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San Bruno, CA Marine Weather Forecast

Station AAMC1 - 9414750 - Alameda, CA

December 22, 2025 3:48 am PST
Location: 37.772N 122.3W
Wind Direction: ESE (120°)
Wind Speed: 8.9 knots
Wind Gust: 12.1 knots
Atmospheric Pressure: 29.98 in (1015.2 mb)
Water Temperature: 54.7°F (12.6°C)


Overnight - 56°F
Dec 22, 2025
12 mph SSE
Rain
Rain. Cloudy, with a low around 56. South southeast wind around 12 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday - 58°F
Dec 22, 2025
3 to 10 mph SSW
Rain
Rain before 9am, then rain and areas of fog. Cloudy. High near 58, with temperatures falling to around 56 in the afternoon. South southwest wind 3 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night - 54°F
Dec 22, 2025
3 to 7 mph NNW
Light Rain
Rain and areas of fog. Cloudy, with a low around 54. North northwest wind 3 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday - 59°F
Dec 23, 2025
9 to 16 mph SE
Rain
Rain. Cloudy, with a high near 59. Southeast wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night - 51°F
Dec 23, 2025
14 to 24 mph S
Rain
Rain. Cloudy, with a low around 51. South wind 14 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Wednesday - 57°F
Dec 24, 2025
7 to 14 mph SSW
Rain
Rain likely before 10am, then rain and patchy fog. Cloudy, with a high near 57. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night - 52°F
Dec 24, 2025
12 to 25 mph S
Rain
Rain. Cloudy, with a low around 52.
Christmas Day - 54°F
Dec 25, 2025
17 to 25 mph S
Rain then Showers And Thunderstorms
Rain before 4pm, then showers and thunderstorms. Cloudy, with a high near 54.
Thursday Night - 49°F
Dec 25, 2025
13 to 18 mph S
Showers And Thunderstorms
Showers and thunderstorms before 4am, then rain. Cloudy, with a low around 49.
Friday - 54°F
Dec 26, 2025
9 to 13 mph SW
Rain
Rain. Mostly cloudy, with a high near 54.
Friday Night - 44°F
Dec 26, 2025
2 to 9 mph NNW
Chance Light Rain
A chance of rain before 4am, then patchy fog and a slight chance of rain. Mostly cloudy, with a low around 44.
Saturday - 53°F
Dec 27, 2025
5 mph NNE
Areas Of Fog
Areas of fog and a slight chance of rain before 4pm. Mostly sunny, with a high near 53.
Saturday Night - 42°F
Dec 27, 2025
5 mph NNE
Partly Cloudy then Patchy Fog
Patchy fog after 3am. Partly cloudy, with a low around 42.
Sunday - 52°F
Dec 28, 2025
5 mph NE
Patchy Fog then Partly Sunny
Patchy fog before 11am. Partly sunny, with a high near 52.

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