Point Forecast: 20NM W San Francisco CA
 37.75N 122.83W (Elev. 0 ft)
Last Update: 2:32 am PDT Jul 3, 2025
Tabular Forecast
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Weather ElementsWeather/PrecipitationMarine Weather
Temperature (°F)
Dewpoint (°F)
Heat Index (°F)

Surface Wind  
Sky Cover (%)
Precipitation Potential (%)
Relative Humidity (%)
Rain
Thunder
Fog
Swell Period
Swell Hgt/Dir
Swell 2 Period
Swell 2 Hgt/Dir
Wind Wave Height
Significant Wave Height
Freezing Spray

48-Hour Period Starting:       Back 2 Days  

Date07/0307/04
Hour (PDT)111213141516171819202122230001020304050607080910
Surface Wind (kt)151616161719202120202020202021212222201918171717
Wind DirNWNWNWNWWNWWNWWNWWNWWNWWNWNWNWNWNWNWNWNWNWNWNWNWNWNWWNW
Gust20212121222425262525252526282725232222
Significant Wave Height (ft) 888888888888777777666666
Swell Height (ft) 666666666666666666444444
Swell Dir300300300300300300310310310310310310310310310310310310310310310310310310
Swell Period (sec) 999999999999999999888888
Swell 2 Height (ft) 222222222222111111111111
Swell 2 Dir210210210210210210200200200200200200210210210210210210200200200200200200
Swell 2 Period (sec) 181818181818171717171717171717171717171717171717
Wind Wave Height (ft) 333333444444444444333333

Date07/05
Hour (PDT)111213141516171819202122230001020304050607080910
Surface Wind (kt)171717171717171717181818171717161616131313111111
Wind DirWNWWNWWNWWNWWNWWNWWNWWNWWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNWNW
Gust222222232323222222
Significant Wave Height (ft) 555555666666666666555555
Swell Height (ft) 444444555555555555444444
Swell Dir310310310310310310310310310310310310310310310310310310300300300300300300
Swell Period (sec) 888888888888888888888888
Swell 2 Height (ft) 111111222222111111111111
Swell 2 Dir200200200200200200200200200200200200200200200200200200200200200200200200
Swell 2 Period (sec) 161616161616161616161616161616161616151515151515
Wind Wave Height (ft) 333333333333333333333333

Additional Forecasts and Information
International System of UnitsForecast Discussion
Marine Point ForecastHourly Weather Graph
National Marine ForecastsTide Information
River Stage Summary24 Hour Precipitation Summary
NWS Office Map