Last updated: March 2, 2024
The weather in Ilhabela, Brazil, during September is characterized by an average temperature of 21°C (70°F). Highs can soar to 28°C (83°F), while lows may dip to 18°C (64°F). Typically, the humidity level in Ilhabela throughout September hovers around 58%.
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Average temperature
Maximum temperature
Humidity
In September, Ilhabela averages 101 mm (4.0 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 11 hours 57 minutes of daylight, with the sun shining for approximately 9 hours 35 minutes each day. Additionally, there is a 40% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In September, the UV Index in Ilhabela reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, 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 | 3 | 6 | 9 | 11 | 11 | 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 | ||||