In December, Shiraoka typically sees daytime highs of 11.6°C and overnight lows around 1.0°C. Compared to the annual average high of 19.5°C, December runs -7.9°C.
December in Shiraoka averages a daytime high of 11.6°C and an overnight low of 1.0°C.
December runs -7.9°C compared to Shiraoka's annual average high of 19.5°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 11.6°C and cooler evenings around 1.0°C.