Half Moon Bay Weather in March
What's the weather like in Half Moon Bay (California) in March 2025?
The climate in Half Moon Bay during March can be summarized as mild and damp.
March is in the spring in Half Moon Bay and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 16°C (60°F), whilst at night 7°C (44°F) is normal.
| Daytime temperature | 15.7°C 60.2°F |
|---|---|
| Nightly temperature | 6.8°C 44.2°F |
| Average temperature | 11.2°C 52.2°F |
| Daily sunshine | 9.3 hrs |
| Avg rainfall | 107 mm 4.2 ins |
| Rainy days | 11 days |
| Sea temperature | 12.2°C 53.9°F |
| Humidity | 73% |
| Windspeed | 16.9kph 11 mph |
On average March is the 4th wettest month of the year in Half Moon Bay with around 107mm 4.2 inches of rain making it a damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.3 hours of sunshine per day.
March temperatures in Half Moon Bay
March rainfall
March hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Half Moon Bay in March 2025.
Other monthly averages
Half Moon Bay weather stats
| Hottest month: | September | 22.5°C 72.5°F |
|---|---|---|
| Driest month: | July | 2mm 0.1ins |
| Sunniest month: | April | 11hrs |
| Coldest month: | January | 13.4°C 56.1°F |
| Wettest month: | January | 146mm 5.7ins |
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