Geoje weather in January

In January, Geoje sees average daytime highs of 8°C and overnight lows near 4°C, with 42 mm of precipitation across 5.2 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 8°C through the month. The sky is clear or mostly clear about 46% 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 12 min by month's end. Set against the rest of the year, January is Geoje's 4th-clearest and 1st-windiest month. For the whole year in context, see Geoje's year-round climate.

Daytime high
12th warmest
Overnight low
1st coldest
Precipitation
42 mm
5.2 wet days
Daylight
9 h 54 min
7:37 AM – 5:32 PM
Cloud cover
48%
4th clearest
Wind
26 km/h
1st windiest
Solar energy
2.9 kWh/m²
Travel score
1.5
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 8°C through the month.

A typical January day in Geoje reaches about 8°C in the afternoon and slips back to 4°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 12°C. Set against its neighbours, January runs about 2°C cooler than December and about 1°C cooler than February.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
195
295
385
485
585
684
784
884
984
1084
1184
1284
1384
1484
1584
1684
1784
1884
1984
2084
2184
2284
2384
2484
2584
2684
2784
2884
2984
3084
3184

How January really feels in Geoje

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 30 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
30
wind chill below the day's low

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

Geoje 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 daysDaylight (hours)Travel score
Jan / 425.29.91.5
Feb / 515.610.72.0
Mar11° / 978.311.73.1
Apr14° / 12°1278.512.84.5
May17° / 16°132813.85.9
Jun20° / 19°1809.614.36.2
Jul24° / 23°24011.814.16.4
Aug26° / 25°18711.613.36.5
Sep24° / 22°173912.27.0
Oct20° / 18°785.211.17.3
Nov15° / 12°59610.25.3
Dec10° / 394.89.72.8

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17030
26931
36931
46832
56733
66634
76535
86436
96337
106238
116040
125941
135941
145842
155743
165743
175743
185644
195743
205743
215743
225743
235842
245743
255842
265941
275941
286040
296040
306139
316139

Chance of precipitation in January

Any precipitationSnow

Geoje gets around 42 mm of rain and snow over 5.2 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 17% and peaks near 18% on the wettest days, and about 0 day brings snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1141
2141
3141
4141
5151
6151
7151
8150
9160
10160
11160
12160
13170
14170
15170
16170
17170
18180
19181
20181
21181
22181
23181
24181
25181
26182
27182
28182
29182
30182
31172

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

Across January, daily wind ranges from about 26 km/h on the calmest days to 27 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
127breezy
227breezy
327breezy
427breezy
527breezy
627breezy
727breezy
827breezy
927breezy
1027breezy
1127breezy
1227breezy
1327breezy
1426breezy
1526breezy
1626breezy
1726breezy
1826breezy
1926breezy
2026breezy
2126breezy
2226breezy
2326breezy
2426breezy
2526breezy
2626breezy
2726breezy
2826breezy
2926breezy
3026breezy
3126breezy

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 42 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 30 minutes over January. Sunrise moves from 7:37 AM to 7:31 AM, and sunset from 5:19 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.77:375:19
29.77:385:20
39.77:385:21
49.77:385:21
59.77:385:22
69.77:385:23
79.87:385:24
89.87:385:25
99.87:385:25
109.87:385:26
119.87:385:27
129.87:385:28
139.87:385:29
149.97:385:30
159.97:385:31
169.97:375:32
179.97:375:32
189.97:375:33
1910.07:375:34
2010.07:365:35
2110.07:365:36
2210.07:365:37
2310.07:355:38
2410.17:355:39
2510.17:345:40
2610.17:345:41
2710.17:335:42
2810.27:335:43
2910.27:325:44
3010.27:325:45
3110.27:315:46

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.9 kWh/m².

For context, solar energy here swings from a low near 2.64 kWh/m² to a high of 5.93 kWh/m² in May across the year — January's 2.9 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.8Moderate
22.8Moderate
32.8Moderate
42.8Moderate
52.8Moderate
62.8Moderate
72.8Moderate
82.8Moderate
92.8Moderate
102.8Moderate
112.8Moderate
122.8Moderate
132.8Moderate
142.8Moderate
152.8Moderate
162.8Moderate
172.8Moderate
182.9Moderate
192.9Moderate
202.9Moderate
212.9Moderate
223.0Moderate
233.0Moderate
243.0Moderate
253.1Moderate
263.1Moderate
273.1Moderate
283.2Moderate
293.2Moderate
303.3Moderate
313.3Moderate
Planning a trip in January

Hazard calendar for Geoje

In seasonPeak

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

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

Geoje's rainy season runs April–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 Geoje?

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

1.5
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 Geoje.

What to pack for Geoje in January

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

In January, Geoje sees daytime highs around 8°C and nights near 4°C. Pack a warm layer. Worth having: a heavy coat and a windbreaker. About 5 days see rain.

a warm layera heavy coata windbreaker

Sea temperature near Geoje in January

The nearest coast averages about 15°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 17 km away) is warmest in August at about 26°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 17 to Nov 5 — about 4.7 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr15Bracing
May17Cool
Jun20Refreshing
Jul23Refreshing
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Geoje 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 Geoje peaks around August 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 highModerateAug 20UV 9Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Geoje 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 Geoje is worst in April — around 37 µg/m³ PM2.5 (poor), about 2.2× the cleanest month (September, 17 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1637 µg/m³Sep 2117 µg/m³
PM2.5 (µg/m³)Level
Jan23Moderate
Feb27Moderate
Mar35Poor
Apr37Poor
May35Poor
Jun27Moderate
Jul20Moderate
Aug19Moderate
Sep17Moderate
Oct17Moderate
Nov21Moderate
Dec19Moderate
Location & terrain

Where is Geoje?

Geoje sits at 34.8°N, 128.7°E, 11 m above sea level, in South Korea. The nearest listed city is Sinhyeon, 10 km away.

GoseongBusanChangwonKimhaeNaesŏ

Topography around Geoje

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

Within 3 km, the terrain around Geoje has significant variations in elevation — a maximum elevation change of 406 m around an average of 61 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 581 m; within 80 km, large variations in elevation — a maximum elevation change of 933 m.

The land around Geoje is covered by water (47%) and trees (43%) within 3 km, water (65%) and trees (28%) within 16 km, and water (62%) and trees (29%) within 80 km.

3 km
406 m
16 km
581 m
80 km
933 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Sinhyeon 10 km · Kyosai 11 km · Tongyeong 26 km · Goseong 39 km · Busan 44 km · Changwon 46 km · Kimhae 49 km · Naesŏ 51 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 Geoje (34.8138°, 128.7056°, elevation 11 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).