Last updated: March 2, 2024
The weather in Dumai, Indonesia, during September is characterized by an average temperature of 27°C (82°F). Highs can soar to 34°C (94°F), while lows may dip to 23°C (74°F). Typically, the humidity level in Dumai throughout September hovers around 89%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Dumai averages 264 mm (10.4 inches) of rainfall, typically over the course of 25 rainy days. The month enjoys an average of 12 hours 6 minutes of daylight, with the sun shining for approximately 9 hours 36 minutes each day. Additionally, there is a 15% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Dumai 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 | 3 | 6 | 10 | 13 | 14 | 13 | 10 | 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 | ||||