Last updated: March 2, 2024
The weather in Santa Isabel do Rio Negro, Brazil, during September is characterized by an average temperature of 27°C (81°F). Highs can soar to 34°C (93°F), while lows may dip to 23°C (73°F). Typically, the humidity level in Santa Isabel do Rio Negro throughout September hovers around 38%.
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Average temperature
Maximum temperature
Humidity
In September, Santa Isabel do Rio Negro averages 166 mm (6.6 inches) of rainfall, typically over the course of 24 rainy days. The month enjoys an average of 12 hours 5 minutes of daylight, with the sun shining for approximately 9 hours 52 minutes each day. Additionally, there is a 25% probability of sunny days during this period.
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Chance of sun
In September, the UV Index in Santa Isabel do Rio Negro reaches a maximum of 14, 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 | 2 | 5 | 9 | 12 | 14 | 13 | 10 | 6 | 3 | 1 | 1 | 0 |
| Exposure | Low | Moderate | VeryHigh | Extreme | VeryHigh | High | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 15 min | 10 min | 15 min | 25 min | 30 min | 45 min | |||||