San Antonio Weather in December

December in San Antonio typically sees daytime highs of 25°C (77°F) and nighttime lows of 16°C (61°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in San Antonio in December

Climate statistics over the past 30 years suggest around 15 days of rain, with 117 mm (4.6 in) average for the month. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.

Temperature in San Antonio in December

In December, San Antonio sees high temperatures, with highs of 25°C (77°F). Nights drop to around 16°C (61°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 16°C (61°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in San Antonio in December

Expect a lot of sunshine this month, with about 244 hours of sun. These sunny conditions add to the overall experience.

If your ideal day consists of dry skies and pleasant temperatures, January, February, March and April typically offer the best circumstances for San Antonio.