In December, Tsukuba typically sees daytime highs of 11.1°C and overnight lows around 0.3°C. Compared to the annual average high of 18.9°C, December runs -7.7°C.
December in Tsukuba averages a daytime high of 11.1°C and an overnight low of 0.3°C.
December runs -7.7°C compared to Tsukuba's annual average high of 18.9°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 11.1°C and cooler evenings around 0.3°C.