Last updated: August 22, 2025
In Sao Marcos, Brazil during December, the average temperature is a pleasant 20°C (69°F), with a minimum dipping to 5°C (41°F) and a maximum peaking at 33°C (92°F). Expect 14 days of rainfall, accumulating around 98 mm (3.8 in), alongside an average humidity of 87%, creating a lush and vibrant atmosphere.
In December in Sao Marcos, the average temperature is 20°C (69°F), with maximums reaching 33°C (92°F) and minimums dropping to as low as 5°C (41°F). This makes it an ideal time for travelers to experience a pleasant mix of warm days and cooler evenings.
In Sao Marcos in December, the precipitation amount is 98 mm (3.8 in) over the course of 14 days.
In Sao Marcos in December humidity is 87%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping blanket, making outdoor activities such as sightseeing and hiking quite challenging, as the thick air can leave you feeling sticky and tired quickly.
In Sao Marcos in December, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Sao Marcos.
UV Risk Categories
Weather in Sao Marcos varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sao Marcos, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 21°C (71°F) | 158 mm (6.2 inches) | 80% | extreme |
| February Weather | 20°C (69°F) | 144 mm (5.7 inches) | 77% | extreme |
| March Weather | 19°C (67°F) | 124 mm (4.9 inches) | 79% | extreme |
| April Weather | 17°C (63°F) | 90 mm (3.6 inches) | 83% | very high |
| May Weather | 14°C (57°F) | 178 mm (7.0 inches) | 88% | high |
| June Weather | 13°C (55°F) | 125 mm (4.9 inches) | 86% | moderate |
| July Weather | 12°C (53°F) | 134 mm (5.3 inches) | 82% | moderate |
| August Weather | 13°C (56°F) | 78 mm (3.1 inches) | 77% | high |
| September Weather | 16°C (61°F) | 156 mm (6.1 inches) | 80% | very high |
| October Weather | 17°C (63°F) | 142 mm (5.6 inches) | 84% | extreme |
| November Weather | 18°C (65°F) | 139 mm (5.5 inches) | 83% | extreme |
| December Weather | 20°C (69°F) | 98 mm (3.8 inches) | 87% | extreme |