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Half Moon Bay, CA Marine Weather Forecast

Station RTYC1 - 9414523 - Redwood City, CA

December 23, 2025 10:00 pm PST
Location: 37.507N 122.212W
Wind Direction: SE (130°)
Wind Speed: 9.9 knots
Wind Gust: 17.1 knots
Atmospheric Pressure: 29.56 in (1000.9 mb)
Pressure Tendency: -0.04 in (-1.4 mb)
Air Temperature: 63.7°F (17.6°C)
Water Temperature: 57.6°F (14.2°C)


Tonight - 53°F
Dec 24, 2025
25 to 29 mph S
Rain Showers
Rain showers before 1am, then showers and thunderstorms. Cloudy, with a low around 53. South wind 25 to 29 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday - 62°F
Dec 24, 2025
8 to 24 mph SSE
Rain Showers
Rain showers before 4pm, then showers and thunderstorms. Some of the storms could be severe. Mostly cloudy. High near 62, with temperatures falling to around 58 in the afternoon. South southeast wind 8 to 24 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday Night - 52°F
Dec 24, 2025
18 to 24 mph SSE
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could be severe. Cloudy, with a low around 52. South southeast wind 18 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Christmas Day - 58°F
Dec 25, 2025
16 to 22 mph S
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a high near 58. South wind 16 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night - 48°F
Dec 25, 2025
10 to 21 mph S
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a low around 48. South wind 10 to 21 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday - 57°F
Dec 26, 2025
10 to 14 mph S
Rain Showers
Rain showers. Cloudy, with a high near 57. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night - 45°F
Dec 26, 2025
6 to 10 mph S
Showers And Thunderstorms Likely
Rain showers likely before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 45.
Saturday - 57°F
Dec 27, 2025
7 mph NE
Chance Rain Showers
A chance of rain showers before 4pm. Mostly sunny, with a high near 57.
Saturday Night - 39°F
Dec 27, 2025
2 to 6 mph NNE
Mostly Clear
Mostly clear, with a low around 39.
Sunday - 56°F
Dec 28, 2025
2 to 6 mph NE
Sunny
Sunny, with a high near 56.
Sunday Night - 39°F
Dec 28, 2025
6 mph NNE
Mostly Clear
Mostly clear, with a low around 39.
Monday - 58°F
Dec 29, 2025
6 mph NE
Sunny
Sunny, with a high near 58.
Monday Night - 41°F
Dec 29, 2025
6 mph NE
Mostly Clear
Mostly clear, with a low around 41.
Tuesday - 59°F
Dec 30, 2025
6 mph NE
Sunny
Sunny, with a high near 59.

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