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The weather in December is noticeably cooler than the previous month. December has average maximum temperatures of 14°C (58°F) which is a little too chilly for sunbathing. The sunshine percentage is 54% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 5.2 hours of sunshine per day. It is not a good time for sunbathing in San Mateo County.
December has total rainfall of 7.2cm (2.8inches) making it mostly dry with only intermittent light showers. There are only 13.6 days with some rainfall so you can still enjoy the beach on the majority of days.
Sea temperatures are a cold 15°C (59°F). December is too cold for swimming in San Mateo County for any length of time, unless you have a wetsuit. The sea temperature in December is slightly cooler than the previous month.
Consider visiting San Mateo County in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for December.
No, December is not a good time for sunbathing in San Mateo County.
December has average maximum temperatures of 14°C (58°F) which is a little too chilly for sunbathing. The sunshine percentage is 54% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 5.2 hours of sunshine per day. December has total rainfall of 7.2cm (2.8inches) making it mostly dry with only intermittent light showers. There are only 13.6 days with some rainfall so you can still enjoy the beach on the majority of days.
More about December temperature and sunshine.
No, December is too cold for swimming in San Mateo County for any length of time, with the sea water at 15°C (59°F), unless you have a wetsuit.
More about December sea temperatures.
No, December is not a good time for a holiday in San Mateo County.
December has average maximum temperatures of 14°C (58°F) which is a little too chilly for sunbathing. The sunshine percentage is 54% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 5.2 hours of sunshine per day. December has total rainfall of 7.2cm (2.8inches) making it mostly dry with only intermittent light showers. There are only 13.6 days with some rainfall so you can still enjoy the beach on the majority of days. It is not a good time for sunbathing in San Mateo County. Sea temperatures are a cold 15°C (59°F). December is too cold for swimming in San Mateo County for any length of time, unless you have a wetsuit.
More about the December temperatures and sunshine.
No, San Mateo County is a little too chilly for sunbathing in December.
The average maximum temperature in San Mateo County in December is 14°C (58°F). The average maximum temperature is 17°C (62°) in the previous month and 15°C (59°F) in the next month.
The average temperature in San Mateo County in December is 10°C (50°F). The average temperature is 12°C (54°F) in the previous month and 10°C (51°F) in the next month.
More info about the December temperatures and sunshine.
The average day light hours per day in San Mateo County in December are 9.6. The sunshine percentage is 54% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 5.2 hours of sunshine per day.
More about December sunshine.
The weather in December is noticeably cooler than the previous month. The average maximum temperature in San Mateo County in December is 14°C (58°F). The average maximum temperature is 17°C (62°F) in the previous month and 15°C (59°F) in the next month.
The average temperature in San Mateo County in December is 10°C (50°F). The average temperature is 12°C (54°F) in the previous month and 10°C (51°F) in the next month.
The average minimum temperature in San Mateo County in December is 6°C (43°F). The minimum temperature is 8°C (46°F) in the previous month and 6°C (42°F) in the next month.
The days in December are slightly shorter than the previous month. December has fewer hours of sunshine than the previous month. During December the average day light hours are 9.6 per day in San Mateo County. The sunshine percentage is 54% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 5.2 hours of sunshine per day.
The ultraviolet index in San Mateo County in December is typically 2.3 during December. An ultraviolet index reading of 0 to 2 indicates low danger from the sun's UV rays for the average person. Most people will be able to spend several hours in the sun with out a problem, however unprotected skin risks burning in less than 1 hour. Wear sunglasses on bright days. Only those that burn easily will need to apply sunscreen. Watch out for relections from water that may increase ultraviolet exposure.
The average sea water temperature in San Mateo County in December is 15°C (59°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea. The sea temperature in December is slightly cooler than the previous month.
December weather is slightly wetter than the previous month. December has more days of rain than the previous month. The average total rainfall in San Mateo County in December is 7.2cm (2.8inches) and on average there are 13.6 rainy days in December making it a pretty wet time to visit the beach.
The maximum dew point (an indicator of humidity) in San Mateo County in December is 9°C (49°F) which is a bit dry for some. The dew point is 12°C (53°F) in the previous month and 9°C (9°F) in the next month.
The average maximum relative humidity in San Mateo County in December is typically 93.6%. The maximum relative humidity is 96.6% in the previous month and 93.3% in the next month.
The average relative humidity in San Mateo County in December is typically 78%. The average relative humidity is 81.4% in the previous month and 76.6% in the next month.
The average maximum wind speed in San Mateo County in December is typically 27KM/H (17MPH). The average maximum wind speed is 25KM/H (15MPH) in the previous month and 26KM/H (16MPH) in the next month.
The average wind speed in San Mateo County in December is typically 11KM/H (7MPH). The average wind speed is 9KM/H (6MPH) in the previous month and 9KM/H (6MPH) in the next month.
The average wind direction in San Mateo County in December is from the North.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
