waves around 1 ft.
Thursday Night
SSE wind 10 to 12 kt. Rain. Mixed swell...W 6 ft and SW 2 ft. Wind waves around 1 ft.
Friday
SSE wind 15 to 18 kt. Rain likely. Mixed swell...W 1 ft and SSW 6 ft becoming S...becoming N 0 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: 12:27 am PST Dec 29, 2025
Forecast Valid: 3am PST Dec 29, 2025-6pm PST Jan 4, 2026
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