Undurkhaan, Mongolia climate

BSk Cold semi-arid

Undurkhaan has a strongly seasonal subarctic climate (Cold semi-arid, Köppen BSk). The hottest month is July with an average daily high near 27°C, while the coldest is January averaging around −30°C at night. Precipitation totals about 186 mm a year and is strongly seasonal — August alone averages 47 mm while February barely receives 1 mm.

☀️ Summers

Warm

Highs near 27°C in July.

❄️ Winters

Bitterly cold

Lows near −30°C in January.

🌧️ Rain

Very dry

About 186 mm of rain a year.

Wettest in August

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Undurkhaan climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	−16	−9	1	12	20	25	27	25	19	9	−4	−14
Avg temp (°C)	−23	−18	−8	3	11	17	20	18	11	1	−11	−21
Avg low (°C)	−30	−27	−17	−6	2	9	13	10	2	−7	−19	−27
Precipitation (mm)	2	1	3	5	14	39	42	47	16	10	3	4

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	−16	−9	1	12	20	25
Avg temp (°C)	−23	−18	−8	3	11	17
Avg low (°C)	−30	−27	−17	−6	2	9
Precipitation (mm)	2	1	3	5	14	39

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	27	25	19	9	−4	−14
Avg temp (°C)	20	18	11	1	−11	−21
Avg low (°C)	13	10	2	−7	−19	−27
Precipitation (mm)	42	47	16	10	3	4

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	45	47	55	59	61	66	66	59	52	51	54	53
Relative humidity (%)	82	74	57	43	41	45	53	55	54	58	69	81
Wind speed (m/s)	2.7	2.9	3.4	3.9	3.9	3.0	2.5	2.3	2.7	2.8	2.9	2.8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	45	47	55	59	61	66
Relative humidity (%)	82	74	57	43	41	45
Wind speed (m/s)	2.7	2.9	3.4	3.9	3.9	3.0

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	66	59	52	51	54	53
Relative humidity (%)	53	55	54	58	69	81
Wind speed (m/s)	2.5	2.3	2.7	2.8	2.9	2.8

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Underkhaan, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →