Wŏnsan, North Korea climate

Cwa Monsoon-influenced humid subtropical

Wŏnsan has a strongly seasonal cool-temperate climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is August with an average daily high near 27°C, while the coldest is January averaging around −6°C at night. Precipitation totals about 1254 mm a year and is strongly seasonal — July alone averages 303 mm while January barely receives 23 mm.

☀️ Summers

Warm

Highs near 27°C in August.

❄️ Winters

Cold

Lows near −6°C in January.

🌧️ Rain

Wet

About 1254 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)

Wŏnsan climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	2	4	10	16	21	24	27	27	23	19	11	5
Avg temp (°C)	−2	0	5	11	16	20	24	24	19	14	7	0
Avg low (°C)	−6	−4	1	6	11	16	20	21	15	9	2	−4
Precipitation (mm)	23	24	32	57	96	126	303	271	165	56	70	31

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	2	4	10	16	21	24
Avg temp (°C)	−2	0	5	11	16	20
Avg low (°C)	−6	−4	1	6	11	16
Precipitation (mm)	23	24	32	57	96	126

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	27	27	23	19	11	5
Avg temp (°C)	24	24	19	14	7	0
Avg low (°C)	20	21	15	9	2	−4
Precipitation (mm)	303	271	165	56	70	31

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	51	51	55	57	61	70	75	71	62	51	54	51
Relative humidity (%)	80	76	71	69	70	75	83	85	80	76	77	79
Wind speed (m/s)	3.3	3.1	2.8	2.5	2.0	1.5	1.7	1.7	1.8	2.2	2.7	3.2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	51	51	55	57	61	70
Relative humidity (%)	80	76	71	69	70	75
Wind speed (m/s)	3.3	3.1	2.8	2.5	2.0	1.5

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	75	71	62	51	54	51
Relative humidity (%)	83	85	80	76	77	79
Wind speed (m/s)	1.7	1.7	1.8	2.2	2.7	3.2

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Wonsan, a weather station, about 3 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 →