Hermosillo weather in December
December in Hermosillo: warm, dry, with clean air — an excellent time to visit.
#3 of 12 months in Hermosillo · #41 of 897 destinations to visit in December · comfort 91/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Hermosillo in December
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Hermosillo climate normals — December
| Daytime high | 25°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 10°C / 51°F | |
| Rainfall | 16 mm / 0.6 in | ☀️ dry |
| Rainy days | 2 days | |
| Humidity | 40% | 🍃 comfortable |
| Dew point | 2°C / 35°F | |
| Sunshine | 8.9 h/day | |
| Daylight | 10.3 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 29 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Hermosillo in December — FAQ
- Is December a good time to visit Hermosillo?
- December in Hermosillo: warm, dry, with clean air — an excellent time to visit. It ranks #3 of 12 months for Hermosillo on SeasonMap's comfort score (91/100).
- What is the weather like in Hermosillo in December?
- In December, Hermosillo averages a daily high of 24.5°C and a low of 10.4°C, with about 16.1 mm of rain over roughly 1.6 rainy days.
- What is the air quality in Hermosillo in December?
- Hermosillo has a mean US Air Quality Index of about 29 in December.