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.

☀️ Summers

Warm

Highs near 28°C in July.

❄️ Winters

Bitterly cold

Lows near −23°C in January.

🌧️ Rain

Moderate rainfall

About 562 mm of rain a year.

Wettest in July

⛅ 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)

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 (m/s)	0.9	1.0	0.9	0.6	0.2	0.2	0.1	0.2	0.2	0.2	0.4	0.7

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 (m/s)	0.9	1.0	0.9	0.6	0.2	0.2

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 (m/s)	0.1	0.2	0.2	0.2	0.4	0.7

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.

How we build these numbers →