In December, Tateyama typically sees daytime highs of 13.6°C and overnight lows around 6.4°C. Compared to the annual average high of 19.1°C, December runs -5.5°C.
December in Tateyama averages a daytime high of 13.6°C and an overnight low of 6.4°C.
December runs -5.5°C compared to Tateyama's annual average high of 19.1°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 13.6°C and cooler evenings around 6.4°C.