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Typical December weather
San Antonio
Texas · December
65° days
42° nights
about 3 rainy days · 10½ hours of daylight
What to pack
- Sweater
What December feels like
The River Walk lights pull crowds every evening and the barge rides book out well ahead. Freezes come through a few times and the city treats each one as an emergency; otherwise this is a jeans-and-jacket month that lets you walk all day.
Expect about 3 days with real rain — enough to notice, not enough to plan around. The air runs dry — whatever the thermometer says, it wears easy.
The numbers
| Typical high | 65° |
|---|---|
| Typical low | 42° |
| Days with real rain | 3 |
| Total rain | 2.0 in |
| Humidity | dry air |
| Sunrise / sunset (mid-month) | 7:21 am / 5:37 pm |