In December, Shiroi typically sees daytime highs of 11.8°C and overnight lows around 1.6°C. Compared to the annual average high of 19.3°C, December runs -7.5°C.
December in Shiroi averages a daytime high of 11.8°C and an overnight low of 1.6°C.
December runs -7.5°C compared to Shiroi's annual average high of 19.3°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 11.8°C and cooler evenings around 1.6°C.