Mongolia weather in December 2026

Q: How cold is it in Mongolia in December?

Daytime temperatures usually reach -14°C in Ulaanbaatar, Mongolia in December, falling to -25°C at night.

Q: How sunny is it in Mongolia in December?

There are normally 5 hours of bright sunshine each day in Ulaanbaatar, Mongolia in December - that's 61% of daylight hours.

Q: Does it rain in Mongolia in December?

There are usually 4 days with some rain in Ulaanbaatar, Mongolia in December and the average monthly rainfall is 4mm. Rain may fall as snow in this month.

Expect daytime maximum temperatures of -14°C in Mongolia in December based on long-term weather averages. There are 5 hours of sunshine per day on average, which might fall as snow.

-14
-14°C max day temperature
5
5 hours of sunshine per day
4
4 days with some rainfall
-25
-25°C min night temperature
8
8 hours of daylight per day
0
No heat & humidity
4
4 mm of monthly rainfall
1
1 (Low) UV index

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The December weather guide for Mongolia (Ulaanbaatar) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Mongolia destinations

Below are average maximum temperatures at popular countries, regions and places in Mongolia in December. Select a holiday destination to see more weather parameters.

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Metric (°C / mm) | Imperial (°F / inches)

How cold is it in Mongolia in December?

Daytime temperatures usually reach -14°C in Ulaanbaatar, Mongolia in December, falling to -25°C at night.

How sunny is it in Mongolia in December?

There are normally 5 hours of bright sunshine each day in Ulaanbaatar, Mongolia in December - that's 61% of daylight hours.

Does it rain in Mongolia in December?

There are usually 4 days with some rain in Ulaanbaatar, Mongolia in December and the average monthly rainfall is 4mm. Rain may fall as snow in this month.

Mongolia December sunrise & sunset times

Browse the sunrise and sunset times for Mongolia in December 2026. Select a month to view Mongolia sunrise and sunset times for the next 12 months. The Mongolia sunrise and sunset times shown below are for Ulaanbaatar.

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