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

May 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
The last month of the spring, May, is an enjoyable month in Half Moon Bay, California, with temperature in the range of an average low of 47.5°F (8.6°C) and an average high of 61.7°F (16.5°C).

Temperature

In May, the average high-temperature is essentially the same as in April - an enjoyable 61.7°F (16.5°C). In Half Moon Bay, the average low-temperature is 47.5°F (8.6°C).

Rainfall

In May, in Half Moon Bay, the rain falls for 5 days. Throughout May, 0.8" (19.3mm) of precipitation is accumulated. In Half Moon Bay, during the entire year, the rain falls for 87 days and collects up to 26.2" (664.6mm) of precipitation.

Daylight

The average length of the day in May is 14.2h.

What is the temperature in May in Half Moon Bay?

The average high-temperature, in May, in Half Moon Bay, is 61.7°F (16.5°C), while the average low-temperature is 47.5°F (8.6°C).

How many days does it rain in May in Half Moon Bay?

In Half Moon Bay, during May, the rain falls for 5 days and regularly aggregates up to 0.8" (19.3mm) of precipitation.

What is the average length of the day in May in Half Moon Bay?

In Half Moon Bay, the average length of the day in May is 14.2h.
Average temperature in May - Half Moon Bay, CA
  • Average high temperature in May: 61.7°F

The warmest month (with the highest average high temperature) is September (66.8°F).
The month with the lowest average high temperature is January (58.4°F).

  • Average low temperature in May: 47.4°F

The month with the highest average low temperature is August (52.7°F).
The coldest month (with the lowest average low temperature) is January (42.9°F).

Average rainfall in May - Half Moon Bay, CA
  • Average rainfall in May: 0.8"

The wettest month (with the highest rainfall) is January (5.2").
The driest month (with the lowest rainfall) is July (0.1").

Average rainfall days in May - Half Moon Bay, CA
  • Average rainfall days in May: 5 days

The month with the highest number of rainy days is January (12 days).
The month with the lowest number of rainy days is June (3 days).

Average daylight in May - Half Moon Bay, CA
  • Average daylight in May: 14.2h

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