Ulaanbaatar weather in December
Temperature, rain and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: May – September
What is the weather like in Ulaanbaatar in December?
In December, Ulaanbaatar is freezing cold: daytime highs average −12 °C, and nights often drop below freezing (−22 °C). Expect around 4 hours of sunshine a day. It hardly ever rains. All in all, December is not an ideal month for a holiday in Ulaanbaatar.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 39 | 35 | 38 |
| Day | −4° | −12° | −13° |
| Night | −14° | −22° | −25° |
| Sun | 6 h | 4 h | 5 h |
| Rain days | 3 | 1 | 1 |
More details for December
- Daylight
- 8 h 25 min08:35 – 17:00
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 12 km/haverage daily peakAll months
- Cloud cover
- 42 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 1 day1 cm or more of fresh snowAll months
- Time zone
- UTC+8Asia/Ulaanbaatar
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %23 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- Warm jacket
- Hat, scarf & gloves
Ulaanbaatar in December: quick answers
Is Ulaanbaatar hot in December?
No. In December, Ulaanbaatar is freezing cold: daytime highs average −12 °C and nights drop to about −22 °C.
Does it rain much in Ulaanbaatar in December?
It hardly ever rains.
Ulaanbaatar month by month
The whole year in UlaanbaatarAll destinations: MongoliaWhere to go in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences