Ulaanbaatar weather in December

Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average

Ulaanbaatar December weather at a glance

D Challenging 😓

In December, Ulaanbaatar averages -18.7°C, with typical highs of -13.1°C and lows of -22.9°C. The historical average is 1 wet days and 71% humidity.

Compared with Seoul in December, it is 17.8°C cooler than Seoul, with 4 fewer wet days.

Ulaanbaatar December temperature & humidity

Average-18.7°CHigh -13.1° / low -22.9°

Humidity71%

Wet days1 days2% of days

Day–night range9.8°

Ulaanbaatar December rain & wet days

Wet days1 daysHistorical monthly average

Share of wet days2%Not a forecast probability

Pack a compact umbrella. Keep an indoor stop available between outdoor activities.

What to wear in Ulaanbaatar in December

Pack a warm insulated coat, thermal layers, gloves and a scarf.

DaytimeWarm coat and layered tops · average high -13.1°C
Morning & eveningInsulating coat, scarf and gloves · average low -22.9°C
FootwearComfortable walking shoes; quick-dry footwear for rainy days.

Useful extras

Insulated coatThermal base layersGloves and scarf

Choose a destination packing checklist →

Packing essentials

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Travel compression packing pouches
코멧 여행용 압축 파우치 4종 세트 Travel plug adapter
에너자이저 PD 45W 여행용 멀티 어댑터, 화이트 Inflatable travel neck pillow
마이워니 여행용 에어 목베개

Ulaanbaatar December sunrise & sunset times

2026 December · Local time (Asia/Ulaanbaatar)

Sunrise on the 15th08:35

Sunset on the 15th17:00

Daylight duration8h 25m

Start, middle and end of the month
Date	Sunrise	Sunset	Daylight
2026-12-01	08:20	17:02	8h 42m
2026-12-15	08:35	17:00	8h 25m
2026-12-31	08:42	17:09	8h 27m

For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.

Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup

Ulaanbaatar travel updates

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Ulaanbaatar travel essentials

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Best months to visit Ulaanbaatar

Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.

J F M A M J J A S O N D

ColdHot

December weather by year

December 2024-17.8°1 wet days, 71% humidity

December 2025-19.5°0 wet days, 71% humidity

Daily weather in 2025

Daily high and low temperatures; blue labels show precipitation

1-23°-32°

2-20°-31°

3-14°-28°

4-10°-25°

5-11°-20°

6-11°-18°

7-12°-20°

8-12°-22°

9-12°-22°

10-18°-29°

11-17°-32°

12-18°-24°

13-16°-26°

14-11°-23°

15-11°-20°

16-11°-20°

17-6°-18°

18-5°-13°

19-13°-26°

20-18°-28°

21-14°-26°

22-11°-23°

23-15°-23°

24-17°-26°

25-13°-26°

26-12°-22°

27-9°-22°

28-13°-22°

29-17°-26°

30-17°-27°

31-14°-26°

Frequently asked questions

What is Ulaanbaatar weather like in December?

In December, Ulaanbaatar averages -18.7°C, with typical highs of -13.1°C and lows of -22.9°C. The historical average is 1 wet days and 71% humidity. Our weather-comfort rating for this month is challenging.

Does it rain a lot in Ulaanbaatar in December?

There are about 1 wet days in December. A compact umbrella is still useful.

What should I wear in Ulaanbaatar in December?

Pack a warm insulated coat, thermal layers, gloves and a scarf.

What are the best months to visit Ulaanbaatar?

Recent weather data rates May, June, September among the more comfortable months.

Where can I check Ulaanbaatar weather in December in real time?

Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.

What time are sunrise and sunset in Ulaanbaatar in December?

On 2026-12-15, calculated sunrise is 08:35 and sunset is 17:00 in local time (Asia/Ulaanbaatar). Times vary by date and terrain.

Ulaanbaatar weather by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

More Greater China destinations in December

Taipei Kaohsiung Taichung Hualien Macau Shanghai Beijing Qingdao Zhangjiajie Chengdu Xi'an Harbin Guangzhou Sanya Hainan Guilin Hong Kong Osaka Tokyo All destinations →

Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations