Point Forecast: 20NM W San Francisco CA
 37.75N 122.83W (Elev. 0 ft)
Last Update: 2:42 pm PDT Jul 13, 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  

Date07/1307/14
Hour (PDT)212223000102030405060708091011121314151617181920
Surface Wind (kt)322222222222334444444433
Wind DirWSWWSWSWSWSWSWSWWSWWWWSWSWSSWSSWSWSWSWWSWWSWWSWWSWWWW
Gust
Significant Wave Height (ft) 444444444444444444444444
Swell Height (ft) 333333333333333333333333
Swell Dir300300300300300300300300300300300300300300300300300300300300310310310310
Swell Period (sec) 101010101010101010101010101010101010101010101010
Swell 2 Height (ft) 222222222222222222222222
Swell 2 Dir190190190190190190190190180180180180180180190190190190190190200200200200
Swell 2 Period (sec) 151517171717171716161616161616161616161615151515
Wind Wave Height (ft) 000000000000000000000000

Date07/15
Hour (PDT)212223000102030405060708091011121314151617181920
Surface Wind (kt)333334444447778887776665
Wind DirWWSWWSWWSWWSWSWSWSWSSWSSWSSWSSWSSWSSWSSWSSWSSWSSWSSWSSWSWSWSWWSW
Gust
Significant Wave Height (ft) 444444445555555555555555
Swell Height (ft) 333333334444445555554444
Swell Dir310310310310310310310310310310310310310310310310310310310310310310310310
Swell Period (sec) 101010101010101010101010101010101010101010101010
Swell 2 Height (ft) 222222222222222222222222
Swell 2 Dir200200190190190190190190200200200200200200200200200200200200200200200200
Swell 2 Period (sec) 151515151515151515151515151515151515151514141414
Wind Wave Height (ft) 000000001111111111111111

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