Month-by-month travel weather
San Antonio December weather
San Antonio, United States · December
Layers handle the temperature swings
Mostly mild, though wind and rain can change comfort quickly.
December averages at a glance
Average low
around 6–8°C
Average high
around 18–20°C
Average precipitation
around 25–55 mm
Precip days
about 4–6 days
What to wear in December in San Antonio
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • Light jacket + layers
- • Optional rain option
Travel tips for visiting San Antonio in December
- • Holiday plans often mix indoor/outdoor—layers help.
December weather in San Antonio — FAQ
Q. Is December not very cold?
A. Usually mild, but windy evenings can feel chilly.
Explore San Antonio
These pages are connected so you can compare conditions and decide for yourself.