San Antonio · WinterMonth summary
San Antonio weather in December
✅ Good
🌡️ Temperature min / max
9°C – 20°C
🌧 Rainy days
25% of days
☀️ Sunshine
7.8h per day on average
🌊 🌊 Season
Winter
⭐ ⭐ Weather score
7.3/10
📅 📅 Best month
October (8.3/10)
Quick decision
Should you visit San Antonio in December?
✅ Good
✅ Yes if: you want to explore the city on foot without suffering from heat.
❌ No if: you're looking for a beach destination — water and air are still cool.
Our take: December is a good time to visit San Antonio. October remains slightly better (+1.0 pts).
By trip type
San Antonio in December by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in December
🎯 Shoulder season — good value with reasonable accommodation prices Even in winter, San Antonio enjoys 20°C. A real asset for escaping the European cold. Rain risk remains low (25% of days), leaving good room for outdoor activities. Not the best window, but acceptable if dates are constrained. October (8.3/10) is significantly better if possible.
Browse by month
All months for San Antonio
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 6°C | 18°C | 25% | 1.7 | 9.7h | 7.2/10 |
| 🌤️ February | 9°C | 21°C | 26% | 2.0 | 8.1h | 7.4/10 |
| 🌤️ March | 14°C | 26°C | 32% | 2.0 | 8.8h | 7.8/10 |
| 🌤️ April | 17°C | 28°C | 37% | 3.3 | 10.0h | 8.0/10 |
| 🌤️ May | 21°C | 30°C | 47% | 5.3 | 11.0h | 7.5/10 |
| 🌤️ June | 24°C | 34°C | 36% | 2.5 | 12.4h | 7.2/10 |
| 🥵 July | 25°C | 36°C | 25% | 2.7 | 12.9h | 6.9/10 |
| 🥵 August | 25°C | 36°C | 26% | 2.6 | 12.6h | 6.9/10 |
| 🌤️ September | 23°C | 33°C | 32% | 3.4 | 11.2h | 7.3/10 |
| 🌤️ October | 19°C | 29°C | 25% | 2.5 | 10.7h | 8.3/10 |
| 🌤️ November | 13°C | 24°C | 29% | 2.1 | 8.4h | 7.7/10 |
| 🌤️ December | 9°C | 20°C | 25% | 1.9 | 7.8h | 7.3/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In December, San Antonio averages 20°C, 25% rainy days and 7.8h of sunshine per day. Overall weather score: 7.3/10.
See methodology →
Comparison
December vs October (best month)
The best month is October (score 8.3/10). Difference:
- 🌡️ Max temperature : +9°C
- 🌧 Rainy days : +0%
- ☀️ Sunshine : +2.9h/day
FAQ
FAQ — San Antonio in December
Is December a good time to visit San Antonio?
December is an acceptable time for San Antonio (score 7.3/10). Conditions are decent but not optimal — consider October (8.3/10) if possible.
What to do in San Antonio in December?
With 20°C max and 7.8h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities and tours in San Antonio
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