Yanggu weather in May

In May, Yanggu sees average daytime highs of 21°C and overnight lows near 10°C, with 97 mm of rain across 8.6 wet days and about 14 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 22°C by the end. The sky is clear or mostly clear about 36% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of May to 14 h 24 min by month's end. Set against the rest of the year, May is Yanggu's 8th-clearest and 4th-windiest month. For the whole year in context, see Yanggu's year-round climate.

Daytime high
21°
5th warmest
Overnight low
10°
8th coldest
Rainfall
97 mm
8.6 wet days
Daylight
14 h 06 min
5:23 AM – 7:26 PM
Cloud cover
56%
8th clearest
Wind
8 km/h
4th windiest
Solar energy
5.68 kWh/m²
Travel score
6.6
out of 10

Yanggu is human settlement in South Korea.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 19°C in the first days to 22°C by the end.

A typical May day in Yanggu reaches about 21°C in the afternoon and slips back to 10°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 25°C. Set against its neighbours, May runs about 5°C warmer than April and about 4°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1188
2198
3198
4198
5198
6199
7199
8199
9209
10209
11209
122010
132010
142010
152010
162010
172110
182110
192111
202111
212111
222111
232211
242211
252212
262212
272212
282212
292212
302312
312313

How May really feels in Yanggu

Once humidity and wind are folded in, May 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

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

Yanggu weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -10°234.54.39.70.0
Feb / -7°294.8410.50.0
Mar / -1°457.53.711.71.8
Apr15° / 788.40.8135.0
May21° / 10°978.60146.6
Jun24° / 15°10910.1014.66.7
Jul26° / 19°28517.6014.45.3
Aug27° / 20°23015.5013.55.6
Sep23° / 15°1218.4012.36.9
Oct17° / 525.80.1116.2
Nov / 477.41.29.92.1
Dec / -6°285.84.29.40.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25149
35149
45149
54951
64951
74951
84951
94951
104852
114951
124852
134852
144852
154852
164852
174753
184852
194852
204951
214951
225050
235050
245050
255050
265050
275050
285149
295050
305050
314951

Chance of precipitation in May

Any precipitation

Yanggu gets around 97 mm of rain over 8.6 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
530
630
730
830
930
1030
1130
1230
1330
1430
1530
1629
1729
1829
1928
2028
2127
2227
2327
2426
2526
2625
2725
2825
2925
3024
3124

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 86% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19631
29631
39541
49541
59541
69541
79451
89451
99550
109550
119460
129460
139460
149370
159280
169280
179091
1889101
1987121
2086131
2185141
2283152
2382162
2480182
2578193
2676213
2773234
2871254
2968275
3065296
3162317

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 9 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
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 36 min at the start of May to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 5:38 AM to 5:13 AM, and sunset from 7:12 PM to 7:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:387:12
213.65:377:13
313.65:367:14
413.75:357:15
513.75:347:16
613.75:337:17
713.85:317:18
813.85:307:19
913.85:297:20
1013.95:287:20
1113.95:277:21
1213.95:267:22
1314.05:257:23
1414.05:247:24
1514.05:247:25
1614.15:237:26
1714.15:227:27
1814.15:217:28
1914.15:207:29
2014.25:197:29
2114.25:197:30
2214.25:187:31
2314.25:177:32
2414.35:177:33
2514.35:167:34
2614.35:157:34
2714.35:157:35
2814.45:147:36
2914.45:147:37
3014.45:137:37
3114.45:137:38

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.68 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 5.68 kWh/m² in May across the year — May's 5.68 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in May

Hazard calendar for Yanggu

In seasonPeak

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

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

Yanggu's rainy season runs July–August, 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 May a good time to visit Yanggu?

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

6.6
Sightseeing
3rd-best month of the year
3.8
Beach & pool
5th-best month of the year

May is a reasonable time to visit Yanggu for sightseeing.

What to pack for Yanggu in May

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

In May, Yanggu sees daytime highs around 21°C and nights near 10°C. Worth packing: rain gear and sun protection. About 9 days see rain.

rain gearsun protection

Sea temperature near Yanggu in May

The nearest coast averages about 14°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 56 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 5 — about 3.2 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan10Bracing
Feb8Bracing
Mar9Bracing
Apr11Bracing
May14Bracing
Jun18Cool
Jul22Refreshing
Aug24Warm
Sep22Refreshing
Oct19Cool
Nov15Cool
Dec12Bracing

UV index in Yanggu in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Yanggu 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 highModerateAug 17UV 9Dec 20UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar4Moderate
Apr6High
May6High
Jun7Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Yanggu in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Yanggu 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 Yanggu?

Yanggu sits at 38.1°N, 128.0°E, 192 m above sea level, in South Korea. The nearest listed city is Hwacheon, 25 km away.

ChuncheonHongch’ŏnKosongGapyeongSokchoCheorwonHoeyang

Topography around Yanggu

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

Within 3 km, the terrain around Yanggu has significant variations in elevation — a maximum elevation change of 516 m around an average of 287 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,037 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,671 m.

The land around Yanggu is covered by trees (61%) within 3 km, trees (86%) within 16 km, and trees (74%) within 80 km.

3 km
516 m
16 km
1,037 m
80 km
1,671 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Hwacheon 25 km · Chuncheon 34 km · Hongch’ŏn 47 km · Kosong 52 km · Gapyeong 52 km · Sokcho 54 km · Cheorwon 68 km · Hoeyang 75 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 Yanggu (38.1058°, 127.9894°, elevation 192 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).