Last updated: August 28, 2025
The average temperature in 25 de Mayo, Uruguay during December is a pleasant 22°C (72°F). You can expect temperatures to range from a cool 8°C (47°F) to a warm 36°C (98°F). With an average precipitation of 67 mm (2.7 in) spread over 6 days, you'll want to keep an umbrella handy. Overall, the air is fairly humid, with an average humidity of 65%. Enjoy the climate!
In December in 25 de Mayo, the average temperature is 22°C (72°F). Maximums can reach 36°C (98°F), and minimums can drop as low as 8°C (47°F). Be prepared for a range of temperatures and pack accordingly for your trip!
In 25 de Mayo in December, the precipitation amount is 67 mm (2.7 in) over the course of 6 days, indicating a moderate level of rainfall for the region during that time.
In 25 de Mayo in December, humidity is 65%. With an average temperature of 22°C (72°F), this humidity feels like a warm, tropical embrace that can make outdoor activities quite sticky, yet still enjoyable if you stay hydrated and take breaks in the shade.
In 25 de Mayo in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in 25 de Mayo, you can check here.
UV Risk Categories
Weather in 25 de Mayo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in 25 de Mayo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 24°C (75°F) | 76 mm (3.0 inches) | 63% | extreme |
| February Weather | 23°C (73°F) | 96 mm (3.8 inches) | 69% | extreme |
| March Weather | 21°C (70°F) | 77 mm (3.0 inches) | 73% | extreme |
| April Weather | 18°C (65°F) | 79 mm (3.1 inches) | 79% | high |
| May Weather | 14°C (58°F) | 116 mm (4.6 inches) | 82% | moderate |
| June Weather | 12°C (54°F) | 107 mm (4.2 inches) | 80% | moderate |
| July Weather | 11°C (52°F) | 99 mm (3.9 inches) | 72% | moderate |
| August Weather | 12°C (54°F) | 88 mm (3.5 inches) | 72% | high |
| September Weather | 14°C (58°F) | 93 mm (3.6 inches) | 76% | very high |
| October Weather | 16°C (62°F) | 96 mm (3.8 inches) | 71% | extreme |
| November Weather | 20°C (68°F) | 69 mm (2.7 inches) | 68% | extreme |
| December Weather | 22°C (72°F) | 67 mm (2.7 inches) | 65% | extreme |