February in Ansan-si averages a daily high of 5.1°C with nights around -3.3°C. Expect roughly 3.2 wet days totalling 16mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Ansan-si is May–June.
Based on INCHEON, KS (23.1km), 1995–2024. 20 years of February data.