Last updated: March 2, 2024
The weather in Usuki, Japan, during September is characterized by an average temperature of 25°C (77°F). Highs can soar to 33°C (92°F), while lows may dip to 16°C (61°F). Typically, the humidity level in Usuki throughout September hovers around 84%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Usuki averages 240 mm (9.5 inches) of rainfall, typically over the course of 17 rainy days. The month enjoys an average of 12 hours 21 minutes of daylight, with the sun shining for approximately 8 hours 27 minutes each day. Additionally, there is a 33% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Usuki reaches a maximum of 11, 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 | 5 | 7 | 10 | 11 | 10 | 8 | 5 | 3 | 1 | 1 | 0 |
| Exposure | Low | Moderate | High | VeryHigh | Extreme | VeryHigh | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 15 min | 30 min | 45 min | |||||