Last updated: June 24, 2025
In August, the average temperature in Montevideo, United States is a comfortable 21°C (71°F). You can expect a minimum of 8°C (47°F) and a maximum of 35°C (96°F), making it ideal for a variety of activities. However, be prepared for some rain, as the region receives approximately 133 mm (5.2 in) of precipitation over 11 days, resulting in an average humidity level of 83%. Whether you're exploring or relaxing, make the most of this delightful climate!
In August in Montevideo, the average temperature is 21°C (71°F). Maximum temperatures can reach as high as 35°C (96°F), while minimums can drop to as low as 8°C (47°F). This climate makes it an ideal time for travelers to enjoy a variety of outdoor activities, from sightseeing to relaxing in the comfortable warmth.
In Montevideo in August, the precipitation amount is 133 mm (5.2 in) spread over a period of 11 days.
In Montevideo in August humidity is 83%. With an average temperature of 21°C (71°F), this humidity feels like walking through a warm mist, making travel both refreshing and slightly uncomfortable as the air clings to your skin and you find yourself needing to take frequent breaks to hydrate.
In Montevideo in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Montevideo.
UV Risk Categories
Weather in Montevideo varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Montevideo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (15°F) | 20 mm (0.8 inches) | 85% | moderate |
| February Weather | -9°C (15°F) | 20 mm (0.8 inches) | 89% | moderate |
| March Weather | 0°C (32°F) | 53 mm (2.1 inches) | 81% | moderate |
| April Weather | 6°C (43°F) | 69 mm (2.7 inches) | 82% | high |
| May Weather | 15°C (59°F) | 101 mm (4.0 inches) | 76% | very high |
| June Weather | 22°C (72°F) | 82 mm (3.2 inches) | 81% | very high |
| July Weather | 23°C (74°F) | 102 mm (4.0 inches) | 82% | very high |
| August Weather | 21°C (71°F) | 133 mm (5.2 inches) | 83% | very high |
| September Weather | 18°C (64°F) | 95 mm (3.8 inches) | 82% | high |
| October Weather | 9°C (48°F) | 89 mm (3.5 inches) | 82% | moderate |
| November Weather | 1°C (34°F) | 26 mm (1.0 inches) | 87% | moderate |
| December Weather | -5°C (24°F) | 38 mm (1.5 inches) | 84% | low |