Climate Insights for Mendoza

The climate in Mendoza is temperate. The average annual temperature is 15°C and approximately 531mm of precipitation falls per year. January is the wettest month, receiving around 82mm of rainfall. Mendoza 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, December, February. The coldest months are July, June, August, when temperatures can drop to 1°C. Light snow can occur between April and October.

Temperatures in Mendoza vary considerably across the year, with a 28°C difference between the coldest and warmest months. The warmest month is January, when average highs reach 29°C and the mean temperature sits around 23°C. July is the coolest month, with minimum temperatures around 1°C and an average of 6°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 4°C shift in average temperatures.

Mendoza is a relatively dry area, receiving approximately 531mm of precipitation annually, which averages out to around 44mm per month. The wettest month is January, averaging 82mm of rainfall. February and May also tend to see above-average precipitation. The driest month is August, with just 12mm. That's 70mm less than January, 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. Light snowfall can occur between April and October, totalling around 21cm annually. July is the snowiest month with approximately 4cm.

Mendoza is relatively calm, with an average annual wind speed of 2km/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 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 2km/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 Mendoza, which began on June 21, 2026. Mendoza 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 29°C, while the coldest stretch bottoms out in July near 1°C. Spring is next, beginning on September 23, 2026 — 84 days from now.

The best time to visit Mendoza is during January, February, March, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 58mm per month. By contrast, July can be quite cold with temperatures dropping to 1°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 Mendoza 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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.