Wŏnju weather in December

In December, Wŏnju sees average daytime highs of 4°C and overnight lows near -5°C, with 28 mm of precipitation across 5.5 wet days and about 9.5 hours of daylight. It is the 11th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 6°C in the first days to 2°C by the end. The sky is clear or mostly clear about 49% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 36 min at the start of December to 9 h 30 min by month's end. Set against the rest of the year, December is Wŏnju's 1st-clearest and 6th-windiest month. For the whole year in context, see Wŏnju's year-round climate.

Daytime high
11th warmest
Overnight low
-5°
3rd coldest
Precipitation
28 mm
5.5 wet days
Daylight
9 h 24 min
7:41 AM – 5:08 PM
Cloud cover
43%
1st clearest
Wind
8 km/h
6th windiest
Solar energy
2.38 kWh/m²
Travel score
0.1
out of 10

Wŏnju is city in South Korea.

Density
384/km²
people per km²

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 6°C in the first days to 2°C by the end.

A typical December day in Wŏnju reaches about 4°C in the afternoon and slips back to -5°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between -2°C and 9°C. Set against its neighbours, December runs about 7°C cooler than November and about 2°C warmer than January.

-10°10°151015202531
Avg high (°C)Avg low (°C)
16-2
26-3
36-3
45-3
55-3
65-4
75-4
85-4
94-4
104-4
114-4
124-5
134-5
144-5
153-5
163-5
173-5
183-5
193-5
203-5
213-5
223-6
233-6
243-6
253-6
262-6
272-6
282-6
292-6
302-7
312-7

How December really feels in Wŏnju

Once humidity and wind are folded in, December 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
5 feel bitter (≤ -10°C)

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

Wŏnju weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -8°244.53.79.70.0
Feb / -5°334.62.910.60.2
Mar10° / -0°547.82.811.72.6
Apr17° / 888.10.212.95.7
May22° / 11°10290146.9
Jun26° / 16°1299.4014.56.6
Jul28° / 20°28617.4014.35.0
Aug28° / 21°22815.9013.45.1
Sep24° / 15°1318.7012.36.9
Oct19° / 585.80116.7
Nov11° / 477.20.7102.9
Dec / -5°285.53.19.50.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in December, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36139
46238
56238
66238
76337
86337
96238
106337
116337
126436
136436
146436
156535
166535
176535
186634
196634
206634
216634
226634
236733
246733
256733
266733
276733
286832
296733
306733
316733

Chance of precipitation in December

Any precipitationSnow

Wŏnju gets around 28 mm of rain and snow over 5.5 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 18% and peaks near 23% on the wettest days, and about 3 days bring snow. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1238
2238
3238
4239
5239
62210
72210
82210
92110
102110
112010
122010
131910
141910
151810
16189
17179
18169
19169
20169
21159
221510
231510
241510
251410
261411
271411
281511
291511
301511
311511

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December 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 December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 36 min at the start of December to 9 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 7:30 AM to 7:48 AM, and sunset from 5:06 PM to 5:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.67:305:06
29.67:305:06
39.67:315:06
49.67:325:06
59.57:335:06
69.57:345:06
79.57:355:06
89.57:365:06
99.57:365:06
109.57:375:06
119.57:385:06
129.57:395:07
139.57:395:07
149.57:405:07
159.47:415:07
169.47:415:08
179.47:425:08
189.47:425:08
199.47:435:09
209.47:435:09
219.47:445:09
229.47:445:10
239.47:455:10
249.47:455:11
259.47:465:11
269.47:465:12
279.47:465:13
289.47:475:13
299.47:475:14
309.57:475:14
319.57:485:15

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.38 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.38 kWh/m² to a high of 5.77 kWh/m² in May across the year — December's 2.38 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.4Moderate
22.4Moderate
32.4Moderate
42.4Moderate
52.4Moderate
62.4Moderate
72.4Moderate
82.4Moderate
92.4Moderate
102.4Moderate
112.4Moderate
122.4Moderate
132.4Moderate
142.4Moderate
152.4Moderate
162.4Moderate
172.4Moderate
182.4Moderate
192.4Moderate
202.4Moderate
212.4Moderate
222.4Moderate
232.4Moderate
242.4Moderate
252.4Moderate
262.4Moderate
272.5Moderate
282.5Moderate
292.5Moderate
302.5Moderate
312.5Moderate
Planning a trip in December

Hazard calendar for Wŏnju

In seasonPeak

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

Wŏnju'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 December a good time to visit Wŏnju?

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

0.1
Sightseeing
11th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Wŏnju.

What to pack for Wŏnju in December

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

In December, Wŏnju sees daytime highs around 4°C and nights near -5°C. Pack a warm layer and a heavy coat. About 6 days see rain.

a warm layera heavy coat

UV index in Wŏnju in December

LowModerateHighVery highExtreme

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

Under clear skies, the midday UV index in Wŏnju peaks around August 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateAug 14UV 9Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7High
Jun7Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Wŏnju in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Wŏnju is worst in March — around 57 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (August, 31 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorPoorModeratePoorMar 1856 µg/m³Aug 1731 µg/m³
PM2.5 (µg/m³)Level
Jan48Poor
Feb49Poor
Mar57Unhealthy
Apr51Poor
May46Poor
Jun41Poor
Jul33Moderate
Aug31Moderate
Sep32Moderate
Oct41Poor
Nov46Poor
Dec43Poor
Location & terrain

Where is Wŏnju?

Wŏnju sits at 37.4°N, 127.9°E, 133 m above sea level, in South Korea. The nearest listed city is Yeoju, 28 km away.

Hongch’ŏnPubalPyeongchangChungjuYangp'yŏngIcheon-siNeietsu

Topography around Wŏnju

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

Within 3 km, the terrain around Wŏnju has only modest variations in elevation — a maximum elevation change of 224 m around an average of 153 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,209 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,541 m.

The land around Wŏnju is covered by artificial surfaces (51%) and trees (33%) within 3 km, trees (78%) within 16 km, and trees (82%) within 80 km.

3 km
224 m
16 km
1,209 m
80 km
1,541 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Yeoju 28 km · Hongch’ŏn 38 km · Pubal 39 km · Pyeongchang 40 km · Chungju 42 km · Yangp'yŏng 43 km · Icheon-si 45 km · Neietsu 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 Wŏnju (37.3514°, 127.9453°, elevation 133 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).