Sariwŏn-si climate

Name: Sariwŏn-si
Address: KP

Sariwŏn-si is warmest in August, with average highs of 28 °C, and coldest in January, when nights average -8.3 °C. July is the wettest month (254 mm) and January the driest (14 mm). Figures are 1991–2020 climate normals.

Across a full year Sariwŏn-si averages 961 mm of rain, 99 days above 25 °C and 123 days below freezing.

North Korea · population 310,100 · 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 -8.3 °C
Driest month January 14 mm
Wettest month July 254 mm
Least cloud February 44 % cloud
Hottest on record July 36 °C
Coldest on record January -24 °C

What to expectSariwŏn-si through the year

Sariwŏn-si has a clear annual cycle: average daily highs run from 0.2 °C in January to 28 °C in August, a swing of 29 °C in mean temperature across the year.

Counted across a normal year, 99 days a year reach 25 °C, 19 of them reach 30 °C, 123 nights drop below freezing. The warmest reading in the 1991–2020 record is 36 °C, in July.

Rain is strongly seasonal. July averages 254 mm against 14 mm in January — 18 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	0.2 °C	14 mm	47 %
February	3.5 °C	19 mm	44 %
March	9.4 °C	26 mm	46 %
April	16.5 °C	47 mm	49 %
May	22.4 °C	86 mm	54 %
June	26.7 °C	104 mm	63 %
July	28.2 °C	254 mm	74 %
August	28.4 °C	219 mm	66 %
September	24.4 °C	90 mm	56 %
October	18.1 °C	40 mm	45 %
November	9.6 °C	42 mm	49 %
December	2.3 °C	21 mm	48 %

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	0.2 °C	-8.3 °C	-4.2 °C	11.4 °C	-24.5 °C	0	0	31
February	3.5 °C	-5.6 °C	-1.4 °C	15.1 °C	-20.8 °C	0	0	27
March	9.4 °C	-1.0 °C	3.7 °C	19.9 °C	-9.2 °C	0	0	21
April	16.5 °C	5.2 °C	10.6 °C	26.8 °C	-3.3 °C	0	0	2
May	22.4 °C	11.5 °C	16.7 °C	33.3 °C	3.3 °C	7	0	0
June	26.7 °C	17.2 °C	21.6 °C	34.6 °C	9.7 °C	22	3	0
July	28.2 °C	21.3 °C	24.4 °C	36.0 °C	14.5 °C	27	7	0
August	28.4 °C	21.4 °C	24.6 °C	34.6 °C	12.9 °C	28	8	0
September	24.4 °C	15.7 °C	19.9 °C	31.0 °C	5.7 °C	13	0	0
October	18.1 °C	8.4 °C	13.0 °C	27.8 °C	-2.7 °C	1	0	0
November	9.6 °C	1.1 °C	5.1 °C	21.5 °C	-12.0 °C	0	0	13
December	2.3 °C	-5.6 °C	-1.9 °C	13.8 °C	-18.4 °C	0	0	29

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	14 mm	3	9.8 h/day	47 %	62 %	17 km/h
February	19 mm	4	11 h/day	44 %	60 %	18 km/h
March	26 mm	4	12 h/day	46 %	64 %	18 km/h
April	47 mm	7	13 h/day	49 %	65 %	18 km/h
May	86 mm	7	14 h/day	54 %	68 %	17 km/h
June	104 mm	10	15 h/day	63 %	73 %	15 km/h
July	254 mm	16	15 h/day	74 %	83 %	15 km/h
August	219 mm	14	14 h/day	66 %	82 %	14 km/h
September	90 mm	7	12 h/day	56 %	76 %	13 km/h
October	40 mm	5	11 h/day	45 %	70 %	15 km/h
November	42 mm	6	10 h/day	49 %	70 %	16 km/h
December	21 mm	4	9.5 h/day	48 %	65 %	17 km/h

How Sariwŏn-si 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
Sariwŏn-si	28 °C	-8.3 °C	961 mm	99
Namp’o · North Korea	28 °C	-7.8 °C	954 mm	94
Haeju · North Korea	27 °C	-6.5 °C	1,064 mm	68
Pyongyang · North Korea	28 °C	-9.9 °C	1,027 mm	96
Paech’ŏn-ŭp · North Korea	28 °C	-7.5 °C	1,140 mm	90
Kaesŏng · North Korea	29 °C	-7.7 °C	1,180 mm	96
Sunch’ŏn · North Korea	28 °C	-12 °C	1,230 mm	88

Planning a trip? See the best time to visit Sariwŏn-si.

QuestionsCommon questions about Sariwŏn-si’s climate

When is the best time to visit Sariwŏn-si?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, June, 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 Sariwŏn-si get?

In August, the warmest month, daily highs average 28 °C. About 19 days a year pass 30 °C. The highest value in the 1991–2020 record is 36 °C.

How cold does it get in winter?

Nights average -8.3 °C in January, the coldest month. A normal year has 123 nights below freezing.

Which month is wettest in Sariwŏn-si?

July, averaging 254 mm over 16 days with rain. The driest month is January with 14 mm. The year as a whole averages 961 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 Sariwŏn-si 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.