In December, Kusatsu typically sees daytime highs of 9.0°C and overnight lows around 0.9°C. Compared to the annual average high of 18.0°C, December runs -8.9°C.
December in Kusatsu averages a daytime high of 9.0°C and an overnight low of 0.9°C.
December runs -8.9°C compared to Kusatsu's annual average high of 18.0°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 9.0°C and cooler evenings around 0.9°C.