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December in Balneario Buenos Aires sees daytime temperatures around 24°C (75°F) and lows of 17°C (63°F) at night. With around 76 mm (3 in) of rainfall expected, it's worth packing a rain jacket.
If your ideal day consists of dry skies and pleasant temperatures, January, March, November and December typically offer the best circumstances for Balneario Buenos Aires.
Pick a month to see the average temperature, rainfall and sunshine in Balneario Buenos Aires - and find the best time to visit.
49-year average (1976-2025)
Based on our historical records, temperatures in Balneario Buenos Aires typically stay consistent throughout December, with daily highs averaging around 24°C (75°F). Nights are pleasant, with lows typically ranging from 14°C (57°F) to 18°C (64°F).
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Balneario Buenos Aires spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
According to our 45 years of weather records for Balneario Buenos Aires, the following extremes were recorded between 1980 and 2025.
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 is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Pleasant temperatures in December mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
See the full Balneario Buenos Aires climate overview or explore weather in Uruguay.
Where to go in December - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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