Gwangju weather in May

In May, Gwangju sees average daytime highs of 24°C and overnight lows near 12°C, with 99 mm of rain across 8.2 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 26°C by the end. The sky is clear or mostly clear about 35% 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 Gwangju's 6th-clearest and 6th-windiest month. For the whole year in context, see Gwangju's year-round climate.

Daytime high
24°
5th warmest
Overnight low
12°
8th coldest
Rainfall
99 mm
8.2 wet days
Daylight
13 h 48 min
5:33 AM – 7:24 PM
Cloud cover
58%
6th clearest
Wind
9 km/h
6th windiest
Solar energy
5.82 kWh/m²
Travel score
7.1
out of 10

Gwangju is metropolitan city in South Korea.

Air quality
Elevated
PM2.5 18 µg/m³ · 2020
Density
2,796/km²
people per km²
Founded
1986

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 26°C by the end.

A typical May day in Gwangju reaches about 24°C in the afternoon and slips back to 12°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 28°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1229
2229
32210
42210
52210
62210
72210
82311
92311
102311
112311
122311
132311
142311
152412
162412
172412
182412
192412
202412
212413
222513
232513
242513
252513
262513
272514
282614
292614
302614
312614

How May really feels in Gwangju

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.

Gwangju 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 / -4°295.23.19.90.0
Feb / -2°355.21.310.71.1
Mar13° / 637.60.911.73.7
Apr19° / 887.8012.96.3
May24° / 12°998.2013.87.1
Jun27° / 17°16410.4014.36.1
Jul29° / 22°25517.1014.14.4
Aug30° / 22°22615.5013.34.4
Sep26° / 17°1389.5012.26.6
Oct21° / 575011.17.4
Nov14° / 466.20.210.24.5
Dec / -2°305.11.89.71.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% 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 (%)
15149
25050
35050
44852
54852
64852
74753
84753
94654
104654
114555
124654
134654
144654
154654
164654
174654
184654
194654
204753
214852
224852
234852
244852
254951
264951
274852
284852
294852
304852
314753

Chance of precipitation in May

Any precipitation

Gwangju gets around 99 mm of rain over 8.2 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 27% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
228
328
428
529
629
729
829
929
1029
1129
1229
1329
1428
1528
1628
1727
1827
1926
2026
2126
2225
2325
2424
2524
2623
2723
2823
2923
3023
3123

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 (%)
1811351
2811351
3801451
4781561
5781561
6771661
7761761
8761761
9751861
10751861
11751861
12741961
13732061
14732061
15722161
16712261
17702361
18682471
19672571
20662671
21652681
22642781
23622891
24603091
255731102
265532112
275333122
285034142
294735152
304436172
314137193

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 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
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
228calm
238calm
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 5:48 AM to 5:25 AM, and sunset from 7:12 PM to 7:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:487:12
213.45:467:12
313.55:457:13
413.55:447:14
513.55:437:15
613.65:427:16
713.65:417:16
813.65:407:17
913.65:397:18
1013.75:387:19
1113.75:387:20
1213.75:377:21
1313.85:367:21
1413.85:357:22
1513.85:347:23
1613.85:337:24
1713.95:337:25
1813.95:327:25
1913.95:317:26
2013.95:307:27
2114.05:307:28
2214.05:297:28
2314.05:297:29
2414.05:287:30
2514.15:277:31
2614.15:277:31
2714.15:267:32
2814.15:267:33
2914.15:257:34
3014.25:257:34
3114.25:257:35

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.82 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.34 kWh/m² to a high of 5.82 kWh/m² in May across the year — May's 5.82 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
246.0Bright
256.0Bright
266.0Bright
276.0Bright
286.0Bright
296.0Bright
306.0Bright
316.0Bright
Planning a trip in May

Hazard calendar for Gwangju

In seasonPeak

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

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

Gwangju'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 Gwangju?

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
5.8
Beach & pool
4th-best month of the year

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

What to pack for Gwangju in May

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

In May, Gwangju sees daytime highs around 24°C and nights near 12°C. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

Sea temperature near Gwangju 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 55 km away) is warmest in August at about 25°C and coldest in February near 6°C.

It's comfortable for a long swim from Jun 26 to Oct 11 — about 3.6 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan8Bracing
Feb6Bracing
Mar7Bracing
Apr10Bracing
May14Bracing
Jun19Cool
Jul23Refreshing
Aug25Warm
Sep23Refreshing
Oct19Cool
Nov15Cool
Dec11Bracing

UV index in Gwangju 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 Gwangju peaks around July 12 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 highModerateJul 12UV 8Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar6High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug7Very high
Sep8Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Gwangju 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 Gwangju is worst in March — around 27 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (August, 13 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Gwangju's WHO annual average of 18 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1927 µg/m³Aug 1113 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb21Moderate
Mar27Moderate
Apr24Moderate
May20Moderate
Jun17Moderate
Jul13Moderate
Aug13Moderate
Sep15Moderate
Oct16Moderate
Nov17Moderate
Dec15Moderate
Location & terrain

Where is Gwangju?

Gwangju sits at 35.2°N, 126.9°E, 47 m above sea level, in South Korea. The nearest listed city is Masan, 8.0 km away.

Koch'angYeonggwangMuan

Topography around Gwangju

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

Within 3 km, the terrain around Gwangju has significant variations in elevation — a maximum elevation change of 345 m around an average of 69 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,170 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,875 m.

The land around Gwangju is covered by artificial surfaces (78%) and trees (20%) within 3 km, trees (54%), cropland (21%) and artificial surfaces (21%) within 16 km, and trees (52%), cropland (22%) and water (21%) within 80 km.

3 km
345 m
16 km
1,170 m
80 km
1,875 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Masan 8.0 km · Hwasun 12 km · Damyang 19 km · Jangseong 20 km · Naju 23 km · Koch'ang 37 km · Yeonggwang 39 km · Muan 44 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 Gwangju (35.1547°, 126.9156°, elevation 47 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).