Changwon weather in May

In May, Changwon sees average daytime highs of 23°C and overnight lows near 13°C, with 114 mm of rain across 8.1 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 22°C in the first days to 25°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 Changwon's 8th-clearest and 10th-windiest month. For the whole year in context, see Changwon's year-round climate.

Daytime high
23°
5th warmest
Overnight low
13°
8th coldest
Rainfall
114 mm
8.1 wet days
Daylight
13 h 48 min
5:26 AM – 7:17 PM
Cloud cover
58%
8th clearest
Wind
10 km/h
10th windiest
Solar energy
5.85 kWh/m²
Travel score
7.1
out of 10

Changwon is specific city in South Gyeongsang, South Korea.

Density
1,393/km²
people per km²
Founded
1408

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 22°C in the first days to 25°C by the end.

A typical May day in Changwon reaches about 23°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 27°C. Set against its neighbours, May runs about 4°C warmer than April and about 3°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12111
22211
32211
42212
52212
62212
72212
82212
92212
102313
112313
122313
132313
142313
152313
162313
172313
182314
192414
202414
212414
222414
232414
242414
252415
262415
272515
282515
292515
302515
312515

How May really feels in Changwon

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.

Changwon 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°283.90.69.91.1
Feb / -1°384.40.510.72.2
Mar14° / 757.20.511.74.3
Apr19° / 1077.9012.96.4
May23° / 13°1148.1013.87.1
Jun26° / 18°1619.4014.36.5
Jul28° / 22°24614.8014.15.0
Aug29° / 23°22014.6013.34.7
Sep26° / 18°1629.6012.26.7
Oct22° / 12°684.6011.17.6
Nov15° / 474.90.110.15.4
Dec / -0°263.50.39.72.2

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 53%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
24951
34951
44951
54951
64852
74852
84753
94753
104654
114654
124654
134654
144654
154654
164654
174654
184654
194654
204654
214654
224753
234753
244753
254753
264753
274753
284753
294753
304654
314654

Chance of precipitation in May

Any precipitation

Changwon gets around 114 mm of rain over 8.1 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 26% and peaks near 28% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
328
428
528
628
728
828
928
1028
1127
1227
1327
1427
1527
1627
1727
1827
1927
2026
2126
2226
2325
2425
2524
2624
2724
2823
2923
3023
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 67% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1821341
2801451
3791551
4781651
5771751
6771751
7751861
8751861
9741961
10741961
11731962
12722062
13732061
14722161
15712261
16702271
17692371
18682471
19662581
20662581
21642691
22632791
236128101
246029101
255830111
265531122
275233132
285034142
294835152
304537162
314238173

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 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
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
219calm
229calm
239calm
249calm
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 5:40 AM to 5:17 AM, and sunset from 7:05 PM to 7:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:407:05
213.45:397:05
313.55:387:06
413.55:377:07
513.55:367:08
613.65:357:09
713.65:347:10
813.65:337:10
913.75:327:11
1013.75:317:12
1113.75:307:13
1213.75:297:14
1313.85:297:14
1413.85:287:15
1513.85:277:16
1613.85:267:17
1713.95:257:18
1813.95:257:18
1913.95:247:19
2013.95:237:20
2114.05:237:21
2214.05:227:22
2314.05:217:22
2414.05:217:23
2514.15:207:24
2614.15:207:25
2714.15:197:25
2814.15:197:26
2914.15:187:27
3014.25:187:27
3114.25:177:28

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.85 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 5.85 kWh/m² in May across the year — May's 5.85 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
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
226.0Bright
236.0Bright
246.0Bright
256.0Intense
266.0Intense
276.0Intense
286.0Intense
296.0Intense
306.0Intense
316.0Intense
Planning a trip in May

Hazard calendar for Changwon

In seasonPeak

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

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

Changwon'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 Changwon?

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
5.6
Beach & pool
5th-best month of the year

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

What to pack for Changwon in May

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

In May, Changwon sees daytime highs around 23°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

Sea temperature near Changwon 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 42 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 Changwon 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 Changwon peaks around August 18 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 highModerateAug 18UV 9Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep9Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Changwon 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 Changwon 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 Changwon?

Changwon sits at 35.2°N, 128.7°E, 27 m above sea level, in South Korea. The nearest listed city is Naesŏ, 15 km away.

YangsanBusanChangnyeongSinhyeonKyosai

Topography around Changwon

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

Within 3 km, the terrain around Changwon has significant variations in elevation — a maximum elevation change of 505 m around an average of 58 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 789 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,204 m.

The land around Changwon is covered by artificial surfaces (60%) and trees (35%) within 3 km, trees (54%) and artificial surfaces (20%) within 16 km, and trees (47%) and water (37%) within 80 km.

3 km
505 m
16 km
789 m
80 km
1,204 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Naesŏ 15 km · Kimhae 18 km · Miryang 30 km · Yangsan 34 km · Busan 35 km · Changnyeong 39 km · Sinhyeon 39 km · Kyosai 43 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 Changwon (35.2281°, 128.6811°, elevation 27 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).