Climate Insights for Avellaneda

The climate in Avellaneda is temperate. The average annual temperature is 14°C and approximately 1135mm of precipitation falls per year. Avellaneda receives a notable amount of rainfall throughout the year, including during its driest month. Avellaneda is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, March, when temperatures can drop to 6°C.

Avellaneda sees moderate temperature variation throughout the year, ranging from 6°C to 23°C. August is the warmest month, though highs remain moderate at 23°C with a mean of 20°C. January is the coolest month, with minimum temperatures around 6°C and an average of 8°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between October and November, with a 4°C shift in average temperatures.

Avellaneda is a moderately rainy area, receiving approximately 1135mm of precipitation annually, which averages out to around 95mm per month. The wettest month is November, averaging 147mm of rainfall. January and February also tend to see above-average precipitation. The driest month is July, with just 45mm. That's 102mm less than November, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Avellaneda is mildly breezy, with an average annual wind speed of 18km/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 20km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in June, with average winds dropping to 16km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 20km/h in winter, 18km/h in spring, 16km/h in summer, 18km/h in autumn.

It is currently spring in Avellaneda, which began on March 20, 2026. Avellaneda is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 23°C, while the coldest stretch bottoms out in January near 6°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Avellaneda is during June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 73mm per month. By contrast, January can be quite cold with temperatures dropping to 6°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 Avellaneda 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.