Climate Insights for Bella Unión

The climate in Bella Unión is warm and mild. The average annual temperature is 20°C and approximately 1273mm of precipitation falls per year. Bella Unión receives a notable amount of rainfall throughout the year, including during its driest month. Bella Unión 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: January, February, December. The coldest months are July, June, August, when temperatures can drop to 9°C.

Temperatures in Bella Unión vary considerably across the year, with a 23°C difference between the coldest and warmest months. The warmest month is January, when average highs reach 32°C and the mean temperature sits around 26°C. July is the coolest month, with minimum temperatures around 9°C and an average of 14°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 4°C shift in average temperatures.

Bella Unión is a fairly wet location, receiving approximately 1273mm of precipitation annually, which averages out to around 106mm per month. The wettest month is April, averaging 147mm of rainfall. May and September also tend to see above-average precipitation. The driest month is July, with just 67mm. That's 80mm less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.

Bella Unión is mildly breezy, with an average annual wind speed of 13km/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 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.

It is currently winter in Bella Unión, which began on June 21, 2026. Bella Unión 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 January at around 32°C, while the coldest stretch bottoms out in July near 9°C. Spring is next, beginning on September 23, 2026 (3 days from now).

The best time to visit Bella Unión is during August and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 94mm per month. By contrast, January can be uncomfortably hot with highs reaching 32°C, while July is the coldest period with lows dropping to 9°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 Bella Unión 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.