Last updated: March 2, 2024
The weather in Iwanai, Japan, during May is characterized by an average temperature of 11°C (53°F). Highs can soar to 22°C (71°F), while lows may dip to 4°C (40°F). Typically, the humidity level in Iwanai throughout May hovers around 86%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, Iwanai averages 86 mm (3.4 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 14 hours 38 minutes of daylight, with the sun shining for approximately 10 hours 6 minutes each day. Additionally, there is a 27% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, the UV Index in Iwanai 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 | 4 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 | 1 | 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 | ||||||