Ulaanbaatar
Mongolia
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Ulaanbaatar, Mongolia

The valley city of Ulaanbaatar in Mongolia, viewed from above, with the distant view of the mountain ranges
The valley city of Ulaanbaatar in Mongolia, viewed from above, with the distant view of the mountain ranges
The first month of the winter, December, is also a frigid cold month in Ulaanbaatar, Mongolia, with average temperature fluctuating between -13.5°C (7.7°F) and 0°C (32°F).

Temperature

In December, the average high-temperature declines considerably, from a freezing cold -5°C (23°F) in November, to an extremely cold -13.5°C (7.7°F). The average low-temperature, in Ulaanbaatar, is 0°C (32°F).

Humidity

Months with the highest humidity in Ulaanbaatar, Mongolia, are January and December, with an average relative humidity of 78%.

Rainfall

In Ulaanbaatar, in December, it is raining for 0.2 days, with typically 4mm (0.16") of accumulated precipitation. Throughout the year, in Ulaanbaatar, Mongolia, there are 62.7 rainfall days, and 267mm (10.51") of precipitation is accumulated.

Snowfall

Months with snowfall are January through December. December has the most snowfall days of the year in Ulaanbaatar, Mongolia. Snow falls for 10 days.

Daylight

With an average of 8.5h of daylight, December has the shortest days of the year.

Sunshine

December has the least sunshine of the year in Ulaanbaatar, with an average of 5h of sunshine.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 1 interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Ulaanbaatar?

In December, the average high-temperature is -13.5°C (7.7°F), and the average low-temperature is 0°C (32°F).

What is the most humid month in Ulaanbaatar?

January and December, with an average relative humidity of 78%, are most humid months.

What is the average humidity in December in Ulaanbaatar?

The average relative humidity in December in Ulaanbaatar, Mongolia, is 78%.

How much does it rain in Ulaanbaatar in December?

In December, in Ulaanbaatar, Mongolia, the rain falls for 0.2 days. Throughout December, 4mm (0.16") of precipitation is accumulated.

How many days does it snow in December in Ulaanbaatar?

In Ulaanbaatar, Mongolia, during December, snow falls for 10 days.

When does it snow the most in Ulaanbaatar?

The month with the most snowfall days in Ulaanbaatar is December when snow falls for 10 days.

What is the month with the shortest days in Ulaanbaatar?

With an average of 8.5h of daylight, December has the shortest days of the year in Ulaanbaatar, Mongolia.

What is the average length of the day in December in Ulaanbaatar?

The average length of the day in December in Ulaanbaatar, Mongolia, is 8.5h.

What is the month with the least sunshine in Ulaanbaatar?

December has the least sunshine of the year in Ulaanbaatar, with an average of 5h of sunshine.

How many hours of sunshine does Ulaanbaatar have in December?

In Ulaanbaatar, the average sunshine in December is 5h.

What are the months with the lowest UV index in Ulaanbaatar?

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Ulaanbaatar.

What is the UV index reading in December in Ulaanbaatar?

In Ulaanbaatar, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV rays.
Average temperature in December - Ulaanbaatar, Mongolia
  • Average high temperature in December: -13.5°C

The warmest month (with the highest average high temperature) is July (24.5°C).
The month with the lowest average high temperature is January (-15.6°C).

  • Average low temperature in December: 0°C

Months with the highest average low temperature are January, February, March, April, May, June, July, August, September, October, November and December (0°C).
Coldest months (with the lowest average low temperature) are January, February, March, April, May, June, July, August, September, October, November and December (0°C).

Average humidity in December - Ulaanbaatar, Mongolia
  • Average humidity in December: 78%

Months with the highest relative humidity are January and December (78%).
The month with the lowest relative humidity is May (46%).

Average rainfall in December - Ulaanbaatar, Mongolia
  • Average rainfall in December: 4mm

The wettest month (with the highest rainfall) is August (70mm).
The driest month (with the lowest rainfall) is January (2mm).

Average rainfall days in December - Ulaanbaatar, Mongolia
  • Average rainfall days in December: 0.2 days

The month with the highest number of rainy days is July (16 days).
The month with the lowest number of rainy days is February (0 days).

Average snowfall days in December - Ulaanbaatar, Mongolia
  • Average snowfall days in December: 10 days

The month with the highest number of snowfall days is December (10 days).
The month with the lowest number of snowfall days is July (0.2 days).

Average daylight in December / Average sunshine in December - Ulaanbaatar, Mongolia
  • Average daylight in December: 8.5h

The month with the longest days is June (Average daylight: 16h).
The month with shortest days is December (Average daylight: 8.5h).

  • Average sunshine in December: 5h

The month with most sunshine is May (Average sunshine: 9.7h).
The month with least sunshine is December (Average sunshine: 5h).

Average UV index in December - Ulaanbaatar, Mongolia
  • Average UV index in December: 1

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).