Seogwipo weather in May

In May, Seogwipo sees average daytime highs of 20°C and overnight lows near 15°C, with 132 mm of rain across 9.3 wet days and about 13.7 hours of daylight. It is the 6th-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 31% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of May to 14 hours by month's end. Set against the rest of the year, May is Seogwipo's 5th-clearest and 11th-windiest month. For the whole year in context, see Seogwipo's year-round climate.

Daytime high
20°
6th warmest
Overnight low
15°
7th coldest
Rainfall
132 mm
9.3 wet days
Daylight
13 h 42 min
5:39 AM – 7:21 PM
Cloud cover
61%
5th clearest
Wind
11 km/h
11th windiest
Solar energy
5.69 kWh/m²
Travel score
6.4
out of 10

Seogwipo is city in Jeju-do, South Korea.

Density
205/km²
people per km²

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 Seogwipo reaches about 20°C in the afternoon and slips back to 15°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 22°C. Set against its neighbours, May runs about 4°C warmer than April and about 3°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11813
21813
31913
41913
51913
61914
71914
81914
91914
101914
112014
122014
132014
142015
152015
162015
172015
182015
192115
202115
212116
222116
232116
242116
252116
262116
272216
282217
292217
302217
312217

How May really feels in Seogwipo

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.

Seogwipo weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 568.32.3101.2
Feb / 607.91.510.81.7
Mar12° / 999.80.311.73.1
Apr16° / 11°1219012.85.1
May20° / 15°1329.3013.76.4
Jun24° / 19°22913014.26.1
Jul27° / 23°22715.90145.3
Aug28° / 25°22517.1013.24.8
Sep25° / 21°18312.4012.26.4
Oct21° / 16°866.5011.27.1
Nov16° / 11°657.8010.35.1
Dec10° / 558.11.29.82.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 56%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24753
34753
44753
54654
64654
74555
84456
94456
104357
114357
124456
134456
144357
154357
164357
174258
184258
194258
204258
214357
224357
234357
244456
254456
264357
274357
284357
294357
304258
314258

Chance of precipitation in May

Any precipitation

Seogwipo gets around 132 mm of rain over 9.3 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 30% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
131
231
331
432
532
632
732
833
933
1033
1132
1232
1332
1431
1531
1631
1730
1830
1930
2029
2129
2229
2328
2428
2528
2627
2727
2827
2927
3027
3128

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 45% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16623101
26523102
36424102
46225112
56225112
66026122
75927122
85827123
95628133
105628133
115429143
125429143
135230153
145131153
154932163
164733173
174534183
184334193
194135203
203936224
213736234
223537244
233337254
243238265
253038285
262838295
272637316
282437327
292236348
302035369
3119333810

Wind in May

Winds average 11 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 18 min at the start of May to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over May. Sunrise moves from 5:52 AM to 5:31 AM, and sunset from 7:10 PM to 7:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:527:10
213.35:517:11
313.45:507:12
413.45:497:12
513.45:487:13
613.45:477:14
713.55:467:15
813.55:457:15
913.55:447:16
1013.65:437:17
1113.65:437:18
1213.65:427:18
1313.65:417:19
1413.75:407:20
1513.75:397:21
1613.75:397:21
1713.75:387:22
1813.85:377:23
1913.85:377:24
2013.85:367:24
2113.85:357:25
2213.85:357:26
2313.95:347:26
2413.95:347:27
2513.95:337:28
2613.95:337:28
2713.95:327:29
2814.05:327:30
2914.05:317:30
3014.05:317:31
3114.05:317:32

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.69 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.05 kWh/m² to a high of 5.69 kWh/m² in May across the year — May's 5.69 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in May

Hazard calendar for Seogwipo

In seasonPeak

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

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

Seogwipo's rainy season runs April–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 Seogwipo?

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

6.4
Sightseeing
2nd-best month of the year
3.4
Beach & pool
6th-best month of the year

May is a reasonable time to visit Seogwipo for sightseeing.

What to pack for Seogwipo in May

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

In May, Seogwipo sees daytime highs around 20°C and nights near 15°C. Worth packing: rain gear and sun protection. About 9 days see rain.

rain gearsun protection

Sea temperature near Seogwipo in May

The nearest coast averages about 18°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 15 km away) is warmest in August at about 27°C and coldest in March near 15°C.

It's comfortable for a long swim from Jun 6 to Dec 2 — about 5.9 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan17Cool
Feb15Cool
Mar15Cool
Apr16Cool
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct24Refreshing
Nov22Refreshing
Dec19Cool

UV index in Seogwipo in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Seogwipo peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 17UV 9Dec 20UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7High
May9Very high
Jun8Very high
Jul10Very high
Aug8Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Seogwipo 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 Seogwipo is worst in March — around 28 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (July, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateMar 2128 µg/m³Jul 2312 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb23Moderate
Mar28Moderate
Apr27Moderate
May22Moderate
Jun17Moderate
Jul12Good
Aug12Moderate
Sep13Moderate
Oct13Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Seogwipo?

Seogwipo sits at 33.3°N, 126.6°E, 69 m above sea level, in South Korea. The nearest listed city is Ara-dong, 24 km away.

Haenam

Topography around Seogwipo

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

Within 3 km, the terrain around Seogwipo has significant variations in elevation — a maximum elevation change of 287 m around an average of 80 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,921 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,905 m.

The land around Seogwipo is covered by trees (47%), artificial surfaces (26%) and water (24%) within 3 km, water (48%) and trees (44%) within 16 km, and water (85%) within 80 km.

3 km
287 m
16 km
1,921 m
80 km
1,905 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Ara-dong 24 km · Ora-dong 26 km · Seodong 26 km · Ido-dong 27 km · Tallang-dong 28 km · Jeju 29 km · Gaigeturi 33 km · Haenam 147 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 Seogwipo (33.2533°, 126.5618°, elevation 69 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).