Monterrey weather in May
May in Monterrey: sweltering, a little rain — a great time to visit.
#8 of 12 months in Monterrey · #364 of 604 destinations to visit in May · comfort 79/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Monterrey climate normals — May
| Daytime high | 31°C / 88°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 21°C / 69°F | |
| Feels like (high) | 34°C / 93°F | |
| Rainfall | 57 mm / 2.3 in | 🌦 some rain |
| Rainy days | 8 days | |
| Humidity | 65% | 💧 humid |
| Dew point | 18°C / 64°F | |
| Sunshine | 11.5 h/day | |
| Daylight | 13.4 h | |
| Wind | 14 km/h / 9 mph | |
| Air quality (US AQI) | 75 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Monterrey?
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Monterrey in May — FAQ
- Is May a good time to visit Monterrey?
- May in Monterrey: sweltering, a little rain — a great time to visit. It ranks #8 of 12 months for Monterrey on SeasonMap's comfort score (79/100).
- What is the weather like in Monterrey in May?
- In May, Monterrey averages a daily high of 31.1°C and a low of 20.7°C, with about 57.4 mm of rain over roughly 8 rainy days.
- What is the air quality in Monterrey in May?
- Monterrey has a mean US Air Quality Index of about 75 in May.