In December, Yilan typically sees daytime highs of -11.3°C and overnight lows around -22.8°C. Compared to the annual average high of 8.6°C, December runs -19.9°C.
December in Yilan averages a daytime high of -11.3°C and an overnight low of -22.8°C.
December runs -19.9°C compared to Yilan's annual average high of 8.6°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near -11.3°C and cooler evenings around -22.8°C.