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Bayanhongor, Mongolia climate
BWk Cold desert
Bayanhongor has a strongly seasonal subarctic climate (Cold desert, Köppen BWk). The hottest month is July with an average daily high near 25°C, while the coldest is January averaging around −24°C at night. Precipitation totals about 136 mm a year and is strongly seasonal — July alone averages 34 mm while January barely receives 2 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Bayanhongor climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | −11 | −6 | 1 | 10 | 17 | 23 | 25 | 23 | 17 | 8 | −2 | −10 |
| Avg temp (°C) | −18 | −14 | −6 | 3 | 9 | 16 | 18 | 16 | 10 | 1 | −9 | −16 |
| Avg low (°C) | −24 | −21 | −13 | −4 | 2 | 8 | 12 | 9 | 3 | −6 | −15 | −21 |
| Precipitation (mm) | 2 | 2 | 3 | 5 | 12 | 28 | 34 | 30 | 11 | 4 | 2 | 2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | −11 | −6 | 1 | 10 | 17 | 23 |
| Avg temp (°C) | −18 | −14 | −6 | 3 | 9 | 16 |
| Avg low (°C) | −24 | −21 | −13 | −4 | 2 | 8 |
| Precipitation (mm) | 2 | 2 | 3 | 5 | 12 | 28 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 23 | 17 | 8 | −2 | −10 |
| Avg temp (°C) | 18 | 16 | 10 | 1 | −9 | −16 |
| Avg low (°C) | 12 | 9 | 3 | −6 | −15 | −21 |
| Precipitation (mm) | 34 | 30 | 11 | 4 | 2 | 2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 37 | 42 | 55 | 60 | 62 | 67 | 67 | 60 | 51 | 46 | 43 | 41 |
| Relative humidity (%) | 70 | 62 | 47 | 37 | 35 | 40 | 46 | 48 | 45 | 49 | 61 | 69 |
| Wind speed (km/h) | 6.1 | 7.4 | 9.9 | 11.6 | 12.1 | 10.5 | 9.3 | 8.7 | 8.7 | 7.8 | 7.1 | 6.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 37 | 42 | 55 | 60 | 62 | 67 |
| Relative humidity (%) | 70 | 62 | 47 | 37 | 35 | 40 |
| Wind speed (km/h) | 6.1 | 7.4 | 9.9 | 11.6 | 12.1 | 10.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 67 | 60 | 51 | 46 | 43 | 41 |
| Relative humidity (%) | 46 | 48 | 45 | 49 | 61 | 69 |
| Wind speed (km/h) | 9.3 | 8.7 | 8.7 | 7.8 | 7.1 | 6.2 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Bayanhongor, a weather station, about 7 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.