San Marcos Weather in December
December in San Marcos brings pleasant temperatures, with highs of 19°C (66°F) and nights dropping to 7°C (45°F). It's the rainiest month of the year, so come prepared with waterproof gear.
Rainfall in San Marcos in December
With this being the wettest month, keeping an umbrella on hand might save you from getting wet from a sudden shower. You can expect rain on roughly 8 days based on historical data, averaging 79 mm (3.1 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in San Marcos in December
San Marcos in December gets highs of 19°C (66°F) during the day and drops to 7°C (45°F) at night. During December, the winter season is in full swing. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows around 7°C (45°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep. The temperatures this month are cooler, yet they stay comfortably warm and enjoyable.
Sunshine in San Marcos in December
With approximately 231 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.December in San Marcos can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Marcos's climate page.
San Marcos Temperature in December
Min Temperature
7°C (45°F)
Max Temperature
19°C (66°F)
Chance of Rain
27%
Precipitation
79 mm (3.1 in)
Rainy days
8 days
Humidity
64% *
Sunshine
231 hours *
Percentage Sunshine
74% *
Best Places 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. See all of the United States of America in December →
perfect weather
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What to Wear in San Marcos in December
Comfortable temperatures call for an easy wardrobe in December. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in San Marcos in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Marcos's climate page.
Temperature Rainfall Sunshine Humidity
See the full San Marcos climate overview or explore weather in the United States of America.
