Monterrey weather in December
December in Monterrey: nice, dry, with clean air — one of the best months to visit.
#2 of 12 months in Monterrey · #13 of 604 destinations to visit in December · comfort 92/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Monterrey climate normals — December
| Daytime high | 23°C / 73°F | 😎 nice |
|---|---|---|
| Nighttime low | 12°C / 53°F | |
| Feels like (high) | 22°C / 72°F | |
| Rainfall | 14 mm / 0.5 in | ☀️ dry |
| Rainy days | 3 days | |
| Humidity | 69% | 💧 humid |
| Dew point | 10°C / 49°F | |
| Sunshine | 8.9 h/day | |
| Daylight | 10.6 h | |
| Wind | 11 km/h / 7 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
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 December — FAQ
- Is December a good time to visit Monterrey?
- December in Monterrey: nice, dry, with clean air — one of the best months to visit. It ranks #2 of 12 months for Monterrey on SeasonMap's comfort score (92/100).
- What is the weather like in Monterrey in December?
- In December, Monterrey averages a daily high of 22.6°C and a low of 11.9°C, with about 13.9 mm of rain over roughly 3.2 rainy days.
- What is the air quality in Monterrey in December?
- Monterrey has a mean US Air Quality Index of about 48 in December.