Yeonil weather in May

In May, Yeonil sees average daytime highs of 22°C and overnight lows near 13°C, with 84 mm of rain across 7.6 wet days and about 13.9 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 24°C by the end. The sky is clear or mostly clear about 34% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 24 min at the start of May to 14 h 12 min by month's end. Set against the rest of the year, May is Yeonil's 8th-clearest and 9th-windiest month. For the whole year in context, see Yeonil's year-round climate.

Daytime high
22°
5th warmest
Overnight low
13°
8th coldest
Rainfall
84 mm
7.6 wet days
Daylight
13 h 54 min
5:22 AM – 7:16 PM
Cloud cover
58%
8th clearest
Wind
10 km/h
9th windiest
Solar energy
5.84 kWh/m²
Travel score
7.1
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 21°C in the first days to 24°C by the end.

A typical May day in Yeonil reaches about 22°C in the afternoon and slips back to 13°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 27°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12011
22111
32111
42112
52112
62112
72112
82112
92112
102213
112213
122213
132213
142213
152213
162213
172314
182314
192314
202314
212314
222314
232415
242415
252415
262415
272415
282415
292416
302416
312416

How May really feels in Yeonil

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.

Yeonil 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 / -2°274.41.29.80.2
Feb / -1°334.51.210.61.2
Mar12° / 6170.911.73.4
Apr18° / 747.2012.96.0
May22° / 13°847.6013.97.1
Jun25° / 18°1208.5014.46.7
Jul28° / 23°19513014.25.2
Aug29° / 23°20213.5013.45.0
Sep25° / 19°1549.8012.26.7
Oct20° / 12°625011.17.2
Nov14° / 395010.14.8
Dec / -0°243.70.59.61.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24852
34852
44753
54753
64654
74753
84654
94555
104654
114753
124753
134753
144852
154852
164852
174852
184951
195050
205050
215050
225050
235050
245050
255050
265050
274951
284852
294852
304852
314753

Chance of precipitation in May

Any precipitation

Yeonil gets around 84 mm of rain over 7.6 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 24% and peaks near 26% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
125
225
325
426
526
626
726
826
926
1025
1125
1225
1325
1425
1524
1624
1724
1824
1924
2024
2123
2223
2323
2423
2522
2622
2722
2822
2922
3021
3121

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 75% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
191810
290910
390910
4891010
5881110
6871210
7851311
8831421
9831421
10821521
11821521
12811621
13801721
14791821
15791821
16781921
17772030
18762130
19752230
20742330
21722440
22712540
23682750
24672850
25643060
26613270
27603370
28573580
295337100
305039110
314641131

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 24 min at the start of May to 14 h 12 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 5:37 AM to 5:13 AM, and sunset from 7:03 PM to 7:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:377:03
213.55:357:04
313.55:347:05
413.55:337:06
513.65:327:07
613.65:317:08
713.65:307:08
813.75:297:09
913.75:287:10
1013.75:277:11
1113.85:267:12
1213.85:257:13
1313.85:247:14
1413.85:247:14
1513.95:237:15
1613.95:227:16
1713.95:217:17
1814.05:207:18
1914.05:207:18
2014.05:197:19
2114.05:187:20
2214.15:187:21
2314.15:177:22
2414.15:167:22
2514.15:167:23
2614.15:157:24
2714.25:157:25
2814.25:147:25
2914.25:147:26
3014.25:137:27
3114.25:137:27

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.84 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.6 kWh/m² to a high of 5.84 kWh/m² in May across the year — May's 5.84 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.9Bright
205.9Bright
215.9Bright
226.0Bright
236.0Bright
246.0Intense
256.0Intense
266.0Intense
276.0Intense
286.0Intense
296.0Intense
306.0Intense
316.0Intense
Planning a trip in May

Hazard calendar for Yeonil

In seasonPeak

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

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

Yeonil'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 May a good time to visit Yeonil?

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

7.1
Sightseeing
2nd-best month of the year
5.2
Beach & pool
5th-best month of the year

May is one of the better times to visit Yeonil for general sightseeing.

What to pack for Yeonil in May

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

In May, Yeonil sees daytime highs around 22°C and nights near 13°C. Worth packing: light clothes and sun protection. About 8 days see rain.

light clothessun protection

Sea temperature near Yeonil in May

The nearest coast averages about 16°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 31 km away) is warmest in August at about 25°C and coldest in February near 12°C.

It's comfortable for a long swim from Jun 25 to Oct 28 — about 4.1 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb12Bracing
Mar13Bracing
Apr14Bracing
May16Cool
Jun19Cool
Jul22Refreshing
Aug25Warm
Sep24Refreshing
Oct21Refreshing
Nov18Cool
Dec16Cool

UV index in Yeonil in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Yeonil peaks around August 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. 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 highVery highModerateAug 16UV 9Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun6High
Jul8Very high
Aug10Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Moderate

Air quality in Yeonil 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 Yeonil is worst in March — around 66 µg/m³ PM2.5 (unhealthy), about 1.9× the cleanest month (August, 34 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorPoorMar 1865 µg/m³Aug 1535 µg/m³
PM2.5 (µg/m³)Level
Jan51Poor
Feb57Unhealthy
Mar66Unhealthy
Apr60Unhealthy
May55Poor
Jun47Poor
Jul37Poor
Aug34Moderate
Sep39Poor
Oct47Poor
Nov56Unhealthy
Dec47Poor
Location & terrain

Where is Yeonil?

Yeonil sits at 36.0°N, 129.3°E, 4 m above sea level, in South Korea. The nearest listed city is Pohang, 5.0 km away.

EisenHayangUlsanCheongsong gunGyeongsan-si

Topography around Yeonil

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

Within 3 km, the terrain around Yeonil has significant variations in elevation — a maximum elevation change of 253 m around an average of 47 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 644 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,200 m.

The land around Yeonil is covered by trees (49%) and artificial surfaces (27%) within 3 km, trees (56%) within 16 km, and trees (56%) and water (30%) within 80 km.

3 km
253 m
16 km
644 m
80 km
1,200 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Pohang 5.0 km · Heunghae 12 km · Gyeongju 20 km · Eisen 35 km · Hayang 46 km · Ulsan 52 km · Cheongsong gun 53 km · Gyeongsan-si 56 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 Yeonil (36.0045°, 129.3185°, elevation 4 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).