Hermosillo weather in October
October in Hermosillo: sweltering, dry, with clean air — a great time to visit.
#7 of 12 months in Hermosillo · #472 of 897 destinations to visit in October · comfort 77/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Hermosillo in October
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Hermosillo climate normals — October
| Daytime high | 34°C / 94°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 20°C / 67°F | |
| Rainfall | 2 mm / 0.1 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 46% | 🍃 comfortable |
| Dew point | 12°C / 54°F | |
| Sunshine | 10.4 h/day | |
| Daylight | 11.5 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 33 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Hermosillo in October — FAQ
- Is October a good time to visit Hermosillo?
- October in Hermosillo: sweltering, dry, with clean air — a great time to visit. It ranks #7 of 12 months for Hermosillo on SeasonMap's comfort score (77/100).
- What is the weather like in Hermosillo in October?
- In October, Hermosillo averages a daily high of 34.4°C and a low of 19.6°C, with about 2.2 mm of rain over roughly 0.8 rainy days.
- What is the air quality in Hermosillo in October?
- Hermosillo has a mean US Air Quality Index of about 33 in October.