Daejeon weather in January

In January, Daejeon sees average daytime highs of 3°C and overnight lows near -5°C, with 24 mm of precipitation across 4.8 wet days and about 9.8 hours of daylight. It is the 12th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 3°C through the month. The sky is clear or mostly clear about 33% 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 06 min by month's end. Set against the rest of the year, January is Daejeon's 8th-clearest and 5th-windiest month. For the whole year in context, see Daejeon's year-round climate.

Daytime high
12th warmest
Overnight low
-5°
1st coldest
Precipitation
24 mm
4.8 wet days
Daylight
9 h 48 min
7:46 AM – 5:33 PM
Cloud cover
56%
8th clearest
Wind
9 km/h
5th windiest
Solar energy
2.65 kWh/m²
Travel score
0.0
out of 10

Daejeon is human settlement in South Korea.

Air quality
Elevated
PM2.5 18 µg/m³ · 2020

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 3°C through the month.

A typical January day in Daejeon reaches about 3°C in the afternoon and slips back to -5°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between -2°C and 8°C. Set against its neighbours, January runs about 2°C cooler than December and about 3°C cooler than February.

-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
14-4
24-4
34-5
44-5
54-5
63-5
73-5
83-5
93-5
103-5
113-5
123-5
133-5
143-5
153-5
163-5
173-5
183-5
193-5
203-5
213-5
223-5
233-5
243-5
253-5
264-5
274-5
284-5
294-5
304-5
314-5

How January really feels in Daejeon

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.

Daejeon 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 / -5°244.82.89.80.0
Feb / -3°324.71.810.60.7
Mar12° / 537.41.311.73.4
Apr19° / 787.70.212.96.3
May24° / 13°867.8013.97.2
Jun27° / 18°1238.9014.46.4
Jul29° / 22°23015.7014.24.7
Aug30° / 22°19715013.44.6
Sep26° / 17°1388.4012.26.9
Oct20° / 10°565.1011.17.3
Nov13° / 416.20.310.13.9
Dec / -3°2551.69.60.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 21% of January, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35743
45743
55644
65644
75545
85545
95446
105347
115248
125248
135149
145149
155149
165149
175149
185149
195149
205149
215149
225248
235248
245347
255446
265545
275545
285644
295743
305644
315644

Chance of precipitation in January

Any precipitationSnow

Daejeon gets around 24 mm of rain and snow over 4.8 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 15% and peaks near 18% on the wettest days, and about 3 days bring snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1148
2148
3149
4139
5138
6138
7138
8138
9138
10148
11148
12158
13158
14158
15168
16168
17179
18179
19179
20189
21189
22189
23189
24189
25189
26179
27179
28169
29169
30159
31158

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 06 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 7:47 AM to 7:39 AM, and sunset from 5:20 PM to 5:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.67:475:20
29.67:475:21
39.67:475:22
49.67:475:23
59.67:475:23
69.67:475:24
79.67:475:25
89.67:475:26
99.77:475:27
109.77:475:28
119.77:475:28
129.77:475:29
139.77:475:30
149.77:475:31
159.87:475:32
169.87:465:33
179.87:465:34
189.87:465:35
199.87:465:36
209.97:455:37
219.97:455:38
229.97:445:39
239.97:445:40
2410.07:445:41
2510.07:435:42
2610.07:435:43
2710.07:425:44
2810.17:415:45
2910.17:415:46
3010.17:405:47
3110.17:395:48

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.65 kWh/m².

For context, solar energy here swings from a low near 2.34 kWh/m² to a high of 5.88 kWh/m² in May across the year — January's 2.65 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
92.5Moderate
102.5Moderate
112.5Moderate
122.5Moderate
132.5Moderate
142.6Moderate
152.6Moderate
162.6Moderate
172.6Moderate
182.6Moderate
192.7Moderate
202.7Moderate
212.7Moderate
222.8Moderate
232.8Moderate
242.8Moderate
252.9Moderate
262.9Moderate
273.0Moderate
283.0Moderate
293.0Moderate
303.1Moderate
313.1Moderate
Planning a trip in January

Hazard calendar for Daejeon

In seasonPeak

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

Daejeon'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 Daejeon?

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 Daejeon.

What to pack for Daejeon in January

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

In January, Daejeon sees daytime highs around 3°C and nights near -5°C. Pack a warm layer and a heavy coat. About 5 days see rain.

a warm layera heavy coat

UV index in Daejeon 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 Daejeon peaks around August 14 at about 8 (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 highHighModerateAug 14UV 8Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5Moderate
Apr6High
May7High
Jun7Very high
Jul8Very high
Aug8Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Daejeon 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 Daejeon is worst in March — around 23 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 13 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Daejeon's WHO annual average of 18 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1623 µg/m³Jul 2213 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb20Moderate
Mar23Moderate
Apr20Moderate
May17Moderate
Jun16Moderate
Jul13Moderate
Aug13Moderate
Sep17Moderate
Oct19Moderate
Nov20Moderate
Dec18Moderate
Location & terrain

Where is Daejeon?

Daejeon sits at 36.3°N, 127.4°E, 58 m above sea level, in South Korea. The nearest listed city is Okcheon, 17 km away.

YŏnmuYeongdong

Topography around Daejeon

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

Within 3 km, the terrain around Daejeon has only modest variations in elevation — a maximum elevation change of 155 m around an average of 58 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 808 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,594 m.

The land around Daejeon is covered by artificial surfaces (69%) within 3 km, trees (67%) within 16 km, and trees (67%) and cropland (22%) within 80 km.

3 km
155 m
16 km
808 m
80 km
1,594 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Okcheon 17 km · Gongju 26 km · Sejong 28 km · Kinzan 29 km · Nonsan 31 km · Cheongju-si 33 km · Yŏnmu 35 km · Yeongdong 40 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 Daejeon (36.3491°, 127.3849°, elevation 58 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).