Montevideo weather in December
December in Montevideo: warm, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Montevideo · #34 of 604 destinations to visit in December · comfort 89/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Montevideo climate normals — December
| Daytime high | 24°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 18°C / 65°F | |
| Feels like (high) | 26°C / 79°F | |
| Rainfall | 80 mm / 3.1 in | 🌦 some rain |
| Rainy days | 7 days | |
| Humidity | 70% | 💧 humid |
| Dew point | 15°C / 60°F | |
| Sunshine | 12 h/day | |
| Daylight | 14.5 h | |
| Wind | 23 km/h / 14 mph | |
| Air quality (US AQI) | 31 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Montevideo in December — FAQ
- Is December a good time to visit Montevideo?
- December in Montevideo: warm, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Montevideo on SeasonMap's comfort score (89/100).
- What is the weather like in Montevideo in December?
- In December, Montevideo averages a daily high of 24.2°C and a low of 18.4°C, with about 79.7 mm of rain over roughly 7.2 rainy days.
- What is the air quality in Montevideo in December?
- Montevideo has a mean US Air Quality Index of about 31 in December.