January weather forecast
Ulaanbaatar, Mongolia

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The valley city of Ulaanbaatar in Mongolia, with the distant view of the mountain ranges
The valley city of Ulaanbaatar in Mongolia, with the distant view of the mountain ranges

Weather in January

Ulaanbaatar ushers in the New Year with low temperatures, ranging from -25.9°C (-14.6°F) to -15.6°C (3.9°F), reflecting a bracing winter ambience. A blanket of snow covers the city as snowfall occupies eight days of the month. The city, bathed in the glow of 5.8 hours of daily sunshine, has only 8.9 daylight hours due to the scant daylight of winter. The dry air is pronounced with a relative humidity of 78%. Prolonged exposure to the biting cold and frosty weather necessitates warm and insulated clothing.

Temperature

Ulaanbaatar experiences its lowest average temperatures in January, reaching a peak of -15.6°C (3.9°F) and a minimum of -25.9°C (-14.6°F).

Humidity

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

Rainfall

January is the month with the least rainfall. Rain falls for 0.1 days and accumulates 2mm (0.08") of precipitation.

Snowfall

January through December are months with snowfall. In January, snow falls for 8 days. Throughout the year, there are 58.9 snowfall days.

Daylight

The average length of the day in January in Ulaanbaatar is 8h and 54min.
On the first day of the month, sunrise is at 08:41 and sunset at 17:09. On the last day of January, sunrise is at 08:21 and sunset at 17:49 +08.

Sunshine

In Ulaanbaatar, the average sunshine in January is 5.8h.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 1 during January leads to these instructions:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What time of the year is the coldest in Ulaanbaatar?

Ulaanbaatar's January weather reaches an average high of -15.6°C (3.9°F) and an average low of -25.9°C (-14.6°F), making it the coldest month.

How cold is January in Ulaanbaatar?

In January, the average high-temperature and low-temperature in Ulaanbaatar, Mongolia, are -15.6°C (3.9°F) and -25.9°C (-14.6°F) respectively.

What are the most humid months in Ulaanbaatar?

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

What is the average humidity in January in Ulaanbaatar?

In Ulaanbaatar, Mongolia, the average relative humidity in January is 78%.

What is the driest month in Ulaanbaatar?

January is the month with the least rainfall in Ulaanbaatar. Rain falls for 0.1 days and accumulates 2mm (0.08") of precipitation.

How many days does it rain in January in Ulaanbaatar?

In Ulaanbaatar, in January, during 0.1 rainfall days, 2mm (0.08") of precipitation is typically accumulated.

How many days does it snow in January in Ulaanbaatar?

In Ulaanbaatar, during January, snow falls for 8 days.

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

The average day length in January is 8h and 54min.

When are sunrise and sunset in January in Ulaanbaatar?

In January, on the first day of the month, sunrise is at 08:41 and sunset at 17:09. On the last day of the month, in Ulaanbaatar, sunrise is at 08:21 and sunset at 17:49 +08.

How long on average sun shines in January in Ulaanbaatar?

The average sunshine duration in January in Ulaanbaatar, Mongolia, is 5.8h.

When is 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, Mongolia.

What is the UV index intensity in January in Ulaanbaatar?

In Ulaanbaatar, the average daily maximum UV index in January is 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average UV index

Average temperature in January
Ulaanbaatar, Mongolia

Average temperature in January - Ulaanbaatar, Mongolia
  • Average high temperature in January: -15.6°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 January: -25.9°C

The month with the highest average low temperature is July (12.9°C).
The coldest month (with the lowest average low temperature) is January (-25.9°C).

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Average humidity in January
Ulaanbaatar, Mongolia

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

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

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Average rainfall in January
Ulaanbaatar, Mongolia

Average rainfall in January - Ulaanbaatar, Mongolia
  • Average rainfall in January: 2mm

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

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Average rainfall days in January
Ulaanbaatar, Mongolia

Average rainfall days in January - Ulaanbaatar, Mongolia
  • Average rainfall days in January: 0.1 days

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

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Average snowfall days in January
Ulaanbaatar, Mongolia

Average snowfall days in January - Ulaanbaatar, Mongolia
  • Average snowfall days in January: 8 days

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

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Average daylight in January /
Average sunshine in January
Ulaanbaatar, Mongolia

Average daylight in January / Average sunshine in January - Ulaanbaatar, Mongolia
  • Average daylight in January: 8h and 5min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in January: 5h and 5min

The month with the most sunshine is May (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average UV index in January
Ulaanbaatar, Mongolia

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

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

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Ulaanbaatar, Mongolia

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