In December, Koson typically sees daytime highs of 9.2°C and overnight lows around -0.6°C. Compared to the annual average high of 22.3°C, December runs -13.2°C.
December in Koson averages a daytime high of 9.2°C and an overnight low of -0.6°C.
December runs -13.2°C compared to Koson's annual average high of 22.3°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 9.2°C and cooler evenings around -0.6°C.