Climate Insights for Montevideo

The climate in Montevideo is temperate. The average annual temperature is 17°C and approximately 952mm of precipitation falls per year. Montevideo receives a notable amount of rainfall throughout the year, including during its driest month. Montevideo 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, March. The coldest months are July, August, June, when temperatures can drop to 10°C.

Montevideo sees moderate temperature variation throughout the year, ranging from 10°C to 24°C. January is the warmest month, though highs remain moderate at 24°C with a mean of 22°C. July is the coolest month, with minimum temperatures around 10°C and an average of 11°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows. The sharpest temperature change occurs between April and May, with a 4°C shift in average temperatures.

Montevideo is a moderately rainy area, receiving approximately 952mm of precipitation annually, which averages out to around 79mm per month. The wettest month is April, averaging 104mm of rainfall. July and May also tend to see above-average precipitation. The driest month is January, with just 59mm. That's 45mm 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.

Montevideo is very windy, with an average annual wind speed of 32km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is November, averaging 33km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in May, with average winds dropping to 30km/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. Wind tends to pick up during the summer months. The seasonal averages are 30km/h in winter, 32km/h in spring, 32km/h in summer, 31km/h in autumn.

It is currently autumn in Montevideo, which began on March 20, 2026. Montevideo 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 24°C, while the coldest stretch bottoms out in July near 10°C. Winter is next, beginning on June 21, 2026 — 90 days from now.

The best time to visit Montevideo is during January, February, March, May, 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 75mm per month. By contrast, July can be quite cold with temperatures dropping to 10°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 Montevideo 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.