In December, Hekinan typically sees daytime highs of 11.8°C and overnight lows around 3.6°C. Compared to the annual average high of 19.7°C, December runs -7.8°C.
December in Hekinan averages a daytime high of 11.8°C and an overnight low of 3.6°C.
December runs -7.8°C compared to Hekinan's annual average high of 19.7°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 11.8°C and cooler evenings around 3.6°C.