Yangsan weather in April

In April, Yangsan sees average daytime highs of 18°C and overnight lows near 9°C, with 111 mm of rain across 7.8 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 20°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 Yangsan's 7th-clearest and 5th-windiest month. For the whole year in context, see Yangsan's year-round climate.

Daytime high
18°
7th warmest
Overnight low
6th coldest
Rainfall
111 mm
7.8 wet days
Daylight
12 h 54 min
5:57 AM – 6:51 PM
Cloud cover
55%
7th clearest
Wind
12 km/h
5th windiest
Solar energy
5.51 kWh/m²
Travel score
6.2
out of 10

Yangsan is a city in South Gyeongsang Province, South Korea.

Density
740/km²
people per km²

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 16°C in the first days to 20°C by the end.

A typical April day in Yangsan reaches about 18°C in the afternoon and slips back to 9°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 22°C. Set against its neighbours, April runs about 5°C warmer than March and about 4°C cooler than May.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
1166
2166
3167
4177
5177
6177
7177
8177
9178
10188
11188
12188
13188
14189
15189
16199
17199
18199
19199
201910
211910
221910
232010
242010
252010
262011
272011
282011
292011
302111

How April really feels in Yangsan

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.

Yangsan 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 / -1°304.20.49.91.2
Feb / 414.60.510.72.3
Mar14° / 797.40.511.74.2
Apr18° / 1117.8012.96.2
May22° / 14°1187.9013.87.0
Jun25° / 18°1599.2014.36.7
Jul28° / 22°24213.9014.15.3
Aug29° / 23°21113.4013.35.0
Sep26° / 19°1639.6012.26.7
Oct21° / 13°714.7011.17.6
Nov15° / 4850.110.15.5
Dec / 283.60.39.72.4

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 12% of April, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15248
25149
35149
45248
55149
65149
75149
85149
95149
105149
115149
125050
135149
145050
155149
165149
175149
185248
195248
205248
215248
225248
235248
245149
255050
265050
275050
284951
294951
304852

Chance of precipitation in April

Any precipitation

Yangsan gets around 111 mm of rain over 7.8 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 26% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
124
224
324
424
524
624
724
824
924
1024
1124
1225
1325
1425
1526
1626
1726
1827
1927
2027
2127
2227
2327
2427
2527
2627
2727
2827
2927
3026

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
398200
498200
598200
697300
797300
897300
996310
1096310
1196310
1296310
1396310
1495410
1595410
1695410
1795410
1894510
1994510
2094510
2193610
2291720
2389821
2489821
2588921
26861031
27851131
28831241
29821341
30811441

Wind in April

Winds average 12 km/h in April.

Across April, daily wind ranges from about 12 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
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze

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 6:19 AM to 5:40 AM, and sunset from 6:39 PM to 7:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:196:39
212.46:176:39
312.46:166:40
412.46:146:41
512.56:136:42
612.56:116:43
712.66:106:43
812.66:086:44
912.66:076:45
1012.76:066:46
1112.76:046:47
1212.76:036:48
1312.86:016:48
1412.86:006:49
1512.95:596:50
1612.95:576:51
1712.95:566:52
1813.05:556:52
1913.05:536:53
2013.05:526:54
2113.15:516:55
2213.15:506:56
2313.15:486:57
2413.25:476:57
2513.25:466:58
2613.25:456:59
2713.35:437:00
2813.35:427:01
2913.35:417:02
3013.45:407:03

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.51 kWh/m².

For context, solar energy here swings from a low near 2.67 kWh/m² to a high of 5.9 kWh/m² in May across the year — April's 5.51 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
Planning a trip in April

Hazard calendar for Yangsan

In seasonPeak

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

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

Yangsan's rainy season runs April–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 Yangsan?

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

6.2
Sightseeing
5th-best month of the year
2.3
Beach & pool
7th-best month of the year

April is a reasonable time to visit Yangsan for sightseeing.

What to pack for Yangsan in April

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

In April, Yangsan sees daytime highs around 18°C and nights near 9°C. Worth packing: sun protection. About 8 days see rain.

sun protection

Sea temperature near Yangsan in April

The nearest coast averages about 15°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 26 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 7 — about 4.7 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr15Bracing
May17Cool
Jun20Refreshing
Jul23Refreshing
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Yangsan 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 Yangsan 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
Mar5High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep9Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Yangsan 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 Yangsan is worst in March — around 68 µg/m³ PM2.5 (unhealthy), about 1.6× the cleanest month (August, 42 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorPoorMar 2168 µg/m³Aug 1942 µg/m³
PM2.5 (µg/m³)Level
Jan52Poor
Feb58Unhealthy
Mar68Unhealthy
Apr66Unhealthy
May65Unhealthy
Jun55Poor
Jul46Poor
Aug42Poor
Sep44Poor
Oct50Poor
Nov58Unhealthy
Dec48Poor
Location & terrain

Where is Yangsan?

Yangsan sits at 35.3°N, 129.0°E, 6 m above sea level, in South Korea. The nearest listed city is Ungsang, 14 km away.

ChangwonNaesŏ

Topography around Yangsan

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

Within 3 km, the terrain around Yangsan has significant variations in elevation — a maximum elevation change of 492 m around an average of 100 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 946 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,204 m.

The land around Yangsan is covered by trees (54%) and artificial surfaces (36%) within 3 km, trees (74%) within 16 km, and trees (44%) and water (39%) within 80 km.

3 km
492 m
16 km
946 m
80 km
1,204 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Ungsang 14 km · Kimhae 18 km · Gijang 20 km · Busan 27 km · Miryang 31 km · Ulsan 34 km · Changwon 34 km · Naesŏ 48 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 Yangsan (35.342°, 129.0336°, elevation 6 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).