Last updated: March 2, 2024
The weather in Petropolis, Brazil, during September is characterized by an average temperature of 21°C (71°F). Highs can soar to 33°C (92°F), while lows may dip to 13°C (56°F). Typically, the humidity level in Petropolis throughout September hovers around 68%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Petropolis averages 67 mm (2.6 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 11 hours 58 minutes of daylight, with the sun shining for approximately 9 hours 55 minutes each day. Additionally, there is a 42% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Petropolis reaches a maximum of 12, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 10 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 4 | 6 | 9 | 11 | 12 | 10 | 7 | 4 | 2 | 1 | 0 | 0 |
| Exposure | Low | Moderate | High | VeryHigh | Extreme | VeryHigh | High | Moderate | Low | ||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min | ||||