San Antonio Weather in December

With daytime temperatures of 18°C (64°F) and nighttime lows of 6°C (43°F), December in San Antonio brings pleasant temperatures during the day. It is also the driest month of the year, with minimal rainfall.

Rainfall in San Antonio in December

This is the driest month of the year. Historically, the month has about 8 days of rain, averaging 34 mm (1.3 in) in total. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in San Antonio in December

Temperatures in San Antonio in December top out at 18°C (64°F) and drop to 6°C (43°F) overnight. During December, the winter season is in full swing. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights fall to 6°C (43°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in San Antonio in December

The city usually sees around 151 hours of sunlight, indicating a moderately sunny period.

If you prefer dry days with pleasant temperatures, February, March, April, October and November typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.