Last updated: March 2, 2024
The weather in Rio San Juan, Dominican Republic, during September is characterized by an average temperature of 27°C (82°F). Highs can soar to 30°C (87°F), while lows may dip to 25°C (77°F). Typically, the humidity level in Rio San Juan throughout September hovers around 73%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Rio San Juan averages 145 mm (5.7 inches) of rainfall, typically over the course of 20 rainy days. The month enjoys an average of 12 hours 13 minutes of daylight, with the sun shining for approximately 10 hours 38 minutes each day. Additionally, there is a 52% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In September, the UV Index in Rio San Juan 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 | 2 | 4 | 7 | 10 | 12 | 12 | 10 | 7 | 4 | 2 | 1 | 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 | ||||