Last updated: August 22, 2025
In September, the average temperature in Santa Rosa, Brazil is a comfortable 20°C (69°F). Expect a minimum of 6°C (43°F) and a maximum of 36°C (96°F), offering a wide range of experiences. During this month, 116 mm (4.5 in) of precipitation falls over about 9 days, contributing to an average humidity of 62%. Plan your activities accordingly to make the most of this vibrant time!
In September in Santa Rosa, the average temperature is 20°C (69°F). Maximums can reach 36°C (96°F) and minimums can be as low as 6°C (43°F). This makes Santa Rosa an ideal destination for travelers seeking warmth during the day while still enjoying cooler evenings.
In Santa Rosa in September, the precipitation amount is 116 mm (4.5 in) over the course of 9 days.
In Santa Rosa in September, humidity is 62%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, making outdoor activities enjoyable but requiring a light breeze or shade for comfort while exploring.
In Santa Rosa 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 Santa Rosa.
UV Risk Categories
Weather in Santa Rosa varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santa Rosa, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 26°C (79°F) | 148 mm (5.8 inches) | 79% | extreme |
| February Weather | 25°C (77°F) | 104 mm (4.1 inches) | 74% | extreme |
| March Weather | 24°C (75°F) | 115 mm (4.5 inches) | 72% | extreme |
| April Weather | 21°C (71°F) | 113 mm (4.5 inches) | 78% | very high |
| May Weather | 18°C (64°F) | 198 mm (7.8 inches) | 82% | high |
| June Weather | 16°C (61°F) | 126 mm (5.0 inches) | 78% | moderate |
| July Weather | 15°C (60°F) | 98 mm (3.9 inches) | 73% | high |
| August Weather | 17°C (63°F) | 77 mm (3.0 inches) | 58% | high |
| September Weather | 20°C (69°F) | 116 mm (4.5 inches) | 62% | very high |
| October Weather | 22°C (72°F) | 174 mm (6.9 inches) | 65% | extreme |
| November Weather | 24°C (75°F) | 124 mm (4.9 inches) | 76% | extreme |
| December Weather | 26°C (79°F) | 83 mm (3.3 inches) | 85% | extreme |