Masan weather in April

In April, Masan sees average daytime highs of 18°C and overnight lows near 7°C, with 86 mm of rain across 7.6 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 16°C in the first days to 21°C by the end. The sky is clear or mostly clear about 39% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of April to 13 h 24 min by month's end. Set against the rest of the year, April is Masan's 3rd-clearest and 5th-windiest month. For the whole year in context, see Masan's year-round climate.

Daytime high
18°
7th warmest
Overnight low
6th coldest
Rainfall
86 mm
7.6 wet days
Daylight
12 h 54 min
6:06 AM – 6:59 PM
Cloud cover
53%
3rd clearest
Wind
10 km/h
5th windiest
Solar energy
5.58 kWh/m²
Travel score
6.3
out of 10

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 16°C in the first days to 21°C by the end.

A typical April day in Masan reaches about 18°C in the afternoon and slips back to 7°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 23°C. Set against its neighbours, April runs about 6°C warmer than March and about 5°C cooler than May.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
1154
2164
3165
4165
5165
6175
7175
8175
9176
10176
11186
12186
13186
14187
15187
16197
17197
18197
19197
20198
21198
22208
23208
24208
25209
26209
27219
28219
29219
302110

How April really feels in Masan

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.

Masan weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°275.33.19.90.0
Feb / -2°345.31.410.71.0
Mar12° / 607.30.811.73.6
Apr18° / 867.6012.96.3
May23° / 12°978013.87.2
Jun27° / 18°16210.1014.36.3
Jul29° / 22°24316.2014.14.6
Aug30° / 23°22415.7013.34.3
Sep26° / 17°1459.8012.26.6
Oct21° / 11°554.5011.17.5
Nov14° / 466.30.210.24.6
Dec / -1°295.42.29.71.2

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% 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 46%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25545
35446
45545
55545
65446
75446
85446
95545
105545
115446
125446
135446
145446
155347
165446
175446
185446
195446
205545
215545
225446
235545
245545
255446
265347
275347
285347
295347
305149

Chance of precipitation in April

Any precipitation

Masan gets around 86 mm of rain over 7.6 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 25% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
123
223
323
424
524
624
724
825
925
1025
1125
1225
1325
1425
1525
1625
1725
1825
1925
2025
2125
2225
2325
2425
2526
2626
2726
2827
2927
3027

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 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
198200
298200
397300
497300
597300
697300
797300
897300
997300
1097300
1197300
1296400
1396400
1496400
1596400
1696400
1794510
1894510
1994510
2093610
2193610
2291720
2390820
2489920
2588930
26861031
27841141
28831241
29821251
30811351

Wind in April

Winds average 10 km/h in April.

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

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
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

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 18 min at the start of April to 13 h 24 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 6:27 AM to 5:49 AM, and sunset from 6:47 PM to 7:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:276:47
212.46:266:48
312.46:256:49
412.46:236:50
512.56:226:50
612.56:206:51
712.66:196:52
812.66:176:53
912.66:166:54
1012.76:156:55
1112.76:136:55
1212.76:126:56
1312.86:106:57
1412.86:096:58
1512.86:086:59
1612.96:066:59
1712.96:057:00
1813.06:047:01
1913.06:027:02
2013.06:017:03
2113.16:007:04
2213.15:597:04
2313.15:577:05
2413.25:567:06
2513.25:557:07
2613.25:547:08
2713.35:537:08
2813.35:517:09
2913.35:507:10
3013.45:497:11

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.58 kWh/m².

For context, solar energy here swings from a low near 2.27 kWh/m² to a high of 5.91 kWh/m² in May across the year — April's 5.58 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
Planning a trip in April

Hazard calendar for Masan

In seasonPeak

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

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

Masan'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 Masan?

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

6.3
Sightseeing
4th-best month of the year
2.4
Beach & pool
7th-best month of the year

April is a reasonable time to visit Masan for sightseeing.

What to pack for Masan in April

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

In April, Masan sees daytime highs around 18°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 Masan in April

The nearest coast averages about 10°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 50 km away) is warmest in August at about 25°C and coldest in February near 6°C.

It's comfortable for a long swim from Jun 26 to Oct 11 — about 3.6 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan8Bracing
Feb6Bracing
Mar7Bracing
Apr10Bracing
May14Bracing
Jun19Cool
Jul23Refreshing
Aug25Warm
Sep23Refreshing
Oct19Cool
Nov15Cool
Dec11Bracing

UV index in Masan 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 Masan peaks around July 12 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 23 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 highModerateJul 12UV 8Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar6High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug7Very high
Sep8Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Masan 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 Masan is worst in March — around 61 µg/m³ PM2.5 (unhealthy), about 2.1× the cleanest month (August, 28 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModeratePoorModerateMar 1960 µg/m³Aug 1129 µg/m³
PM2.5 (µg/m³)Level
Jan41Poor
Feb48Poor
Mar61Unhealthy
Apr54Poor
May45Poor
Jun39Poor
Jul29Moderate
Aug28Moderate
Sep33Moderate
Oct35Moderate
Nov38Poor
Dec34Moderate
Location & terrain

Where is Masan?

Masan sits at 35.1°N, 126.8°E, 18 m above sea level, in South Korea. The nearest listed city is Gwangju, 8.0 km away.

MuanKoch'ang

Topography around Masan

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

Within 3 km, the terrain around Masan has only modest variations in elevation — a maximum elevation change of 190 m around an average of 30 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,162 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,717 m.

The land around Masan is covered by artificial surfaces (35%), cropland (31%) and trees (23%) within 3 km, trees (47%), cropland (25%) and artificial surfaces (22%) within 16 km, and trees (48%), water (25%) and cropland (22%) within 80 km.

3 km
190 m
16 km
1,162 m
80 km
1,717 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Gwangju 8.0 km · Naju 15 km · Hwasun 16 km · Jangseong 19 km · Damyang 25 km · Yeonggwang 34 km · Muan 36 km · Koch'ang 36 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 Masan (35.1272°, 126.8315°, elevation 18 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).