Sunch’ŏn climate

Name: Sunch’ŏn
Address: KP

Sunch’ŏn is warmest in August, with average highs of 28 °C, and coldest in January, when nights average -12 °C. July is the wettest month (341 mm) and January the driest (14 mm). Figures are 1991–2020 climate normals.

Across a full year Sunch’ŏn averages 1,230 mm of rain, 88 days above 25 °C and 135 days below freezing.

North Korea · population 437,000 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 28 °C
Coldest month January -12 °C
Driest month January 14 mm
Wettest month July 341 mm
Least cloud January 37 % cloud
Hottest on record August 35 °C
Coldest on record January -29 °C

What to expectSunch’ŏn through the year

Sunch’ŏn has a clear annual cycle: average daily highs run from -1.5 °C in January to 28 °C in August, a swing of 30 °C in mean temperature across the year.

Counted across a normal year, 88 days a year reach 25 °C, 12 of them reach 30 °C, 135 nights drop below freezing. The warmest reading in the 1991–2020 record is 35 °C, in August.

Rain is strongly seasonal. July averages 341 mm against 14 mm in January — 24 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	-1.5 °C	14 mm	37 %
February	2.5 °C	24 mm	40 %
March	8.8 °C	31 mm	47 %
April	15.9 °C	63 mm	50 %
May	21.6 °C	105 mm	55 %
June	25.8 °C	131 mm	65 %
July	27.5 °C	341 mm	76 %
August	27.8 °C	265 mm	68 %
September	23.9 °C	111 mm	54 %
October	17.2 °C	56 mm	43 %
November	8.3 °C	59 mm	46 %
December	0.4 °C	29 mm	39 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	-1.5 °C	-11.8 °C	-6.5 °C	8.3 °C	-29.1 °C	0	0	31
February	2.5 °C	-7.2 °C	-2.7 °C	14.9 °C	-21.4 °C	0	0	27
March	8.8 °C	-1.9 °C	3.0 °C	19.9 °C	-12.9 °C	0	0	24
April	15.9 °C	4.2 °C	9.7 °C	25.9 °C	-4.1 °C	0	0	4
May	21.6 °C	10.7 °C	15.9 °C	31.2 °C	3.7 °C	5	0	0
June	25.8 °C	16.5 °C	20.8 °C	32.7 °C	9.5 °C	19	2	0
July	27.5 °C	20.7 °C	23.7 °C	34.4 °C	13.7 °C	26	5	0
August	27.8 °C	20.6 °C	23.9 °C	35.3 °C	12.0 °C	27	5	0
September	23.9 °C	14.8 °C	19.1 °C	30.3 °C	4.8 °C	11	0	0
October	17.2 °C	7.2 °C	11.9 °C	27.4 °C	-3.6 °C	0	0	1
November	8.3 °C	-0.3 °C	3.7 °C	19.9 °C	-14.5 °C	0	0	17
December	0.4 °C	-8.2 °C	-3.9 °C	11.9 °C	-23.9 °C	0	0	30

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	14 mm	3	9.7 h/day	37 %	60 %	13 km/h
February	24 mm	4	11 h/day	40 %	58 %	15 km/h
March	31 mm	6	12 h/day	47 %	61 %	16 km/h
April	63 mm	8	13 h/day	50 %	65 %	17 km/h
May	105 mm	9	14 h/day	55 %	70 %	16 km/h
June	131 mm	12	15 h/day	65 %	75 %	14 km/h
July	341 mm	18	15 h/day	76 %	83 %	14 km/h
August	265 mm	15	14 h/day	68 %	82 %	13 km/h
September	111 mm	8	12 h/day	54 %	75 %	12 km/h
October	56 mm	6	11 h/day	43 %	70 %	13 km/h
November	59 mm	8	10 h/day	46 %	68 %	13 km/h
December	29 mm	6	9.4 h/day	39 %	61 %	13 km/h

How Sunch’ŏn compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Sunch’ŏn	28 °C	-12 °C	1,230 mm	88
Kaech’ŏn · North Korea	28 °C	-13 °C	1,290 mm	90
Tŏkch’ŏn · North Korea	27 °C	-15 °C	1,409 mm	75
Pyongyang · North Korea	28 °C	-9.9 °C	1,027 mm	96
Namp’o · North Korea	28 °C	-7.8 °C	954 mm	94
Sariwŏn-si · North Korea	28 °C	-8.3 °C	961 mm	99
Wŏnsan · North Korea	27 °C	-7.9 °C	1,274 mm	65

Planning a trip? See the best time to visit Sunch’ŏn.

QuestionsCommon questions about Sunch’ŏn’s climate

When is the best time to visit Sunch’ŏn?

That depends on what you want, so the honest answer is a comparison rather than a single month. June, July, September sit closest to 20 °C on average, August is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Sunch’ŏn get?

In August, the warmest month, daily highs average 28 °C. About 12 days a year pass 30 °C. The highest value in the 1991–2020 record is 35 °C.

How cold does it get in winter?

Nights average -12 °C in January, the coldest month. A normal year has 135 nights below freezing.

Which month is wettest in Sunch’ŏn?

July, averaging 341 mm over 18 days with rain. The driest month is January with 14 mm. The year as a whole averages 1,230 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Sunch’ŏn rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.