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Ulaanbaatar climate data

Best times to travel

The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.

Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.

Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.

Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.

Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.

for Ulaanbaatar, Mongolia
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Jan
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Feb
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Mar
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Apr
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May
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Jun
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Jul
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Aug
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Sep
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Oct
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Nov
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Dec
High season: June - Aug.
Shoulder season: May, Sep.
Crowdedness: 1 (Very few tourists)
Tap on a month for more info Hover over a month for more info
Naadam festival runs 11 to 13 July, with wrestling, archery and horse racing; book hotels and tours far ahead
Many ger camps and tours outside the city operate only from June to September
Winter temperatures drop below -30 °C (-22 °F) from December to February, with heavy coal smoke pollution from October to March
Average climate data for Ulaanbaatar, Mongolia
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Average maximum temperature (°C) -16 -10 -1 10 18 23 24 22 17 8 -5 -13 24
Average minimum temperature (°C) -26 -22 -14 -4 3 10 13 11 4 -5 -16 -23 -26
Average precipitation (mm) 2 3 4 10 21 46 64 69 27 10 6 4 267
Average rainfall days (days) 0 0 0 2 7 13 16 14 8 2 0 0 62
Average snowfall days (days) 8 7 7 7 3 0 0 1 2 6 8 10 59
Average relative humidity (%) 78 74 61 48 45 55 60 63 59 61 71 79 63
Average daily daylight hours (h) 8 10 11 13 15 16 15 14 12 10 9 8 12
Average daily sunshine hours (h) 5 7 8 8 9 9 8 8 8 7 5 5 7
Average UV index 1 2 3 5 6 8 8 7 5 3 1 1 4

Minimum and maximum temperatures in Ulaanbaatar

The warmest month, with the highest average maximum temperature, is July (24.4 °C). The month with the lowest average maximum temperature is January (-15.7 °C). Overall, the average maximum temperature over the whole year is 6.4 °C.

The month with the highest average minimum temperature is July (12.9 °C). The coldest month, with the lowest average minimum temperature, is January (-25.8 °C). Overall, the average minimum temperature over the whole year is -5.8 °C.

Rainfall amount in Ulaanbaatar

The wettest month, with the highest amount of precipitation, is August (69.5 mm). The driest month, with the least amount of precipitation, is January (2 mm). Over the whole year there are 266.9 mm of rainfall on average.

Rainfall days in Ulaanbaatar

The month with the most days of rain is July (16 days). The month with the fewest days of rain is January (0.1 days). Over the whole year there are 62.5 days of rain on average.

Snowfall days in Ulaanbaatar

The month with the most days of snowfall is December (10.1 days). The month with the fewest days of snowfall is July (0.2 days). Over the whole year there are 58.8 days of snowfall on average.

Relative humidity in Ulaanbaatar

The month with the highest average relative humidity is December (78.9 %). The month with the lowest average relative humidity is May (45 %). The overall average relative humidity over the whole year is 62.8 %.

Daylight hours and sunshine hours in Ulaanbaatar

The month with the longest days, so the most daylight, is June (Average daylight: 16 h). The month with the shortest days, so the least daylight, is December (Average daylight: 8 h). Over the whole year there are 11.8 h of daylight per day on average.

The month with the most sunshine per day is May (Average sunshine: 9.1 h). The month with the least sunshine per day is December (Average sunshine: 4.9 h). Over the whole year there are 7.3 h of sunlight per day on average.

UV index in Ulaanbaatar

The months with the highest average UV index are June and July (UV index: 8). The months with the lowest average UV index are January, November and December (UV index: 1). Over the whole year the average UV index is 4.2.

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