Montevideo's climate is mild, with an average annual temperature of around 55°F (13°C). During the height of summer (January), Montevideo's average temperatures range from 64°F (18°C) to 82°F (28°C), while winters (June to August) are much cooler and tend to be wet. Average temperatures range between 45°F (7°C) and 53°F (12°C). Autumn is the wettest season.

Given its temperate climate, Montevideo is a pleasant destination at any time of year, though summer and early spring are probably the best times to go.