Last updated: March 2, 2024
The weather in Arai, Japan, during September is characterized by an average temperature of 20°C (69°F). Highs can soar to 30°C (86°F), while lows may dip to 12°C (53°F). Typically, the humidity level in Arai throughout September hovers around 89%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Arai averages 207 mm (8.2 inches) of rainfall, typically over the course of 18 rainy days. The month enjoys an average of 12 hours 23 minutes of daylight, with the sun shining for approximately 8 hours 28 minutes each day. Additionally, there is a 29% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Arai reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 15 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 | 2 | 3 | 5 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 | 1 | 0 |
| Exposure | Low | Moderate | VeryHigh | High | Moderate | Low | |||||||
| Time to burn | 45 min | 30 min | 15 min | 25 min | 30 min | 45 min | |||||||