Hermosillo weather in August
August in Hermosillo: sweltering, a little rain, with clean air — not the time — 39°C afternoons.
#12 of 12 months in Hermosillo · #861 of 897 destinations to visit in August · comfort 42/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Hermosillo in August
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Hermosillo climate normals — August
| Daytime high | 39°C / 101°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 27°C / 81°F | |
| Rainfall | 71 mm / 2.8 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 57% | 🍃 comfortable |
| Dew point | 21°C / 69°F | |
| Sunshine | 11.5 h/day | |
| Daylight | 13.2 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Hermosillo in August — FAQ
- Is August a good time to visit Hermosillo?
- August in Hermosillo: sweltering, a little rain, with clean air — not the time — 39°C afternoons. It ranks #12 of 12 months for Hermosillo on SeasonMap's comfort score (42/100).
- What is the weather like in Hermosillo in August?
- In August, Hermosillo averages a daily high of 38.6°C and a low of 27.3°C, with about 70.8 mm of rain over roughly 10 rainy days.
- What is the air quality in Hermosillo in August?
- Hermosillo has a mean US Air Quality Index of about 39 in August.