Kosong weather in April

In April, Kosong sees average daytime highs of 15°C and overnight lows near 7°C, with 66 mm of precipitation across 7.7 wet days and about 13 hours of daylight. It is the 7th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 12°C in the first days to 17°C by the end. The sky is clear or mostly clear about 42% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 30 min by month's end. Set against the rest of the year, April is Kosong's 7th-clearest and 4th-windiest month. For the whole year in context, see Kosong's year-round climate.

Daytime high
15°
7th warmest
Overnight low
6th coldest
Precipitation
66 mm
7.7 wet days
Daylight
13 hours
5:56 AM – 6:56 PM
Cloud cover
51%
7th clearest
Wind
13 km/h
4th windiest
Solar energy
5.48 kWh/m²
Travel score
4.7
out of 10

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 12°C in the first days to 17°C by the end.

A typical April day in Kosong reaches about 15°C in the afternoon and slips back to 7°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 19°C. Set against its neighbours, April runs about 6°C warmer than March and about 5°C cooler than May.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
1125
2125
3125
4125
5125
6136
7136
8136
9136
10136
11146
12147
13147
14147
15147
16157
17158
18158
19158
20158
21168
22169
23169
24169
25169
26179
27179
281710
291710
301710

How April really feels in Kosong

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

April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Kosong weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°486.559.60.0
Feb / -3°425.84.210.50.1
Mar / 537.63.211.71.9
Apr15° / 667.70.3134.7
May19° / 13°857.7014.16.6
Jun23° / 17°979.6014.66.7
Jul26° / 21°20613.7014.46.0
Aug26° / 22°21914.9013.55.8
Sep23° / 18°15910.7012.36.6
Oct18° / 12°807.10116.4
Nov12° / 748.20.79.93.2
Dec / -1°445.52.99.40.3

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 14% of April, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15644
25644
35644
45743
55743
65743
75743
85842
95842
105743
115743
125743
135743
145743
155743
165743
175644
185644
195644
205644
215743
225644
235644
245644
255644
265545
275545
285644
295545
305545

Chance of precipitation in April

Any precipitationSnow

Kosong gets around 66 mm of rain and snow over 7.7 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 25% and peaks near 27% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202530
Rain chance (%)Snow chance (%)
1244
2243
3243
4243
5243
6252
7252
8252
9252
10252
11251
12251
13261
14261
15261
16271
17271
18270
19270
20270
21270
22260
23260
24260
25260
26250
27250
28250
29240
30240

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
17991
18991
19991
20991
21991
22991
23991
24982
25982
26982
27973
28973
29973
30973

Wind in April

Winds average 13 km/h in April.

Across April, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over April. Sunrise moves from 6:20 AM to 5:37 AM, and sunset from 6:42 PM to 7:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:206:42
212.46:186:43
312.56:166:44
412.56:156:45
512.56:136:46
612.66:126:47
712.66:106:48
812.76:096:49
912.76:076:50
1012.76:066:50
1112.86:046:51
1212.86:026:52
1312.96:016:53
1412.95:596:54
1513.05:586:55
1613.05:566:56
1713.05:556:57
1813.15:546:58
1913.15:526:59
2013.25:517:00
2113.25:497:01
2213.25:487:02
2313.35:467:03
2413.35:457:04
2513.45:447:05
2613.45:427:06
2713.45:417:07
2813.55:407:08
2913.55:397:09
3013.55:377:10

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.48 kWh/m².

For context, solar energy here swings from a low near 2.32 kWh/m² to a high of 5.88 kWh/m² in May across the year — April's 5.48 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
Planning a trip in April

Hazard calendar for Kosong

In seasonPeak

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

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

Kosong's rainy season runs July–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 April a good time to visit Kosong?

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

4.7
Sightseeing
7th-best month of the year
0.4
Beach & pool
7th-best month of the year

April is a reasonable time to visit Kosong for sightseeing.

What to pack for Kosong in April

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

In April, Kosong sees daytime highs around 15°C and nights near 7°C. Worth packing: a warm layer and sun protection. About 8 days see rain.

a warm layersun protection

Sea temperature near Kosong in April

The nearest coast averages about 11°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 14 km away) is warmest in August at about 24°C and coldest in February near 8°C.

It's comfortable for a long swim from Jul 1 to Oct 3 — about 3.1 months when the water holds above 20°C.

10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan9Bracing
Feb8Bracing
Mar8Bracing
Apr11Bracing
May14Bracing
Jun18Cool
Jul22Refreshing
Aug24Warm
Sep22Refreshing
Oct19Cool
Nov15Cool
Dec12Bracing

UV index in Kosong in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kosong peaks around August 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateLowAug 17UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May6High
Jun7Very high
Jul7Very high
Aug9Very high
Sep8Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Kosong in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Kosong is worst in March — around 46 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (September, 19 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateMar 2046 µg/m³Sep 1120 µg/m³
PM2.5 (µg/m³)Level
Jan35Poor
Feb38Poor
Mar46Poor
Apr43Poor
May36Poor
Jun29Moderate
Jul23Moderate
Aug21Moderate
Sep19Moderate
Oct26Moderate
Nov31Moderate
Dec30Moderate
Location & terrain

Where is Kosong?

Kosong sits at 38.4°N, 128.5°E, 17 m above sea level, in South Korea. The nearest listed city is Sokcho, 22 km away.

YangguJumunjinHwacheonGangneungHoeyangChuncheon

Topography around Kosong

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

Within 3 km, the terrain around Kosong has significant variations in elevation — a maximum elevation change of 294 m around an average of 40 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,313 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,646 m.

The land around Kosong is covered by trees (51%) and cropland (23%) within 3 km, trees (50%) and water (41%) within 16 km, and trees (58%) and water (33%) within 80 km.

3 km
294 m
16 km
1,313 m
80 km
1,646 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Sokcho 22 km · Yanggu 52 km · Jumunjin 63 km · Hwacheon 73 km · Gangneung 78 km · T’ongch’ŏn-ŭp 81 km · Hoeyang 84 km · Chuncheon 85 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 Kosong (38.3788°, 128.4676°, elevation 17 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).