Climate almanac
Iwanai
Hokkaido, Japan · 42.97°, 140.51°
What is the weather like in Iwanai in January?
In January, Iwanai is typically 29°F (-2°C) during the day and 22°F (-6°C) at night. The month brings about 5.2 in (132 mm) of precipitation in total. Snowfall averages about 35 in (878 mm) over the month.
- Average high29°F (-2°C)
- Average low22°F (-6°C)
- Precipitation5.2 in (132 mm)
- Clear or mostly clear days1
- Snowfall35 in (878 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)