Last updated: August 22, 2025
In December, the average temperature in Sao Leopoldo, Brazil is a pleasant 24°C (75°F). You're likely to experience a cool dip of 11°C (51°F) at night, while daytime highs can soar up to 38°C (100°F). With an average precipitation of 91 mm (3.6 in) spread across 9 days, and a high humidity level of 87%, it’s wise to stay hydrated and be prepared for occasional rain showers.
In December in Sao Leopoldo, the average temperature is 24°C (75°F). Maximums can reach 38°C (100°F), while minimums can drop as low as 11°C (51°F). This makes it an ideal time for travelers who enjoy warm weather but should be prepared for a range of temperatures.
In Sao Leopoldo in December, the precipitation amount is 91 mm (3.6 in) spread over 9 days.
In Sao Leopoldo in December, humidity is 87%. With an average temperature of 24°C (75°F), this humidity feels like a warm, sticky embrace that clings to your skin, making outdoor activities feel heavier and more exhausting, and the air thickens, leaving you longing for shade and refreshing breezes as you navigate your adventures.
In Sao Leopoldo 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 Sao Leopoldo, you can check here.
UV Risk Categories
Weather in Sao Leopoldo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sao Leopoldo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 25°C (78°F) | 123 mm (4.8 inches) | 80% | extreme |
| February Weather | 24°C (76°F) | 116 mm (4.6 inches) | 77% | extreme |
| March Weather | 23°C (73°F) | 115 mm (4.5 inches) | 79% | extreme |
| April Weather | 21°C (69°F) | 79 mm (3.1 inches) | 83% | very high |
| May Weather | 17°C (63°F) | 160 mm (6.3 inches) | 88% | high |
| June Weather | 15°C (60°F) | 123 mm (4.8 inches) | 86% | moderate |
| July Weather | 14°C (58°F) | 128 mm (5.0 inches) | 82% | moderate |
| August Weather | 16°C (60°F) | 78 mm (3.1 inches) | 77% | high |
| September Weather | 18°C (65°F) | 173 mm (6.8 inches) | 80% | very high |
| October Weather | 20°C (68°F) | 158 mm (6.2 inches) | 84% | extreme |
| November Weather | 21°C (71°F) | 129 mm (5.1 inches) | 83% | extreme |
| December Weather | 24°C (75°F) | 91 mm (3.6 inches) | 87% | extreme |