Climate almanac
Iwanai
Hokkaido, Japan · 42.97°, 140.51°
What is the weather like in Iwanai in May?
In May, Iwanai is typically 59°F (15°C) during the day and 48°F (9°C) at night. The month brings about 3.3 in (84 mm) of precipitation in total.
- Average high59°F (15°C)
- Average low48°F (9°C)
- Precipitation3.3 in (84 mm)
- Clear or mostly clear days9
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)