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Hyesan, North Korea climate
Dwb Monsoon-influenced warm-summer humid continental
Hyesan has a strongly seasonal cold-temperate climate (Monsoon-influenced warm-summer humid continental, Köppen Dwb). The hottest month is July with an average daily high near 28°C, while the coldest is January averaging around −23°C at night. Precipitation totals about 562 mm a year and is strongly seasonal — July alone averages 136 mm while January barely receives 6 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)Hyesan climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | −8 | −3 | 4 | 13 | 21 | 25 | 28 | 27 | 22 | 14 | 3 | −7 |
| Avg temp (°C) | −16 | −12 | −3 | 6 | 13 | 18 | 22 | 21 | 14 | 6 | −4 | −13 |
| Avg low (°C) | −23 | −20 | −11 | −2 | 5 | 11 | 15 | 15 | 7 | −2 | −11 | −20 |
| Precipitation (mm) | 6 | 9 | 13 | 33 | 58 | 87 | 136 | 116 | 47 | 26 | 21 | 10 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | −8 | −3 | 4 | 13 | 21 | 25 |
| Avg temp (°C) | −16 | −12 | −3 | 6 | 13 | 18 |
| Avg low (°C) | −23 | −20 | −11 | −2 | 5 | 11 |
| Precipitation (mm) | 6 | 9 | 13 | 33 | 58 | 87 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 27 | 22 | 14 | 3 | −7 |
| Avg temp (°C) | 22 | 21 | 14 | 6 | −4 | −13 |
| Avg low (°C) | 15 | 15 | 7 | −2 | −11 | −20 |
| Precipitation (mm) | 136 | 116 | 47 | 26 | 21 | 10 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 41 | 46 | 54 | 65 | 69 | 73 | 73 | 70 | 59 | 51 | 51 | 44 |
| Relative humidity (%) | 89 | 84 | 74 | 65 | 66 | 72 | 79 | 80 | 74 | 72 | 80 | 87 |
| Wind speed (km/h) | 3.1 | 3.4 | 3.3 | 2.1 | 0.8 | 0.6 | 0.5 | 0.5 | 0.8 | 0.9 | 1.4 | 2.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 41 | 46 | 54 | 65 | 69 | 73 |
| Relative humidity (%) | 89 | 84 | 74 | 65 | 66 | 72 |
| Wind speed (km/h) | 3.1 | 3.4 | 3.3 | 2.1 | 0.8 | 0.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 70 | 59 | 51 | 51 | 44 |
| Relative humidity (%) | 79 | 80 | 74 | 72 | 80 | 87 |
| Wind speed (km/h) | 0.5 | 0.5 | 0.8 | 0.9 | 1.4 | 2.5 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Hyesan, a weather station, inside the city. 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.