Tucson weather in August
August in Tucson: sweltering, a little rain, with clean air — a fair time to visit.
#11 of 12 months in Tucson · #519 of 604 destinations to visit in August · comfort 56/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Tucson climate normals — August
| Daytime high | 37°C / 99°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 25°C / 78°F | |
| Feels like (high) | 38°C / 100°F | |
| Rainfall | 40 mm / 1.6 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 48% | 🍃 comfortable |
| Dew point | 17°C / 62°F | |
| Sunshine | 11.8 h/day | |
| Daylight | 13.3 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 40 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Tucson in August — FAQ
- Is August a good time to visit Tucson?
- August in Tucson: sweltering, a little rain, with clean air — a fair time to visit. It ranks #11 of 12 months for Tucson on SeasonMap's comfort score (56/100).
- What is the weather like in Tucson in August?
- In August, Tucson averages a daily high of 37.2°C and a low of 25.3°C, with about 39.7 mm of rain over roughly 9.6 rainy days.
- What is the air quality in Tucson in August?
- Tucson has a mean US Air Quality Index of about 40 in August.