Last updated: March 2, 2024
The weather in Oshima, Japan, during September is characterized by an average temperature of 25°C (76°F). Highs can soar to 28°C (83°F), while lows may dip to 21°C (69°F). Typically, the humidity level in Oshima throughout September hovers around 86%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In September, Oshima averages 249 mm (9.8 inches) of rainfall, typically over the course of 19 rainy days. The month enjoys an average of 12 hours 21 minutes of daylight, with the sun shining for approximately 8 hours 28 minutes each day. Additionally, there is a 31% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In September, the UV Index in Oshima 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 | 2 | 3 | 6 | 8 | 10 | 10 | 8 | 6 | 4 | 2 | 1 | 0 | 0 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||