Last updated: March 2, 2024
The weather in Arenal, Honduras, during September is characterized by an average temperature of 24°C (76°F). Highs can soar to 34°C (93°F), while lows may dip to 18°C (64°F). Typically, the humidity level in Arenal throughout September hovers around 75%.
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Average temperature
Maximum temperature
Humidity
In September, Arenal averages 125 mm (4.9 inches) of rainfall, typically over the course of 18 rainy days. The month enjoys an average of 12 hours 11 minutes of daylight, with the sun shining for approximately 9 hours 58 minutes each day. Additionally, there is a 36% probability of sunny days during this period.
Precipitation
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Chance of sun
In September, the UV Index in Arenal reaches a maximum of 13, 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 | 2 | 4 | 7 | 11 | 13 | 13 | 12 | 9 | 5 | 2 | 1 | 0 | 0 |
| Exposure | Low | Moderate | High | Extreme | VeryHigh | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 10 min | 15 min | 30 min | 45 min | ||||||