Last updated: August 22, 2025
In Sao Marcos, Brazil, the average temperature in September hovers around 16°C (61°F). Expect a range from a chilly -1°C (31°F) at its lowest to a warm 31°C (88°F) at its peak. During this month, precipitation amounts can reach 156 mm (6.1 in) over approximately 12 days, while the air remains quite humid with an average humidity level of 80%.
In September in Sao Marcos, the average temperature is 16°C (61°F), with maximums reaching 31°C (88°F) and minimums dropping as low as -1°C (31°F). It's a great time for travelers to enjoy a mix of warm days and cool nights while exploring the beauty of Sao Marcos.
In Sao Marcos in September, the precipitation amount is 156 mm (6.1 in) over the course of 12 days.
In Sao Marcos in September, humidity is 80%. With an average temperature of 16°C (61°F), this humidity feels like a warm blanket wrapped around you, making sightseeing a sweat-inducing challenge but also lending a lush vibrancy to the surroundings that can enhance your travel experience.
In Sao Marcos in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more 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 September’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 |