San Antonio · SpringMonth summary
San Antonio weather in May
✅ Good
🌡️ Temperature min / max
21°C – 30°C
🌧 Rainy days
47% of days
☀️ Sunshine
11.0h per day on average
🌊 🌊 Season
Spring
⭐ ⭐ Weather score
7.5/10
📅 📅 Best month
October (8.3/10)
Quick decision
Should you visit San Antonio in May?
✅ Good
✅ Yes if: you want shoulder-season value — fewer crowds, 30°C.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: Favourable conditions in May (7.5/10). October scores higher but the gap is small.
By trip type
San Antonio in May by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : 🌿 Shoulder
Local context
What to expect in May
🎯 Peak season — book ahead for best rates. Accommodation prices at their highest Spring marks the start of the good season in San Antonio. Temperatures rise (30°C) and tourists have not yet arrived en masse. With 47% of rainy days, always have indoor alternatives planned. A good balance between weather and crowds, even if October (8.3/10) remains theoretically better.
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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 May, San Antonio averages 30°C, 47% rainy days and 11.0h of sunshine per day. Overall weather score: 7.5/10.
See methodology →
Comparison
May vs October (best month)
The best month is October (score 8.3/10). Difference:
- 🌡️ Max temperature : -1°C
- 🌧 Rainy days : -22%
- ☀️ Sunshine : -0.3h/day
FAQ
FAQ — San Antonio in May
Is May a good time to visit San Antonio?
May is an excellent time to visit San Antonio (score 7.5/10). With 30°C, 11.0h of sunshine and 47% rain, conditions are very favourable.
What to do in San Antonio in May?
With 30°C max and 11.0h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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