Naesŏ weather in December

In December, Naesŏ sees average daytime highs of 9°C and overnight lows near -1°C, with 25 mm of precipitation across 3.2 wet days and about 9.7 hours of daylight. It is the 11th-warmest and 12th-wettest month of the year here.

Highs ease over the month, from about 11°C in the first days to 8°C by the end. The sky is clear or mostly clear about 57% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 48 min at the start of December to 9 h 42 min by month's end. Set against the rest of the year, December is Naesŏ's 1st-clearest and 4th-windiest month. For the whole year in context, see Naesŏ's year-round climate.

Daytime high
11th warmest
Overnight low
-1°
3rd coldest
Precipitation
25 mm
3.2 wet days
Daylight
9 h 36 min
7:33 AM – 5:11 PM
Cloud cover
38%
1st clearest
Wind
10 km/h
4th windiest
Solar energy
2.68 kWh/m²
Travel score
2.3
out of 10

Naesŏ is human settlement in South Korea.

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 11°C in the first days to 8°C by the end.

A typical December day in Naesŏ reaches about 9°C in the afternoon and slips back to -1°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 14°C. Set against its neighbours, December runs about 6°C cooler than November and about 2°C warmer than January.

-10°10°20°151015202531
Avg high (°C)Avg low (°C)
1121
2111
3111
4110
5110
6100
7100
8100
9100
1010-1
119-1
129-1
139-1
149-1
159-1
169-1
179-1
189-1
199-1
209-2
218-2
228-2
238-2
248-2
258-2
268-2
278-2
288-2
298-2
308-2
318-2

How December really feels in Naesŏ

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.

Naesŏ weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°253.60.79.91.2
Feb10° / -1°354.30.410.72.4
Mar14° / 706.90.411.74.6
Apr20° / 977.7012.96.6
May24° / 13°1057.8013.87.2
Jun27° / 18°1529.4014.36.3
Jul29° / 23°22514.2014.14.7
Aug30° / 23°20214.3013.34.4
Sep27° / 18°1549.4012.26.5
Oct22° / 11°634.5011.17.7
Nov15° / 434.8010.15.5
Dec / -1°253.20.29.72.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in December, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 29%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16931
26931
36931
46931
57030
67030
77129
87129
97030
107030
117129
127129
137030
147030
157129
167030
177030
187129
197129
207129
217129
227129
237129
247228
257327
267327
277327
287327
297327
307327
317426

Chance of precipitation in December

Any precipitation

Naesŏ gets around 25 mm of rain and snow over 3.2 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 11% and peaks near 15% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
115
215
315
414
514
614
713
813
912
1012
1111
1211
1310
1410
1510
1610
179
189
199
209
219
229
239
248
258
268
278
288
298
308
318

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
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
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 48 min at the start of December to 9 h 42 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 7:22 AM to 7:39 AM, and sunset from 5:10 PM to 5:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.87:225:10
29.87:235:09
39.87:235:09
49.87:245:09
59.77:255:09
69.77:265:09
79.77:275:09
89.77:275:10
99.77:285:10
109.77:295:10
119.77:305:10
129.77:305:10
139.77:315:10
149.67:325:11
159.67:325:11
169.67:335:11
179.67:345:11
189.67:345:12
199.67:355:12
209.67:355:13
219.67:365:13
229.67:365:14
239.67:375:14
249.67:375:15
259.67:385:15
269.67:385:16
279.67:385:16
289.67:395:17
299.67:395:17
309.67:395:18
319.77:395:19

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.68 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.68 kWh/m² to a high of 5.84 kWh/m² in May across the year — December's 2.68 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.7Moderate
22.7Moderate
32.7Moderate
42.7Moderate
52.7Moderate
62.7Moderate
72.7Moderate
82.7Moderate
92.7Moderate
102.7Moderate
112.7Moderate
122.7Moderate
132.7Moderate
142.7Moderate
152.7Moderate
162.7Moderate
172.7Moderate
182.7Moderate
192.7Moderate
202.7Moderate
212.7Moderate
222.7Moderate
232.7Moderate
242.7Moderate
252.8Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in December

Hazard calendar for Naesŏ

In seasonPeak

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

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

Naesŏ's rainy season runs May–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 Naesŏ?

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

2.3
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 Naesŏ.

What to pack for Naesŏ in December

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

In December, Naesŏ sees daytime highs around 9°C and nights near -1°C. Pack a warm layer. About 3 days see rain.

a warm layer

Sea temperature near Naesŏ in December

The nearest coast averages about 17°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 53 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 Naesŏ 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 Naesŏ peaks around August 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 18UV 9Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Naesŏ 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 Naesŏ is worst in March — around 51 µg/m³ PM2.5 (poor), about 1.8× the cleanest month (August, 29 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorMar 2051 µg/m³Aug 1029 µg/m³
PM2.5 (µg/m³)Level
Jan38Poor
Feb43Poor
Mar51Poor
Apr49Poor
May43Poor
Jun38Poor
Jul29Moderate
Aug29Moderate
Sep33Moderate
Oct36Poor
Nov40Poor
Dec35Moderate
Location & terrain

Where is Naesŏ?

Naesŏ sits at 35.2°N, 128.5°E, 62 m above sea level, in South Korea. The nearest listed city is Changwon, 15 km away.

MiryangGoseongChinjuSinhyeonKyosai

Topography around Naesŏ

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

Within 3 km, the terrain around Naesŏ has significant variations in elevation — a maximum elevation change of 526 m around an average of 151 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 752 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,871 m.

The land around Naesŏ is covered by trees (75%) within 3 km, trees (66%) within 16 km, and trees (54%) and water (30%) within 80 km.

3 km
526 m
16 km
752 m
80 km
1,871 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Changwon 15 km · Changnyeong 33 km · Kimhae 33 km · Miryang 34 km · Goseong 35 km · Chinju 40 km · Sinhyeon 42 km · Kyosai 45 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 Naesŏ (35.2497°, 128.52°, elevation 62 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).