In December, Shimonoseki typically sees daytime highs of 10.5°C and overnight lows around 3.5°C. Compared to the annual average high of 18.8°C, December runs -8.2°C.
December in Shimonoseki averages a daytime high of 10.5°C and an overnight low of 3.5°C.
December runs -8.2°C compared to Shimonoseki's annual average high of 18.8°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 10.5°C and cooler evenings around 3.5°C.