Chinju climate

Name: Chinju
Address: KR

Chinju is warmest in August, with average highs of 29 °C, and coldest in January, when nights average -3.7 °C. August is the wettest month (281 mm) and December the driest (28 mm). Figures are 1991–2020 climate normals.

Across a full year Chinju averages 1,432 mm of rain, 105 days above 25 °C and 92 days below freezing.

South Korea · population 307,242 · 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 29 °C
Coldest month January -3.7 °C
Driest month December 28 mm
Wettest month August 281 mm
Least cloud December 40 % cloud
Hottest on record August 38 °C
Coldest on record January -17 °C

What to expectChinju through the year

Chinju has a clear annual cycle: average daily highs run from 5.8 °C in January to 29 °C in August, a swing of 25 °C in mean temperature across the year.

Counted across a normal year, 105 days a year reach 25 °C, 28 of them reach 30 °C, 92 nights drop below freezing. The warmest reading in the 1991–2020 record is 38 °C, in August.

Rain is strongly seasonal. August averages 281 mm against 28 mm in December — 10 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	5.8 °C	31 mm	46 %
February	8.3 °C	39 mm	48 %
March	12.9 °C	74 mm	53 %
April	18.6 °C	110 mm	55 %
May	23.4 °C	116 mm	59 %
June	26.4 °C	185 mm	72 %
July	28.5 °C	269 mm	75 %
August	29.2 °C	281 mm	68 %
September	25.4 °C	184 mm	60 %
October	20.5 °C	70 mm	44 %
November	13.9 °C	47 mm	42 %
December	7.6 °C	28 mm	40 %

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	5.8 °C	-3.7 °C	0.3 °C	15.7 °C	-17.2 °C	0	0	28
February	8.3 °C	-2.2 °C	2.4 °C	19.5 °C	-14.9 °C	0	0	22
March	12.9 °C	2.0 °C	7.0 °C	23.5 °C	-5.9 °C	0	0	10
April	18.6 °C	7.6 °C	12.7 °C	28.8 °C	-2.8 °C	1	0	1
May	23.4 °C	13.0 °C	17.8 °C	35.8 °C	4.6 °C	10	1	0
June	26.4 °C	17.8 °C	21.7 °C	34.5 °C	10.6 °C	21	3	0
July	28.5 °C	22.0 °C	24.8 °C	37.8 °C	14.4 °C	26	10	0
August	29.2 °C	22.4 °C	25.4 °C	38.3 °C	15.0 °C	28	13	0
September	25.4 °C	17.3 °C	21.0 °C	33.6 °C	8.5 °C	17	1	0
October	20.5 °C	10.3 °C	15.0 °C	28.4 °C	-0.7 °C	2	0	0
November	13.9 °C	3.5 °C	8.2 °C	24.3 °C	-6.0 °C	0	0	6
December	7.6 °C	-2.1 °C	2.0 °C	16.9 °C	-10.7 °C	0	0	25

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	31 mm	4	10 h/day	46 %	62 %	13 km/h
February	39 mm	5	11 h/day	48 %	61 %	13 km/h
March	74 mm	7	12 h/day	53 %	66 %	14 km/h
April	110 mm	8	13 h/day	55 %	68 %	14 km/h
May	116 mm	8	14 h/day	59 %	72 %	13 km/h
June	185 mm	11	15 h/day	72 %	79 %	13 km/h
July	269 mm	16	14 h/day	75 %	86 %	13 km/h
August	281 mm	17	13 h/day	68 %	84 %	12 km/h
September	184 mm	10	12 h/day	60 %	81 %	11 km/h
October	70 mm	5	11 h/day	44 %	74 %	11 km/h
November	47 mm	5	10 h/day	42 %	72 %	11 km/h
December	28 mm	3	9.8 h/day	40 %	66 %	12 km/h

How Chinju 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
Chinju	29 °C	-3.7 °C	1,432 mm	105
Gwangyang · South Korea	29 °C	-2.5 °C	1,527 mm	95
Changwon · South Korea	29 °C	-1.5 °C	1,323 mm	92
Suncheon · South Korea	29 °C	-2.2 °C	1,520 mm	106
Yeosu · South Korea	28 °C	-0.2 °C	1,406 mm	67
Geoje · South Korea	27 °C	1.6 °C	1,349 mm	52
Busan · South Korea	28 °C	-0.06 °C	1,329 mm	62

Planning a trip? See the best time to visit Chinju.

QuestionsCommon questions about Chinju’s climate

When is the best time to visit Chinju?

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 December the driest. The month-by-month table above has the full picture.

How hot does Chinju get?

In August, the warmest month, daily highs average 29 °C. About 28 days a year pass 30 °C. The highest value in the 1991–2020 record is 38 °C.

How cold does it get in winter?

Nights average -3.7 °C in January, the coldest month. A normal year has 92 nights below freezing.

Which month is wettest in Chinju?

August, averaging 281 mm over 17 days with rain. The driest month is December with 28 mm. The year as a whole averages 1,432 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 Chinju 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.