Naesŏ weather in May

In May, Naesŏ sees average daytime highs of 24°C and overnight lows near 13°C, with 105 mm of rain across 7.8 wet days and about 13.8 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 23°C in the first days to 26°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 Naesŏ's 8th-clearest and 7th-windiest month. For the whole year in context, see Naesŏ's year-round climate.

Daytime high
24°
5th warmest
Overnight low
13°
8th coldest
Rainfall
105 mm
7.8 wet days
Daylight
13 h 48 min
5:27 AM – 7:18 PM
Cloud cover
58%
8th clearest
Wind
9 km/h
7th windiest
Solar energy
5.84 kWh/m²
Travel score
7.2
out of 10

Naesŏ 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 23°C in the first days to 26°C by the end.

A typical May day in Naesŏ reaches about 24°C in the afternoon and slips back to 13°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 28°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)
12211
22211
32311
42312
52312
62312
72312
82312
92312
102413
112413
122413
132413
142413
152413
162413
172413
182514
192514
202514
212514
222514
232514
242514
252515
262615
272615
282615
292615
302615
312616

How May really feels in Naesŏ

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.

Naesŏ 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 / -3°253.60.79.91.2
Feb10° / -1°354.30.410.72.4
Mar14° / 706.90.411.74.6
Apr20° / 977.7012.96.6
May24° / 13°1057.8013.87.2
Jun27° / 18°1529.4014.36.3
Jul29° / 23°22514.2014.14.7
Aug30° / 23°20214.3013.34.4
Sep27° / 18°1549.4012.26.5
Oct22° / 11°634.5011.17.7
Nov15° / 434.8010.15.5
Dec / -1°253.20.29.72.3

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 13% of May, with mostly cloudy or overcast conditions the remaining 54%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
24951
34951
44951
54753
64852
74753
84654
94654
104555
114654
124654
134555
144654
154555
164555
174654
184654
194654
204654
214654
224654
234654
244753
254753
264753
274654
284654
294654
304555
314456

Chance of precipitation in May

Any precipitation

Naesŏ gets around 105 mm of rain over 7.8 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 25% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
327
427
527
627
727
827
927
1027
1127
1227
1327
1426
1526
1626
1726
1825
1925
2025
2124
2224
2324
2424
2523
2623
2723
2823
2922
3022
3122

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 66% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1801451
2791461
3781561
4771661
5761761
6751771
7741871
8741871
9741871
10731971
11731971
12731971
13722071
14722071
15712171
16692281
17692281
18682381
19672481
20662491
21652591
226326101
236227101
246028111
255829112
265531122
275332132
285034142
294735152
304436163
314237183

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

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 5:41 AM to 5:18 AM, and sunset from 7:05 PM to 7:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:417:05
213.45:407:06
313.55:397:07
413.55:387:08
513.55:377:09
613.65:367:09
713.65:357:10
813.65:347:11
913.75:337:12
1013.75:327:13
1113.75:317:14
1213.75:307:14
1313.85:297:15
1413.85:287:16
1513.85:287:17
1613.85:277:18
1713.95:267:18
1813.95:257:19
1913.95:257:20
2013.95:247:21
2114.05:237:22
2214.05:237:22
2314.05:227:23
2414.05:217:24
2514.15:217:24
2614.15:207:25
2714.15:207:26
2814.15:197:27
2914.15:197:27
3014.25:187:28
3114.25:187:29

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 2.68 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
15.6Bright
25.6Bright
35.6Bright
45.6Bright
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
225.9Bright
236.0Bright
246.0Bright
256.0Bright
266.0Bright
276.0Intense
286.0Intense
296.0Intense
306.0Bright
316.0Bright
Planning a trip in May

Hazard calendar for Naesŏ

In seasonPeak

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

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

Naesŏ's rainy season runs May–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 Naesŏ?

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

7.2
Sightseeing
2nd-best month of the year
6.1
Beach & pool
4th-best month of the year

May is one of the better times to visit Naesŏ for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Naesŏ in May

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

In May, Naesŏ sees daytime highs around 24°C and nights near 13°C. Worth packing: light clothes and sun protection. About 8 days see rain.

light clothessun protection

Sea temperature near Naesŏ in May

The nearest coast averages about 17°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 53 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 5 — about 4.7 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr15Bracing
May17Cool
Jun20Refreshing
Jul23Refreshing
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Naesŏ in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Naesŏ 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
Mar6High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Naesŏ 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 Naesŏ is worst in March — around 51 µg/m³ PM2.5 (poor), about 1.8× the cleanest month (August, 29 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorMar 2051 µg/m³Aug 1029 µg/m³
PM2.5 (µg/m³)Level
Jan38Poor
Feb43Poor
Mar51Poor
Apr49Poor
May43Poor
Jun38Poor
Jul29Moderate
Aug29Moderate
Sep33Moderate
Oct36Poor
Nov40Poor
Dec35Moderate
Location & terrain

Where is Naesŏ?

Naesŏ sits at 35.2°N, 128.5°E, 62 m above sea level, in South Korea. The nearest listed city is Changwon, 15 km away.

MiryangGoseongChinjuSinhyeonKyosai

Topography around Naesŏ

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

Within 3 km, the terrain around Naesŏ has significant variations in elevation — a maximum elevation change of 526 m around an average of 151 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 752 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,871 m.

The land around Naesŏ is covered by trees (75%) within 3 km, trees (66%) within 16 km, and trees (54%) and water (30%) within 80 km.

3 km
526 m
16 km
752 m
80 km
1,871 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Changwon 15 km · Changnyeong 33 km · Kimhae 33 km · Miryang 34 km · Goseong 35 km · Chinju 40 km · Sinhyeon 42 km · Kyosai 45 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 Naesŏ (35.2497°, 128.52°, elevation 62 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).