Treinta y Tres Weather in December
What's the weather like in Treinta y Tres (Treinta y Tres) in December 2025?
The climate in Treinta y Tres during December can be summarized as warm and a little damp.
December is in the summer in Treinta y Tres and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 28°C (83°F), whilst at night 15°C (60°F) is normal.
| Daytime temperature | 28.2°C 82.8°F |
|---|---|
| Nightly temperature | 15.4°C 59.7°F |
| Average temperature | 21.8°C 71.2°F |
| Daily sunshine | 9.4 hrs |
| Avg rainfall | 93 mm 3.7 ins |
| Rainy days | 9 days |
| Sea temperature | 21°C 69.7°F |
| Humidity | 68% |
| Windspeed | 13.3kph 8 mph |
On average December is the 2nd driest month of the year in Treinta y Tres with around 93mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.4 hours of sunshine per day.
December temperatures in Treinta y Tres
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 Treinta y Tres in December 2025.
Other monthly averages
Best places to visit in December
Treinta y Tres weather stats
| Hottest month: | January | 29.3°C 84.7°F |
|---|---|---|
| Driest month: | April | 82mm 3.2ins |
| Sunniest month: | December | 9.4hrs |
| Coldest month: | July | 16.2°C 61.2°F |
| Wettest month: | July | 130mm 5.1ins |
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