San Antonio weather in July
July in San Antonio: sweltering, a little rain, with clean air — a good time to visit.
#11 of 12 months in San Antonio · #471 of 604 destinations to visit in July · comfort 61/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
San Antonio climate normals — July
| Daytime high | 36°C / 96°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 25°C / 77°F | |
| Feels like (high) | 39°C / 102°F | |
| Rainfall | 52 mm / 2.1 in | 🌦 some rain |
| Rainy days | 6 days | |
| Humidity | 55% | 🍃 comfortable |
| Dew point | 20°C / 68°F | |
| Sunshine | 12.2 h/day | |
| Daylight | 13.8 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 49 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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San Antonio in July — FAQ
- Is July a good time to visit San Antonio?
- July in San Antonio: sweltering, a little rain, with clean air — a good time to visit. It ranks #11 of 12 months for San Antonio on SeasonMap's comfort score (61/100).
- What is the weather like in San Antonio in July?
- In July, San Antonio averages a daily high of 35.6°C and a low of 24.8°C, with about 52.3 mm of rain over roughly 6.4 rainy days.
- What is the air quality in San Antonio in July?
- San Antonio has a mean US Air Quality Index of about 49 in July.