Climate Insights for Chivilcoy

The climate in Chivilcoy is temperate. The average annual temperature is 16°C and approximately 955mm of precipitation falls per year. February is the wettest month, receiving around 205mm of rainfall. Chivilcoy 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, February, January. The coldest months are June, July, August, when temperatures can drop to 4°C.

Temperatures in Chivilcoy vary considerably across the year, with a 27°C difference between the coldest and warmest months. The warmest month is December, when average highs reach 31°C and the mean temperature sits around 24°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 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 5°C shift in average temperatures.

Chivilcoy is a moderately rainy area, receiving approximately 955mm of precipitation annually, which averages out to around 80mm per month. The wettest month is February, averaging 205mm of rainfall. December and April also tend to see above-average precipitation. The driest month is August, with just 4mm. That's 200mm 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.

Chivilcoy is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

It is currently winter in Chivilcoy, which began on June 21, 2026. Chivilcoy 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 31°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 Chivilcoy is during January, March and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 65mm per month. By contrast, December can be uncomfortably hot with highs reaching 31°C, while June is the coldest period with lows dropping to 4°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Chivilcoy 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.