In December, Ansan-si typically sees daytime highs of 4.1°C and overnight lows around -4.6°C. Compared to the annual average high of 15.9°C, December runs -11.9°C.
December in Ansan-si averages a daytime high of 4.1°C and an overnight low of -4.6°C.
December runs -11.9°C compared to Ansan-si's annual average high of 15.9°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 4.1°C and cooler evenings around -4.6°C.