Last updated: August 22, 2025
In September, the average temperature in Santa Maria, Brazil is a pleasant 17°C (64°F). Expect a range where the minimum can dip to 4°C (39°F), while highs can soar up to 33°C (92°F). During this month, anticipate 148 mm (5.8 in) of precipitation spread over approximately 12 days, contributing to a notably high average humidity of 74%.
In September in Santa Maria, the average temperature is 17°C (64°F), with maximums reaching up to 33°C (92°F) and minimums dropping as low as 4°C (39°F). This pleasant climate makes Santa Maria an ideal destination for travelers looking to enjoy a range of outdoor activities.
In Santa Maria in September, the precipitation amount is 148 mm (5.8 in), which falls over a span of 12 days.
In Santa Maria in September, humidity is 74%. With an average temperature of 17°C (64°F), this humidity feels like a warm, sticky embrace that can make outdoor activities somewhat uncomfortable, especially for travelers who enjoy exploring. It's advisable to stay hydrated and take frequent breaks in the shade to fully enjoy your adventures.
In Santa Maria in September, 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 Santa Maria.
UV Risk Categories
Weather in Santa Maria varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santa Maria, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 25°C (77°F) | 143 mm (5.6 inches) | 74% | extreme |
| February Weather | 24°C (75°F) | 107 mm (4.2 inches) | 73% | extreme |
| March Weather | 23°C (73°F) | 116 mm (4.6 inches) | 73% | extreme |
| April Weather | 20°C (69°F) | 79 mm (3.1 inches) | 81% | very high |
| May Weather | 16°C (61°F) | 200 mm (7.9 inches) | 87% | high |
| June Weather | 15°C (59°F) | 120 mm (4.7 inches) | 84% | moderate |
| July Weather | 14°C (57°F) | 106 mm (4.2 inches) | 80% | moderate |
| August Weather | 15°C (60°F) | 103 mm (4.1 inches) | 71% | high |
| September Weather | 17°C (64°F) | 148 mm (5.8 inches) | 74% | very high |
| October Weather | 19°C (67°F) | 168 mm (6.6 inches) | 77% | extreme |
| November Weather | 22°C (71°F) | 137 mm (5.4 inches) | 77% | extreme |
| December Weather | 24°C (76°F) | 72 mm (2.8 inches) | 85% | extreme |