In December, Tomakomai typically sees daytime highs of 2.1°C and overnight lows around -5.7°C. Compared to the annual average high of 11.0°C, December runs -8.9°C.
December in Tomakomai averages a daytime high of 2.1°C and an overnight low of -5.7°C.
December runs -8.9°C compared to Tomakomai's annual average high of 11.0°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 2.1°C and cooler evenings around -5.7°C.