Half Moon Bay
California, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Half Moon Bay, CA

A warm and sunny day on a scenic beach in Half Moon Bay, California
A warm and sunny day on a scenic beach in Half Moon Bay, California
January, like December, is another mild winter month in Half Moon Bay, California, with average temperature fluctuating between 43°F (6.1°C) and 58.5°F (14.7°C). 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). Weather in January »
February, the last month of the winter, in Half Moon Bay, is another mild month, with temperature in the range of an average low of 43.5°F (6.4°C) and an average high of 59.4°F (15.2°C). In February, the average high-temperature is practically the same as in January - a still mild 59.4°F (15.2°C). Weather in February »

The first month of the spring, March, is still a mild month in Half Moon Bay, California, with average temperature ranging between max 59.7°F (15.4°C) and min 43.9°F (6.6°C). In March, the average high-temperature is almost the same as in February - a still moderate 59.7°F (15.4°C). Weather in March »

April, like March, is a moderate spring month in Half Moon Bay, California, with temperature in the range of an average high of 60.6°F (15.9°C) and an average low of 44.6°F (7°C). In Half Moon Bay, the average high-temperature in April is practically the same as in March - a still moderate 60.6°F (15.9°C). Weather in April »

May, the last month of the spring, in Half Moon Bay, is a comfortable month, with average temperature varying between 47.5°F (8.6°C) and 61.7°F (16.5°C). In May, the average high-temperature is relatively the same as in April - a comfortable 61.7°F (16.5°C). Weather in May »

The first month of the summer, June, is still a comfortable month in Half Moon Bay, California, with temperature in the range of an average high of 63.3°F (17.4°C) and an average low of 49.8°F (9.9°C). In June, the average high-temperature is essentially the same as in May - a still enjoyable 63.3°F (17.4°C). Weather in June »

July, the same as June, is another enjoyable summer month in Half Moon Bay, California, with average temperature ranging between max 64.2°F (17.9°C) and min 52°F (11.1°C). In Half Moon Bay, the average high-temperature is practically the same as in June - a still comfortable 64.2°F (17.9°C). Weather in July »

August, the last month of the summer, in Half Moon Bay, is also an enjoyable month, with average temperature ranging between max 65.1°F (18.4°C) and min 52.7°F (11.5°C). In Half Moon Bay, the average high-temperature in August is essentially the same as in July - a still enjoyable 65.1°F (18.4°C). Weather in August »

September, the first month of the autumn, in Half Moon Bay, is still a comfortable month, with average temperature ranging between min 51.3°F (10.7°C) and max 66.7°F (19.3°C). With an average high-temperature of 66.7°F (19.3°C) and an average low-temperature of 51.3°F (10.7°C), September is the warmest month. Weather in September »

October, the same as September, is another comfortable autumn month in Half Moon Bay, California, with average temperature varying between 65.8°F (18.8°C) and 48.4°F (9.1°C). In October, the average high-temperature is practically the same as in September - a still comfortable 65.8°F (18.8°C). Weather in October »

November, the last month of the autumn, in Half Moon Bay, is another comfortable month, with average temperature ranging between min 45.3°F (7.4°C) and max 62.8°F (17.1°C). In November, the average high-temperature is practically the same as in October - a still comfortable 62.8°F (17.1°C). Weather in November »

December, the first month of the winter, in Half Moon Bay, is still a mild month, with average temperature ranging between min 43.3°F (6.3°C) and max 58.8°F (14.9°C). In December, the average high-temperature is almost the same as in November - a moderate 58.8°F (14.9°C). Weather in December »

What is the coldest month in Half Moon Bay?

January is the coldest month, 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?

In Half Moon Bay, during the entire year, the rain falls for 87 days and collects up to 26.2" (664.6mm) of precipitation.

What is the wettest month in Half Moon Bay?

January is the month with the most rainfall in Half Moon Bay. Rain falls for 12 days and accumulates 5.1" (130.8mm) of precipitation.

When are the longest days in Half Moon Bay?

The month with the longest days is June, with an average of 14.7h of daylight.

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?

With an average high-temperature of 66.7°F (19.3°C) and an average low-temperature of 51.3°F (10.7°C), September is the warmest month.

What is the month with the shortest days in Half Moon Bay?

December has the shortest days of the year in Half Moon Bay, with an average of 9.6h of daylight.
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).