Last updated: March 2, 2024
The weather in Roseau, Dominica, during September is characterized by an average temperature of 27°C (81°F). Highs can soar to 29°C (84°F), while lows may dip to 25°C (78°F). Typically, the humidity level in Roseau throughout September hovers around 80%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Roseau averages 114 mm (4.5 inches) of rainfall, typically over the course of 17 rainy days. The month enjoys an average of 12 hours 11 minutes of daylight, with the sun shining for approximately 10 hours 37 minutes each day. Additionally, there is a 59% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In September, the UV Index in Roseau reaches a maximum of 13, 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 | 3 | 6 | 10 | 12 | 13 | 12 | 9 | 6 | 3 | 1 | 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 | ||||