Colonia Rosario Weather in December
With daytime temperatures of 28°C (82°F) and nighttime lows of 17°C (63°F), December in Colonia Rosario brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 86 mm (3.4 in) falls on average.
Rainfall in Colonia Rosario in December
The climate data from previous years indicates about 9 days of rain, averaging 86 mm (3.4 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Colonia Rosario in December
December is a good time to be in Colonia Rosario. Days are perfect, reaching 28°C (82°F), with nights around 17°C (63°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights drop to around 17°C (63°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Uruguay, check out our Colonia Rosario's climate page.
Colonia Rosario Temperature in December
Min Temperature
17°C (63°F)
Max Temperature
28°C (82°F)
Chance of Rain
31%
Precipitation
86 mm (3.4 in)
Rainy days
9 days
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Colonia Rosario typically stay consistent throughout December, with daily highs averaging around 28°C (82°F). Nights are pleasant, with lows typically ranging from 17°C (63°F) to 20°C (68°F).
Average temperatures in December
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Colonia Rosario in December
Browse day-by-day weather records for Colonia Rosario spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Colonia Rosario historical weather extremes in December
Based on weather observations in Colonia Rosario between 1980 and 2025, these are the recorded extremes during December.
- On December 26, 2013, temperatures climbed to 38°C (100°F), marking the warmest December day on record.
- Colonia Rosario experienced its chilliest December day on December 22, 1998, reaching only 16°C (61°F).
- The lowest overnight temperature recorded in December was 9°C (48°F) (December 31, 1990).
Best Places in Uruguay in December
Find out more about the weather in Uruguay and which places have the best travel conditions in this month. See all of Uruguay in December →
perfect weather
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tolerable
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What to Wear in Colonia Rosario in December
Warm weather calls for comfortable, breathable clothing in December. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho.What To Do in Colonia Rosario in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Uruguay, check out our Colonia Rosario's climate page.
See the full Colonia Rosario climate overview or explore weather in Uruguay.
