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

18NM S San Francisco CA

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:WNW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Cloudy. Mixed swell...WNW 4 ft at 11 seconds and SW 3 ft at 13 seconds building to at 16 seconds . Wind waves around 1 ft.

      WNW 7kt⇓
      4ft

    • Monday

      Monday:WNW wind 5 to 8 kt. Mostly cloudy. Mixed swell...WNW 4 ft at 12 seconds and SSW 3 ft at 16 seconds. Wind waves around 1 ft.

      WNW 8kt
      4ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Patchy fog after 5am. Mixed swell...WNW 4 ft at 11 seconds and SSW 2 to 3 ft at 16 seconds. Wind waves 1 ft or less.

      Light Wind
      3-4ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. A slight chance of rain. Areas of fog before 8am. Mixed swell...WNW 5 ft and SSW 2 ft. Wind waves 1 ft or less.

      Light Wind
      3-4ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. A chance of rain. Patchy fog after 3am. Mixed swell...WNW 5 ft and SSW 2 ft. Wind waves 1 ft or less.

      Light Wind
      4ft

    • Wednesday

      Wednesday:Variable winds 5 kt or less. Rain likely. Patchy fog before 8am. Mixed swell...NW 3 to 4 ft and SSW 2 ft. Wind waves 1 ft or less.

      Light Wind
      3-4ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. A chance of rain. Patchy fog after 9pm. Mixed swell...WNW 3 ft and SSW 2 ft. Wind waves 1 ft or less.

      Light Wind
      3ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming WNW 5 to 8 kt in the afternoon. A slight chance of rain. Patchy fog before 11am. Mixed swell...WNW 2 to 3 ft and S 2 ft. Wind waves 1 ft or less.

      ⇑WNW 8kt
      3ft

    • Thursday Night

      Thursday Night:NW wind 7 to 10 kt. Mostly cloudy. Mixed swell...WNW 3 ft and SW 1 to 2 ft. Wind waves around 1 ft.

      NW 10kt
      3ft


Associated Zone Forecast which includes this point

Last Update: 8:41 pm PDT Oct 18, 2026
Forecast Valid: 9pm PDT Oct 18, 2026-6pm PDT Oct 25, 2026

View Nearby Observations

Detailed Forecast


Tonight
WNW wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Cloudy. Mixed swell...WNW 4 ft at 11 seconds and SW 3 ft at 13 seconds building to at 16 seconds . Wind waves around 1 ft.
Monday
WNW wind 5 to 8 kt. Mostly cloudy. Mixed swell...WNW 4 ft at 12 seconds and SSW 3 ft at 16 seconds. Wind waves around 1 ft.
Monday Night
Variable winds 5 kt or less. Patchy fog after 5am. Mixed swell...WNW 4 ft at 11 seconds and SSW 2 to 3 ft at 16 seconds. Wind waves 1 ft or less.
Tuesday
Variable winds 5 kt or less. A slight chance of rain. Areas of fog before 8am. Mixed swell...WNW 5 ft and SSW 2 ft. Wind waves 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. A chance of rain. Patchy fog after 3am. Mixed swell...WNW 5 ft and SSW 2 ft. Wind waves 1 ft or less.
Wednesday
Variable winds 5 kt or less. Rain likely. Patchy fog before 8am. Mixed swell...NW 3 to 4 ft and SSW 2 ft. Wind waves 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. A chance of rain. Patchy fog after 9pm. Mixed swell...WNW 3 ft and SSW 2 ft. Wind waves 1 ft or less.
Thursday
Variable winds less than 5 kt becoming WNW 5 to 8 kt in the afternoon. A slight chance of rain. Patchy fog before 11am. Mixed swell...WNW 2 to 3 ft and S 2 ft. Wind waves 1 ft or less.
Thursday Night
NW wind 7 to 10 kt. Mostly cloudy. Mixed swell...WNW 3 ft and SW 1 to 2 ft. Wind waves around 1 ft.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 4 to 6 ft at 17 seconds. ACROSS THE BAR...Swell can be more than twice as high across the bar than surrounding waters. Waves are also more prone to break, particularly during strong ebb currents. Maximum ebb current of 1.3 kt at 10:13 PM Sunday and 1.0 kt at 12:35 PM Monday.

*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: 37.47°N 122.45°W
Last Update: 8:41 pm PDT Oct 18, 2026
Forecast Valid: 9pm PDT Oct 18, 2026-6pm PDT Oct 25, 2026
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