Changsu weather in January

In January, Changsu sees average daytime highs of 2°C and overnight lows near -6°C, with 31 mm of precipitation across 6.1 wet days and about 9.9 hours of daylight. It is the 12th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 2°C through the month. The sky is clear or mostly clear about 31% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 36 min at the start of January to 10 h 12 min by month's end. Set against the rest of the year, January is Changsu's 8th-clearest and 3rd-windiest month. For the whole year in context, see Changsu's year-round climate.

Daytime high
12th warmest
Overnight low
-6°
1st coldest
Precipitation
31 mm
6.1 wet days
Daylight
9 h 48 min
7:44 AM – 5:34 PM
Cloud cover
57%
8th clearest
Wind
9 km/h
3rd windiest
Solar energy
2.7 kWh/m²
Travel score
0.0
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 2°C through the month.

A typical January day in Changsu reaches about 2°C in the afternoon and slips back to -6°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between -3°C and 7°C. Set against its neighbours, January runs about 2°C cooler than December and about 3°C cooler than February.

-15°-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
13-5
23-6
33-6
43-6
53-6
63-6
72-6
82-6
92-6
102-6
112-6
122-6
132-6
142-6
152-6
162-6
172-6
182-6
192-6
202-6
212-6
222-6
232-6
242-6
252-6
262-6
272-6
283-6
293-6
303-6
313-6

How January really feels in Changsu

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
31
25 feel bitter (≤ -10°C)

The story in January is cold — wind chill drags the overnight "feels like" below the raw low.

Changsu weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -6°316.15.19.90.0
Feb / -4°395.63.210.70.3
Mar11° / 658.12.711.72.7
Apr17° / 898.40.412.95.6
May22° / 11°978.7013.96.9
Jun25° / 16°15511.4014.46.3
Jul27° / 21°25017.3014.25.0
Aug28° / 21°21116.7013.35.0
Sep24° / 16°1419.9012.26.7
Oct19° / 616.1011.16.8
Nov12° / 4870.510.13.3
Dec / -4°336.33.69.60.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 19% of January, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35446
45446
55347
65248
75050
85050
94852
104852
114753
124654
134555
144555
154555
164555
174555
184555
194555
204654
214852
224852
235050
245050
255149
265248
275248
285347
295446
305446
315644

Chance of precipitation in January

Any precipitationSnow

Changsu gets around 31 mm of rain and snow over 6.1 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 19% and peaks near 22% on the wettest days, and about 5 days bring snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
11915
21915
31815
41815
51815
61815
71815
81715
91715
101815
111815
121816
131916
141916
151917
162017
172017
182118
192118
202118
212218
222218
232218
242218
252217
262117
272116
282016
291915
301915
311814

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in January

Winds average 9 km/h in January.

Across January, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 36 min at the start of January to 10 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over January. Sunrise moves from 7:44 AM to 7:37 AM, and sunset from 5:22 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.67:445:22
29.67:455:23
39.67:455:23
49.77:455:24
59.77:455:25
69.77:455:26
79.77:455:26
89.77:455:27
99.77:455:28
109.77:455:29
119.77:455:30
129.87:455:31
139.87:455:32
149.87:455:32
159.87:445:33
169.87:445:34
179.97:445:35
189.97:445:36
199.97:435:37
209.97:435:38
219.97:435:39
2210.07:425:40
2310.07:425:41
2410.07:415:42
2510.07:415:43
2610.17:405:44
2710.17:405:45
2810.17:395:46
2910.17:395:47
3010.27:385:48
3110.27:375:49

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.7 kWh/m².

For context, solar energy here swings from a low near 2.4 kWh/m² to a high of 5.83 kWh/m² in May across the year — January's 2.7 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.5Moderate
22.5Moderate
32.5Moderate
42.5Moderate
52.5Moderate
62.5Moderate
72.5Moderate
82.5Moderate
92.6Moderate
102.6Moderate
112.6Moderate
122.6Moderate
132.6Moderate
142.6Moderate
152.6Moderate
162.6Moderate
172.7Moderate
182.7Moderate
192.7Moderate
202.8Moderate
212.8Moderate
222.8Moderate
232.8Moderate
242.9Moderate
252.9Moderate
263.0Moderate
273.0Moderate
283.0Moderate
293.1Moderate
303.1Moderate
313.1Moderate
Planning a trip in January

Hazard calendar for Changsu

In seasonPeak

None of Changsu's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Changsu's rainy season runs June–September, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Changsu?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.0
Sightseeing
12th-best month of the year
0.0
Beach & pool
10th-best month of the year

January is a weaker month for outdoor sightseeing in Changsu.

What to pack for Changsu in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Changsu sees daytime highs around 2°C and nights near -6°C. Pack a warm layer and a heavy coat. About 6 days see rain.

a warm layera heavy coat

UV index in Changsu in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Changsu peaks around August 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateAug 16UV 9Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar6High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Changsu in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Changsu is worst in March — around 69 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (July, 39 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyMar 1668 µg/m³Jul 2239 µg/m³
PM2.5 (µg/m³)Level
Jan57Unhealthy
Feb61Unhealthy
Mar69Unhealthy
Apr59Unhealthy
May52Poor
Jun49Poor
Jul39Poor
Aug40Poor
Sep51Poor
Oct58Unhealthy
Nov61Unhealthy
Dec54Poor
Location & terrain

Where is Changsu?

Changsu sits at 35.6°N, 127.5°E, 411 m above sea level, in South Korea. The nearest listed city is Jinan-gun, 18 km away.

JeonjuWanjuKuryeKinzanNamsa

Topography around Changsu

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Changsu.

Within 3 km, the terrain around Changsu has significant variations in elevation — a maximum elevation change of 588 m around an average of 527 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,136 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,879 m.

The land around Changsu is covered by trees (55%) and cropland (25%) within 3 km, trees (80%) within 16 km, and trees (74%) within 80 km.

3 km
588 m
16 km
1,136 m
80 km
1,879 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Jinan-gun 18 km · Imsil 22 km · Nangen 29 km · Jeonju 38 km · Wanju 40 km · Kurye 49 km · Kinzan 51 km · Namsa 53 km

South Korea travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
220 V · 60 Hz
Prices
≈ 57% of US
price level, 2025
GDP per capita
$36,227
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.5
per 100k, 2023
Road deaths
8.6
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 522
Religion
none 60%Protestant 17%Buddhist 16%Catholic 6%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Changsu (35.6484°, 127.5152°, elevation 411 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).