Pyeongtaek weather in December

In December, Pyeongtaek sees average daytime highs of 5°C and overnight lows near -3°C, with 23 mm of precipitation across 5.2 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 7°C in the first days to 3°C by the end. The sky is clear or mostly clear about 37% 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 Pyeongtaek's 6th-clearest and 5th-windiest month. For the whole year in context, see Pyeongtaek's year-round climate.

Daytime high
11th warmest
Overnight low
-3°
3rd coldest
Precipitation
23 mm
5.2 wet days
Daylight
9 h 30 min
7:44 AM – 5:12 PM
Cloud cover
52%
6th clearest
Wind
10 km/h
5th windiest
Solar energy
2.28 kWh/m²
Travel score
0.3
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 7°C in the first days to 3°C by the end.

A typical December day in Pyeongtaek reaches about 5°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, December runs about 7°C cooler than November and about 2°C warmer than January.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
180
27-1
37-1
47-1
57-1
66-2
76-2
86-2
96-2
106-2
115-2
125-3
135-3
145-3
155-3
165-3
175-3
185-3
194-3
204-4
214-4
224-4
234-4
244-4
254-4
264-4
274-4
284-4
293-4
303-5
313-5

How December really feels in Pyeongtaek

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
wind chill below the day's low

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

Pyeongtaek 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 / -5°214.12.49.70.0
Feb / -4°274.21.510.60.4
Mar11° / 416.31.111.73.1
Apr18° / 687012.96.2
May24° / 13°847.20147.3
Jun27° / 18°1197.8014.56.6
Jul29° / 22°26015.6014.34.7
Aug29° / 23°23215.1013.44.7
Sep26° / 17°1277.8012.37.0
Oct20° / 10°555.10117.2
Nov12° / 466.80.3103.6
Dec / -3°235.21.89.50.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 20% of December, with mostly cloudy or overcast conditions the remaining 42%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35644
45644
55644
65644
75545
85644
95644
105644
115644
125644
135743
145743
155842
165842
175842
185941
195941
205941
215941
225941
235941
246040
256040
266040
275941
285941
295842
305842
315743

Chance of precipitation in December

Any precipitationSnow

Pyeongtaek gets around 23 mm of rain and snow over 5.2 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 17% and peaks near 22% on the wettest days, and about 2 days bring snow. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1224
2224
3214
4215
5215
6205
7205
8195
9195
10185
11185
12175
13165
14165
15155
16155
17155
18145
19145
20145
21146
22146
23146
24157
25157
26157
27158
28158
29158
30158
31159

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 10 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 7:32 AM to 7:50 AM, and sunset from 5:11 PM to 5:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.67:325:11
29.67:335:11
39.67:345:11
49.67:355:10
59.67:355:10
69.67:365:10
79.67:375:10
89.57:385:11
99.57:395:11
109.57:395:11
119.57:405:11
129.57:415:11
139.57:425:11
149.57:425:11
159.57:435:12
169.57:445:12
179.57:445:12
189.57:455:13
199.57:455:13
209.57:465:13
219.57:465:14
229.57:475:14
239.57:475:15
249.57:485:15
259.57:485:16
269.57:495:16
279.57:495:17
289.57:495:18
299.57:505:18
309.57:505:19
319.57:505:20

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.28 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.28 kWh/m² to a high of 5.87 kWh/m² in May across the year — December's 2.28 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.3Moderate
22.3Moderate
32.3Moderate
42.3Moderate
52.3Moderate
62.3Moderate
72.3Moderate
82.3Moderate
92.3Moderate
102.3Moderate
112.3Moderate
122.3Moderate
132.3Moderate
142.3Moderate
152.3Moderate
162.3Moderate
172.3Moderate
182.3Moderate
192.3Moderate
202.3Moderate
212.3Moderate
222.3Moderate
232.3Moderate
242.3Moderate
252.3Moderate
262.3Moderate
272.4Moderate
282.4Moderate
292.4Moderate
302.4Moderate
312.4Moderate
Planning a trip in December

Hazard calendar for Pyeongtaek

In seasonPeak

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

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

Pyeongtaek'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 December a good time to visit Pyeongtaek?

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

0.3
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 Pyeongtaek.

What to pack for Pyeongtaek in December

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

In December, Pyeongtaek sees daytime highs around 5°C and nights near -3°C. Pack a warm layer. Worth having: a heavy coat. About 5 days see rain.

a warm layera heavy coat

Sea temperature near Pyeongtaek in December

The nearest coast averages about 10°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 44 km away) is warmest in August at about 23°C and coldest in February near 4°C.

It's comfortable for a long swim from Jul 12 to Oct 14 — about 3.1 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan6Bracing
Feb4Bracing
Mar5Bracing
Apr8Bracing
May12Bracing
Jun16Cool
Jul21Refreshing
Aug23Refreshing
Sep23Refreshing
Oct20Cool
Nov15Cool
Dec10Bracing

UV index in Pyeongtaek 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 Pyeongtaek peaks around August 13 at about 8 (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 13UV 8Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May6High
Jun7High
Jul8Very high
Aug8Very high
Sep7Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Pyeongtaek 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 Pyeongtaek is worst in March — around 92 µg/m³ PM2.5 (unhealthy), about 2.0× the cleanest month (July, 46 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyMar 1391 µg/m³Jul 2246 µg/m³
PM2.5 (µg/m³)Level
Jan83Unhealthy
Feb85Unhealthy
Mar92Unhealthy
Apr75Unhealthy
May62Unhealthy
Jun57Unhealthy
Jul46Poor
Aug47Poor
Sep61Unhealthy
Oct74Unhealthy
Nov79Unhealthy
Dec73Unhealthy
Location & terrain

Where is Pyeongtaek?

Pyeongtaek sits at 37.0°N, 127.1°E, 14 m above sea level, in South Korea. The nearest listed city is Seonghwan, 10 km away.

Hwaseong-siChinch'ŏn

Topography around Pyeongtaek

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

Within 3 km, the terrain around Pyeongtaek has only modest variations in elevation — a maximum elevation change of 64 m around an average of 13 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 316 m; within 80 km, large variations in elevation — a maximum elevation change of 1,126 m.

The land around Pyeongtaek is covered by artificial surfaces (44%) and cropland (39%) within 3 km, cropland (39%), trees (25%) and artificial surfaces (25%) within 16 km, and trees (51%) within 80 km.

3 km
64 m
16 km
316 m
80 km
1,126 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Seonghwan 10 km · Anseong 16 km · Osan 18 km · Cheonan 22 km · Asan 25 km · Suwon 34 km · Hwaseong-si 34 km · Chinch'ŏn 35 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 Pyeongtaek (36.9947°, 127.0889°, elevation 14 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).