Climate Insights for Montevideo

The climate in Montevideo is temperate. The average annual temperature is 17°C and approximately 1070mm 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, December. 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 25°C. January is the warmest month, though highs remain moderate at 25°C with a mean of 23°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 3°C shift in average temperatures.

Montevideo is a moderately rainy area, receiving approximately 1070mm of precipitation annually, which averages out to around 89mm per month. The wettest month is July, averaging 155mm of rainfall. April and May also tend to see above-average precipitation. The driest month is January, with just 53mm. That's 102mm less than July, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

Montevideo is relatively calm, with an average annual wind speed of 6km/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 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.

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 25°C, while the coldest stretch bottoms out in July near 10°C. Winter is next, beginning on June 21, 2026 — 4 days from now.

The best time to visit Montevideo 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 69mm per month. By contrast, July can be quite cold with temperatures dropping to 10°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 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.