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

Hazardous Weather Conditions

20NM W San Francisco CA

Marine Point Forecast

[NOTICE]

    • Today

      Today:NW wind 9 to 13 kt. Mostly cloudy, then gradually becoming sunny. Mixed swell...WNW 3 ft at 11 seconds and SSW 2 ft at 13 seconds. Wind waves around 2 ft.

      NW 13kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:NW wind 11 to 13 kt. Partly cloudy. Mixed swell...WNW 5 ft at 7 seconds and SSW 2 ft at 13 seconds. Wind waves around 2 ft.

      NW 13kt
      6ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday

      Monday:NW wind 7 to 10 kt. Mostly sunny. Mixed swell...WNW 4 to 5 ft at 11 seconds and SSW 3 ft at 12 seconds becoming S. Wind waves around 1 ft.

      NW 10kt
      5ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday Night

      Monday Night:NW wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Mixed swell...NNW 5 ft and SSW 1 to 3 ft. Wind waves 1 ft or less.

      NW 9kt⇓
      5ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. Mostly sunny. Mixed swell...NNW 4 to 5 ft and SSW 1 ft. Wind waves 1 ft or less.

      Light Wind
      4-5ft

    • Tuesday Night

      Tuesday Night:WNW wind around 6 kt becoming variable and less than 5 kt after midnight. A slight chance of showers. Mixed swell...WNW 3 ft and SW 2 ft. Wind waves 1 ft or less.

      WNW 6kt⇓
      4ft

    • Wednesday

      Wednesday:Variable winds 5 kt or less. A slight chance of showers. Mixed swell...WNW 3 ft and SSW 2 ft. Wind waves 1 ft or less.

      Light Wind
      3ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. Mostly cloudy. Mixed swell...NW 3 ft and SSW 2 ft. Wind waves 1 ft or less.

      Light Wind
      3ft

    • Thursday

      Thursday:WNW wind around 6 kt. Partly sunny. Mixed swell...WNW 3 ft and SW 2 ft. Wind waves 1 ft or less.

      WNW 6kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 2:34 am PDT Sep 21, 2025
Forecast Valid: 6am PDT Sep 21, 2025-6pm PDT Sep 27, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH

Today
NW wind 9 to 13 kt. Mostly cloudy, then gradually becoming sunny. Mixed swell...WNW 3 ft at 11 seconds and SSW 2 ft at 13 seconds. Wind waves around 2 ft.
Tonight
NW wind 11 to 13 kt. Partly cloudy. Mixed swell...WNW 5 ft at 7 seconds and SSW 2 ft at 13 seconds. Wind waves around 2 ft.
Monday
NW wind 7 to 10 kt. Mostly sunny. Mixed swell...WNW 4 to 5 ft at 11 seconds and SSW 3 ft at 12 seconds becoming S. Wind waves around 1 ft.
Monday Night
NW wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Mixed swell...NNW 5 ft and SSW 1 to 3 ft. Wind waves 1 ft or less.
Tuesday
Variable winds 5 kt or less. Mostly sunny. Mixed swell...NNW 4 to 5 ft and SSW 1 ft. Wind waves 1 ft or less.
Tuesday Night
WNW wind around 6 kt becoming variable and less than 5 kt after midnight. A slight chance of showers. Mixed swell...WNW 3 ft and SW 2 ft. Wind waves 1 ft or less.
Wednesday
Variable winds 5 kt or less. A slight chance of showers. Mixed swell...WNW 3 ft and SSW 2 ft. Wind waves 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. Mostly cloudy. Mixed swell...NW 3 ft and SSW 2 ft. Wind waves 1 ft or less.
Thursday
WNW wind around 6 kt. Partly sunny. Mixed swell...WNW 3 ft and SW 2 ft. Wind waves 1 ft or less.

*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: 2:34 am PDT Sep 21, 2025
Forecast Valid: 6am PDT Sep 21, 2025-6pm PDT Sep 27, 2025
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