Half Moon Bay (CA) Climate by Month
Temperatures in Half Moon Bay experience a moderate degree of variance through the seasons.
Days can be warm, while the cooler months tend
to be mild.
It maintains moderate precipitation patterns.
Now, let’s break down all the climate details for a clearer picture.
Average day and night temperature
In Half Moon Bay, seasonal changes bring about a moderate variation in temperatures. Typically, daytime temperatures range from a comfortable 22°C in September to a moderate 15°C in the coolest month, December. Nights are cooler, with temperatures generally dropping to 6°C, particularly during the colder months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Generally, Half Moon Bay receives mid-range precipitation levels, with 625 mm annually. The climate in Half Moon Bay shows significant variation throughout the year. Expect high rainfall in December, with an average of 144 mm of precipitation over 14 rainy days. In contrast, July offers drier and sunnier days, with around 3 mm of rainfall over 5 rainy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
For those who appreciate different seasons, Half Moon Bay serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 10.8 hours of sunshine daily, and embrace the darker days in December, offering only 5.3 hours of daily sunlight.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average water temperature
The mean water temperature over the year in Half Moon Bay ranges from 12°C in January to 14°C in June.
Water temperature over the year
Average humidity
The relative humidity is moderate throughout the year in Half Moon Bay.
Relative humidity over the year
Average wind speed
The mean wind speed over the year in Half Moon Bay ranges from 3°C in January to 7°C in June.
The mean monthly wind speed over the year (meters per second)
The best time of year to visit Half Moon Bay in the United States of America
During the months of June, July, August, September and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
Yes, the months of May, June, July, August and September are very dry.
September has an average maximum temperature of 22°C and is the warmest month of the year.
The coldest month is December with an average maximum temperature of 15°C.
December tops the wettest month list with 144 mm of rainfall.
July is the driest month with 3 mm of precipitation.
May is the sunniest month with an average of 324 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
