Gangneung weather in April

In April, Gangneung sees average daytime highs of 15°C and overnight lows near 5°C, with 81 mm of precipitation across 8.8 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 7th-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 38% 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 Gangneung's 7th-clearest and 4th-windiest month. For the whole year in context, see Gangneung's year-round climate.

Daytime high
15°
7th warmest
Overnight low
6th coldest
Precipitation
81 mm
8.8 wet days
Daylight
13 hours
5:56 AM – 6:54 PM
Cloud cover
54%
7th clearest
Wind
11 km/h
4th windiest
Solar energy
5.5 kWh/m²
Travel score
4.6
out of 10

Gangneung is city in South Korea.

Density
200/km²
people per km²
Founded
~129 BCE

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

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 Gangneung reaches about 15°C in the afternoon and slips back to 5°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 20°C. Set against its neighbours, April runs about 7°C warmer than March and about 5°C cooler than May.

10°20°151015202530
Avg high (°C)Avg low (°C)
1112
2122
3122
4123
5123
6133
7133
8133
9134
10144
11144
12144
13145
14155
15155
16155
17155
18156
19166
20166
21166
22166
23167
24177
25177
26177
27178
28178
29178
30188

How April really feels in Gangneung

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 6 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
6
wind chill below the day's low

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

Gangneung weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -8°445.75.69.70.0
Feb / -7°445.7510.50.0
Mar / -1°689.15.911.71.4
Apr15° / 818.81.412.94.6
May20° / 11°878.90146.4
Jun23° / 16°11911.4014.66.4
Jul25° / 20°21915.9014.35.7
Aug26° / 20°22917.3013.55.5
Sep22° / 14°18612.2012.36.1
Oct17° / 828.50.1115.7
Nov10° / 637.51.8102.5
Dec / -5°365.33.89.40.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 15% of April, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15347
25446
35446
45446
55347
65347
75347
85347
95347
105446
115347
125347
135248
145248
155248
165248
175248
185347
195347
205347
215347
225347
235347
245347
255248
265248
275248
285248
295347
305248

Chance of precipitation in April

Any precipitationSnow

Gangneung gets around 81 mm of rain and snow over 8.8 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 30% and peaks near 30% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%151015202530
Rain chance (%)Snow chance (%)
12911
22910
32910
4299
5299
6299
7298
8298
9297
10297
11297
12306
13306
14306
15305
16305
17304
18304
19303
20303
21303
22302
23302
24302
25302
26301
27291
28291
29291
30291

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 (%)Humid (%)
110000
210000
310000
410000
510000
610000
710000
810000
910000
1010000
1110000
1210000
1310000
1410000
1510000
1610000
1710000
189910
199910
209910
219910
229910
239910
249910
259910
269721
279721
289721
299721
309721

Wind in April

Winds average 11 km/h in April.

Across April, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 6:18 AM to 5:37 AM, and sunset from 6:40 PM to 7:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:186:40
212.46:176:41
312.46:156:42
412.56:146:43
512.56:126:44
612.66:116:45
712.66:096:46
812.76:076:47
912.76:066:47
1012.76:046:48
1112.86:036:49
1212.86:016:50
1312.96:006:51
1412.95:586:52
1512.95:576:53
1613.05:566:54
1713.05:546:55
1813.15:536:56
1913.15:516:57
2013.15:506:58
2113.25:486:59
2213.25:477:00
2313.25:467:00
2413.35:447:01
2513.35:437:02
2613.45:427:03
2713.45:407:04
2813.45:397:05
2913.55:387:06
3013.55:377:07

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.5 kWh/m².

For context, solar energy here swings from a low near 2.42 kWh/m² to a high of 5.92 kWh/m² in May across the year — April's 5.5 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
Planning a trip in April

Hazard calendar for Gangneung

In seasonPeak

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

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

Gangneung'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 April a good time to visit Gangneung?

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

4.6
Sightseeing
7th-best month of the year
0.5
Beach & pool
7th-best month of the year

April is a reasonable time to visit Gangneung for sightseeing.

What to pack for Gangneung in April

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

In April, Gangneung sees daytime highs around 15°C and nights near 5°C. Worth packing: a warm layer, rain gear and sun protection. About 9 days see rain.

a warm layerrain gearsun protection

Sea temperature near Gangneung in April

The nearest coast averages about 12°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 9°C.

It's comfortable for a long swim from Jul 1 to Oct 7 — about 3.3 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan10Bracing
Feb9Bracing
Mar9Bracing
Apr12Bracing
May14Bracing
Jun18Cool
Jul22Refreshing
Aug24Warm
Sep22Refreshing
Oct19Cool
Nov16Cool
Dec13Bracing

UV index in Gangneung in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Gangneung peaks around August 16 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 highHighModerateAug 16UV 9Dec 20UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May7High
Jun8Very high
Jul8Very high
Aug10Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Gangneung 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 Gangneung is worst in March — around 40 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (September, 17 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 2239 µg/m³Sep 1817 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb30Moderate
Mar40Poor
Apr38Poor
May35Moderate
Jun30Moderate
Jul24Moderate
Aug21Moderate
Sep17Moderate
Oct20Moderate
Nov24Moderate
Dec22Moderate
Location & terrain

Where is Gangneung?

Gangneung sits at 37.8°N, 128.9°E, 77 m above sea level, in South Korea. The nearest listed city is Jumunjin, 16 km away.

SantyokuSokchoPyeongchangT’aebaekNeietsuKosong

Topography around Gangneung

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

Within 3 km, the terrain around Gangneung has only modest variations in elevation — a maximum elevation change of 163 m around an average of 48 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,166 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,646 m.

The land around Gangneung is covered by trees (46%) and artificial surfaces (36%) within 3 km, trees (59%) and water (26%) within 16 km, and trees (65%) and water (30%) within 80 km.

3 km
163 m
16 km
1,166 m
80 km
1,646 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Jumunjin 16 km · Donghae City 31 km · Santyoku 44 km · Sokcho 56 km · Pyeongchang 60 km · T’aebaek 65 km · Neietsu 73 km · Kosong 78 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 Gangneung (37.7527°, 128.8724°, elevation 77 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).