Montevideo Weather in December
What's the weather like in Montevideo (Montevideo) in December 2025?
The climate in Montevideo during December can be summarized as warm and reasonably dry.
December is in the summer in Montevideo and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 26°C (79°F), whilst at night 16°C (61°F) is normal.
| Daytime temperature | 26.3°C 79.3°F |
|---|---|
| Nightly temperature | 16.3°C 61.3°F |
| Average temperature | 21.3°C 70.3°F |
| Daily sunshine | 9.7 hrs |
| Avg rainfall | 62 mm 2.4 ins |
| Rainy days | 10 days |
| Sea temperature | 20.8°C 69.5°F |
| Humidity | 69% |
| Windspeed | 17.6kph 11 mph |
On average December is the driest month of the year in Montevideo with around 62mm 2.4 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.7 hours of sunshine per day.
December temperatures in Montevideo
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Montevideo in December 2025.
Other monthly averages
Best places to visit in December
Montevideo weather stats
| Hottest month: | January | 27.9°C 82.2°F |
|---|---|---|
| Driest month: | December | 62mm 2.4ins |
| Sunniest month: | January | 10.1hrs |
| Coldest month: | July | 14.7°C 58.5°F |
| Wettest month: | October | 88mm 3.5ins |
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