San Ysidro weather in December (California, United States of America)
Looking to travel to San Ysidro in December? Here's what the weather might have in store during this month.
In December, San Ysidro generally has pleasant temperatures and moderate rainfall. Daytime temperatures hover around 19°C, while nights can cool down to about 8°C. On average, it is the month with the lowest temperatures of the year. However the temperature is still pleasant and it won't ever get really cold.
San Ysidro in December usually receives moderate rainfall, averaging around 58 mm for the month. It is the wettest month of the year, so an umbrella might come in handy. When we look at the climate data from the last 30 years, we can expect around 8 days of rain.
The days are predominantly sunny, with an estimated total of around 248 hours of sunshine. This amount of sunlight does not only brightens the days but also contributes to a cheerful ambiance in the area during this month.
If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit San Ysidro. January, February, March, April, May, June, July, August, September, October and November generally stand out with the best circumstances. While December tends to showcase less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized San Ysidro climate page with graphs.
San Ysidro, monthly averages in December
Min Temperature
8°C
Max Temperature
19°C
Chance of Rain
27%
Precipitation
58 mm
Rainy days
8 days
Humidity
69% *
Sunshine
248 hours *
Percentage Sunshine
81% *
Where to go in the United States of America in December
Find out more about the weather in the United States of America in December and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in San Ysidro in December?
For visitors traveling to San Ysidro, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in December.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in San Ysidro.
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 climate conditions. Find out where to go with our weather planner.
