Jangheung weather in January

In January, Jangheung sees average daytime highs of 6°C and overnight lows near -3°C, with 29 mm of precipitation across 4.4 wet days and about 9.9 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 6°C through the month. The sky is clear or mostly clear about 28% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 42 min at the start of January to 10 h 18 min by month's end. Set against the rest of the year, January is Jangheung's 8th-clearest and 1st-windiest month. For the whole year in context, see Jangheung's year-round climate.

Daytime high
12th warmest
Overnight low
-3°
1st coldest
Precipitation
29 mm
4.4 wet days
Daylight
9 h 54 min
7:44 AM – 5:39 PM
Cloud cover
59%
8th clearest
Wind
13 km/h
1st windiest
Solar energy
2.71 kWh/m²
Travel score
0.2
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 6°C through the month.

A typical January day in Jangheung reaches about 6°C in the afternoon and slips back to -3°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 1°C and 10°C. Set against its neighbours, January runs about 2°C cooler than December and about 2°C cooler than February.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
16-2
26-2
36-2
46-2
56-2
66-2
76-2
86-2
96-2
106-2
116-2
125-3
135-3
145-3
155-3
165-3
175-3
185-3
195-3
205-3
215-3
225-3
235-3
245-3
255-3
265-3
275-3
285-3
296-3
306-3
316-3

How January really feels in Jangheung

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
wind chill below the day's low

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

Jangheung weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°294.41.29.90.2
Feb / -1°3850.810.71.4
Mar13° / 727.80.511.73.6
Apr18° / 1018012.86.1
May23° / 13°1148.1013.87.0
Jun25° / 18°17510.2014.36.4
Jul28° / 23°26816.1014.14.9
Aug29° / 23°23415.8013.34.6
Sep26° / 18°14610.3012.26.6
Oct21° / 12°614.8011.17.5
Nov14° / 485.5010.24.8
Dec / -1°293.90.59.71.5

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 20% of January, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35446
45347
55347
65248
75149
85050
95050
104951
114852
124852
134654
144654
154654
164555
174456
184456
194555
204555
214555
224555
234654
244654
254753
264852
274852
284852
294951
305050
315050

Chance of precipitation in January

Any precipitationSnow

Jangheung gets around 29 mm of rain and snow over 4.4 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 14% and peaks near 15% on the wettest days, and about 1 day brings snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1115
2115
3115
4115
5125
6125
7125
8134
9134
10144
11144
12144
13144
14154
15154
16154
17153
18153
19153
20153
21154
22154
23154
24153
25153
26153
27153
28153
29143
30143
31143

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 13 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 42 min at the start of January to 10 h 18 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 7:38 AM, and sunset from 5:27 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.77:445:27
29.77:445:28
39.77:455:28
49.77:455:29
59.77:455:30
69.87:455:31
79.87:455:31
89.87:455:32
99.87:455:33
109.87:455:34
119.87:455:35
129.87:455:35
139.97:455:36
149.97:455:37
159.97:445:38
169.97:445:39
179.97:445:40
1810.07:445:41
1910.07:445:42
2010.07:435:43
2110.07:435:44
2210.07:435:45
2310.17:425:46
2410.17:425:47
2510.17:415:48
2610.17:415:49
2710.27:405:49
2810.27:405:50
2910.27:395:51
3010.27:395:52
3110.37:385:53

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.71 kWh/m².

For context, solar energy here swings from a low near 2.47 kWh/m² to a high of 5.72 kWh/m² in May across the year — January's 2.71 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.6Moderate
22.6Moderate
32.6Moderate
42.6Moderate
52.6Moderate
62.6Moderate
72.6Moderate
82.6Moderate
92.6Moderate
102.6Moderate
112.6Moderate
122.6Moderate
132.6Moderate
142.6Moderate
152.6Moderate
162.7Moderate
172.7Moderate
182.7Moderate
192.7Moderate
202.8Moderate
212.8Moderate
222.8Moderate
232.8Moderate
242.9Moderate
252.9Moderate
262.9Moderate
273.0Moderate
283.0Moderate
293.0Moderate
303.1Moderate
313.1Moderate
Planning a trip in January

Hazard calendar for Jangheung

In seasonPeak

In January, Jangheung sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Jangheung sits in the Pacific typhoon belt; the season peaks July–October.

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

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

Is January a good time to visit Jangheung?

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

0.2
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 Jangheung.

What to pack for Jangheung in January

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

In January, Jangheung sees daytime highs around 6°C and nights near -3°C. Pack a warm layer. Worth having: a heavy coat. About 4 days see rain.

a warm layera heavy coat

Sea temperature near Jangheung in January

The nearest coast averages about 14°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 40 km away) is warmest in August at about 26°C and coldest in March near 12°C.

It's comfortable for a long swim from Jun 23 to Oct 19 — about 3.9 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar12Bracing
Apr13Bracing
May16Cool
Jun19Cool
Jul23Refreshing
Aug26Warm
Sep24Refreshing
Oct20Refreshing
Nov17Cool
Dec15Bracing

UV index in Jangheung 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 Jangheung peaks around July 14 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highHighModerateJul 14UV 8Dec 22UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar6High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug8Very high
Sep8Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Jangheung 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 Jangheung is worst in March — around 43 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (July, 18 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 1842 µg/m³Jul 2418 µg/m³
PM2.5 (µg/m³)Level
Jan31Moderate
Feb36Poor
Mar43Poor
Apr37Poor
May30Moderate
Jun25Moderate
Jul18Moderate
Aug18Moderate
Sep22Moderate
Oct24Moderate
Nov27Moderate
Dec26Moderate
Location & terrain

Where is Jangheung?

Jangheung sits at 34.7°N, 126.9°E, 28 m above sea level, in South Korea. The nearest listed city is Boseong, 19 km away.

NajuHwasunBeolgyoMokpoMasan

Topography around Jangheung

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

Within 3 km, the terrain around Jangheung has significant variations in elevation — a maximum elevation change of 365 m around an average of 67 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 772 m; within 80 km, large variations in elevation — a maximum elevation change of 1,195 m.

The land around Jangheung is covered by trees (45%) and cropland (32%) within 3 km, trees (65%) and cropland (21%) within 16 km, and water (43%) and trees (38%) within 80 km.

3 km
365 m
16 km
772 m
80 km
1,195 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Boseong 19 km · Yeongam 23 km · Haenam 31 km · Naju 42 km · Hwasun 43 km · Beolgyo 44 km · Mokpo 49 km · Masan 50 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 Jangheung (34.6816°, 126.9069°, elevation 28 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).