Monthly weather forecast and climate
Half Moon Bay, CA

What is the coldest month in Half Moon Bay?

The coldest month is January, with an average high-temperature of 58.5°F (14.7°C) and an average low-temperature of 43°F (6.1°C).

How many days does it rain in Half Moon Bay?

Throughout the year, in Half Moon Bay, there are 87 rainfall days, and 26.2" (664.6mm) of precipitation is accumulated.

What is the rainiest month in Half Moon Bay?

The month with the most rainfall in Half Moon Bay, California, is January when the rain falls for 12 days and typically aggregates up to 5.1" (130.8mm) of precipitation.

What is the driest month in Half Moon Bay?

The month with the least rainfall in Half Moon Bay, California, is July when the rain falls for 4 days and typically collects 0.1" (3mm) of precipitation.

What is the warmest month in Half Moon Bay?

The warmest month in Half Moon Bay, California, is September, with an average high-temperature of 66.7°F (19.3°C) and an average low-temperature of 51.3°F (10.7°C).
Average temperature - Half Moon Bay, CA
Average rainfall - Half Moon Bay, CA
Average rainfall days - Half Moon Bay, CA
Average daylight - Half Moon Bay, CA

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).

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