In December, Ulan Bator typically sees daytime highs of -15.7°C and overnight lows around -27.6°C. Compared to the annual average high of 4.1°C, December runs -19.8°C.
December in Ulan Bator averages a daytime high of -15.7°C and an overnight low of -27.6°C.
December runs -19.8°C compared to Ulan Bator's annual average high of 4.1°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near -15.7°C and cooler evenings around -27.6°C.