Hermosillo weather in May
May in Hermosillo: sweltering, dry, with clean air — fine if you can take 35°C afternoons.
#8 of 12 months in Hermosillo · #657 of 897 destinations to visit in May · comfort 74/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Hermosillo in May
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Hermosillo climate normals — May
| Daytime high | 35°C / 95°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 18°C / 64°F | |
| Rainfall | 1 mm / 0 in | ☀️ dry |
| Rainy days | 0 days | |
| Humidity | 28% | 🌵 dry |
| Dew point | 5°C / 40°F | |
| Sunshine | 12.7 h/day | |
| Daylight | 13.6 h | |
| Wind | 20 km/h / 13 mph | |
| Air quality (US AQI) | 45 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Hermosillo in May — FAQ
- Is May a good time to visit Hermosillo?
- May in Hermosillo: sweltering, dry, with clean air — fine if you can take 35°C afternoons. It ranks #8 of 12 months for Hermosillo on SeasonMap's comfort score (74/100).
- What is the weather like in Hermosillo in May?
- In May, Hermosillo averages a daily high of 35°C and a low of 17.9°C, with about 0.5 mm of rain over roughly 0.2 rainy days.
- What is the air quality in Hermosillo in May?
- Hermosillo has a mean US Air Quality Index of about 45 in May.