Weather in San Antonio: December
 |
Average day temperature: | 65.4°F |
| Average night temperature: | 55.4°F | |
 |
Sea water temperature: | 58.1°F |
 |
Number of sunny days: | 28 days |
| Day length: | 14.2 - 14.4 hours | |
 |
Number of rainy days: | 0 days |
| Precipitation totals: | 0.0 in. | |
| more information | ||
forecast
| San Antonio |
temperature
| San Antonio |
Air temperature in December, °F
| Day temperature | Night temperature |
The highest day temperature during December of 2024 was 67°F. At the same time the lowest night temperature was 50°F. Daily and nightly averages during December were 62.9°F and 54.3°F.
Sea water temperature in San Antonio in December, °F
The average sea water temperature in December of 2024 was 59.0°F. The highest and lowest sea temperatures during the month were 61.5°F and 56.1°F.
| Sunny days | |
| Partly cloudy days | |
| Cloudy days |
Almost all days of December in San Antonio are sunny. Cloudy days are rare.
Precipitation total in December, in.
Precipitation total value in San Antonio in December is 0.0 in. Other months of the year show relatively similar values.
The average wind speed value in December is 8.4 mph It makes December one of the most windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 12.9.
Best time for vacation in San Antonio
San Antonio on a weather map
7 mph
5 mph
4 mph
9 mph
8 mph
4 mph
2 mph
1 mph
