San Marcos weather in December (California, United States of America)

Wondering what the weather is like in San Marcos during December? Curious if the timing is right for your trip? Our page offers an in-depth look at the monthly weather conditions.

Temperatures

December in San Marcos generally includes pleasant temperatures and moderate rainfall. Enjoy the winter season during this month. Anticipate daytime temperatures around 19°C, while night temperatures can drop to 7°C. Expect the mildest temperatures of the year this month, yet still enjoyably warm.

Precipitation

San Marcos in December usually receives moderate rainfall, averaging around 79 mm for the month. During the wettest month of the year, an umbrella can be your best friend to stay dry. Past climate data indicates that roughly 8 days will see rain.

Average sunshine

Expect a lot of sunshine this month, with about 231 hours of sunny weather. The abundant sunlight creates a lively and bright atmosphere.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit San Marcos. January, February, March, April, May, June, July, August, September, October and November typically offer the most optimal weather. In contrast, December tends to have less optimal conditions.

Need inspiration to choose your next destination? Our innovative weather planner helps you discover the perfect getaway tailored to your ideal climate conditions.

 

San Marcos, monthly averages in December

Min Temperature 7°C  

Max Temperature 19°C  

Chance of Rain 27%  

Precipitation 79 mm  

Rainy days 8 days  

Humidity 64% *  

Sunshine 231 hours *  

Percentage Sunshine 74% *  

Data from: San Diego, the United States of America (47 KM, 29 Miles).

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.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to San Marcos, 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.

Cycling

9/10

Walking

9/10

Camping

4/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in San Marcos.

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.