Climate almanac
Koesan
North Chungcheong, South Korea · 36.81°, 127.79°
What is the weather like in Koesan in September?
In September, Koesan is typically 78°F (26°C) during the day and 63°F (17°C) at night. The month brings about 6.7 in (170 mm) of precipitation in total.
- Average high78°F (26°C)
- Average low63°F (17°C)
- Precipitation6.7 in (170 mm)
- Clear or mostly clear days7
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)