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Termas de Río Hondo in December sees very high daytime temperatures of 33°C (91°F) and nighttime lows of 22°C (72°F). As part of the rainy season, showers are frequent and often heavy. Budget around 174 mm (6.9 in) of rainfall for the month.
Our weather planner can help you find worldwide destinations with pleasant weather during this period. April, May, June, July, August and September typically offer the best weather for Termas de Río Hondo.
Pick a month to see the average temperature, rainfall and sunshine in Termas de Río Hondo - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Termas de Río Hondo typically stay consistent throughout December, with daily highs averaging around 33°C (91°F). Nights are warm, with lows typically ranging from 19°C (66°F) to 22°C (72°F).
50-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 Termas de Río Hondo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
The extremes listed below come from historical weather data collected in Termas de Río Hondo from 1976 through 2025.
Find out more about the weather in Argentina and which places have the best travel conditions in this month. See all of Argentina 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).
Hot weather in December means keeping cool is the priority. Loose-fitting clothes in natural fabrics work best. Pack plenty of shorts, tank tops, and breathable shirts. Don't forget a hat, swimwear, and comfortable sandals. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Termas de Río Hondo climate overview or explore weather in Argentina.
Where to go in December - average daytime high across popular destinations.
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