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Climate · Ulaanbaatar

Ulaanbaatar in December

Cold and dry, as the days hold steady.

Typical weather, averaged over 30 years

December in Ulaanbaatar is cold: highs near 16°F, lows near -8°F. Rain or snow is rare, and daylight holds at about 8 hours 27 minutes.December in Ulaanbaatar is cold: highs near -9°C, lows near -22°C. Rain or snow is rare, and daylight holds at about 8 hours 27 minutes.

High
16°F-9°Caverage
Low
-8°F-22°Caverage
Wet days
0a week · 4% of days
Daylight
8h 27mon average

Is December a good time to visit Ulaanbaatar?

December sits outside Ulaanbaatar's best months, which run from June to August. Expect cold days and rain or snow on fewer than one day a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How December sits in the year

week by week

Temperature

Highs near 16°F in December, against 12°F to 78°F through the year.Highs near -9°C in December, against -11°C to 26°C through the year.

Chance of a wet day

4% of days in December, against 3% to 37% through the year.

Cloud cover

49% cover in December, against 40% to 50% through the year.

Daylight

8h 27m in December, against 8h 27m to 15h 57m through the year.

Week by week, lightly smoothed, with December shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. November31°-1°low 8°low -13°1 wet day a weekRain on about one day a week.
  2. December16°-9°low -8°low -22°no wet daysRain on fewer than one day a week.
  3. January12°-11°low -16°low -27°no wet daysRain on fewer than one day a week.

Where Ulaanbaatar sits, in December

Asia/Ulaanbaatar
this place
typical high in December 40°F4°C95°F35°C
Sunrise, mid-December
8:35 AMsets 5:00 PM
Above the sea
1,290 mupland
Latitude
47.9°Nnorthern hemisphere
Nearest of ours
Bulgan511 km south-west

The land around Ulaanbaatar, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Mongolia in December

high · low · wet days
See December on the planning mapThe whole year in Ulaanbaatar

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Ulaanbaatar. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,290 m) against the climate model's (1,502 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,290 m) against the climate model's (1,502 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.