San Antonio in December
8.7out of 10
Yes, a good time to go
Mild: highs around 20°C. Very dry: about 0 rainy days.
20°CAvg high
12°CAvg low
0Rainy days (3 mm)
14:13 hDaylight
06:36Sunrise · 20:49 Sunset
Why this score
- Mild: highs around 20°C
- Very dry: about 0 rainy days
What to wear and pack
- Layers you can add or remove
- Comfortable walking shoes
How reliable is the forecast?
Rainfall in December is fairly consistent from year to year (0.8 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 21°C | 14°C | 0 mm | 0 | – | – | 8.9 |
| February | 20°C | 13°C | 2 mm | 0 | – | – | 8.8 |
| March | 20°C | 12°C | 3 mm | 1 | – | – | 8.7 |
| April | 18°C | 10°C | 18 mm | 2 | – | – | 8.2 |
| May | 16°C | 9°C | 60 mm | 5 | – | – | 7.5 |
| June | 14°C | 8°C | 122 mm | 7 | – | – | 6.7 |
| July | 13°C | 7°C | 67 mm | 6 | – | – | 7.0 |
| August | 14°C | 7°C | 59 mm | 5 | – | – | 7.1 |
| September | 15°C | 8°C | 28 mm | 3 | – | – | 7.6 |
| October | 17°C | 10°C | 14 mm | 2 | – | – | 8.0 |
| November | 19°C | 11°C | 4 mm | 1 | – | – | 8.4 |
| December | 20°C | 12°C | 3 mm | 0 | – | – | 8.7 |
Frequently asked questions
How hot is San Antonio in December?
Daytime highs average 20°C and nights about 12°C.
When is the best time to visit San Antonio?
The best months are January, February, March, December.