Last updated: March 2, 2024
The weather in Ishii, Japan, during September is characterized by an average temperature of 24°C (75°F). Highs can soar to 30°C (86°F), while lows may dip to 18°C (64°F). Typically, the humidity level in Ishii throughout September hovers around 85%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Ishii averages 294 mm (11.6 inches) of rainfall, typically over the course of 18 rainy days. The month enjoys an average of 12 hours 21 minutes of daylight, with the sun shining for approximately 8 hours 42 minutes each day. Additionally, there is a 26% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Ishii reaches a maximum of 10, 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 | 1 | 3 | 5 | 8 | 10 | 10 | 9 | 7 | 5 | 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 | |||||||