San Mateo weather in December (California, United States of America)
What kind of weather does December bring to San Mateo? Check out our in-depth weather guide for this month.
Temperatures
The month of December in San Mateo typically brings moderate temperatures and moderate rainfall. During the day, temperatures can climb to about 15°C. At night, they may fall to a cooler 6°C. The temperatures in December are often the mildest compared to the rest of the year.
Precipitation
San Mateo in December usually receives moderate rainfall, averaging around 99 mm for the month. Expect frequent showers this month, so make sure to have an umbrella to keep yourself dry. Based on our climate data of the past 30 years, about 13 days of rain are anticipated.Average sunshine
The city usually sees around 160 hours of sunlight, indicating a moderately sunny period.If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit San Mateo. May, June, July, August, September and October typically offer the most agreeable circumstances. On the other hand, January, February and December tend to be characterized by conditions that may not be as optimal.
For an in-depth look at the yearly conditions, visit our specialized San Mateo climate page with graphs.
San Mateo, monthly averages in December
Min Temperature
6°C
Max Temperature
15°C
Water Temperature
13°C *
Chance of Rain
43%
Precipitation
99 mm
Rainy days
13 days
Humidity
78% *
Windspeed
11 km/h *
Sunshine
160 hours *
Percentage Sunshine
54% *
Where to go in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in this month?
Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly. Bring a rain jacket in case it rains during your stay. With a water temperature of around 13°C there is no need to bring your swimwear.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Interested in more climate information?
This site provides you with all the information you need about the climate in San Mateo.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.
