Climate Insights for Río Tercero

The climate in Río Tercero is temperate. The average annual temperature is 16°C and approximately 719mm of precipitation falls per year. February is the wettest month, receiving around 148mm of rainfall. Río Tercero is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: December, January, February. The coldest months are June, July, August, when temperatures can drop to 4°C.

Temperatures in Río Tercero vary considerably across the year, with a 26°C difference between the coldest and warmest months. The warmest month is December, when average highs reach 30°C and the mean temperature sits around 23°C. June is the coolest month, with minimum temperatures around 4°C and an average of 8°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 4°C shift in average temperatures.

Río Tercero is a relatively dry area, receiving approximately 719mm of precipitation annually, which averages out to around 60mm per month. The wettest month is February, averaging 148mm of rainfall. January and October also tend to see above-average precipitation. The driest month is September, with just 2mm. That's 146mm less than February, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Río Tercero is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.

It is currently winter in Río Tercero, which began on June 21, 2026. Río Tercero is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in December at around 30°C, while the coldest stretch bottoms out in June near 4°C. Spring is next, beginning on September 23, 2026 — 63 days from now.

The best time to visit Río Tercero is during March, April, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 73mm per month. By contrast, June can be quite cold with temperatures dropping to 4°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Río Tercero based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.