Last updated: March 2, 2024
The weather in Biak, Indonesia, 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 (77°F). Typically, the humidity level in Biak throughout September hovers around 78%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Biak averages 239 mm (9.4 inches) of rainfall, typically over the course of 25 rainy days. The month enjoys an average of 12 hours 5 minutes of daylight, with the sun shining for approximately 9 hours 27 minutes each day. Additionally, there is a 24% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Biak reaches a maximum of 15, 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 | 4 | 8 | 12 | 14 | 15 | 13 | 9 | 5 | 2 | 1 | 0 | 0 |
| Exposure | Low | Moderate | VeryHigh | Extreme | VeryHigh | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 15 min | 10 min | 15 min | 30 min | 45 min | ||||||