Boseong weather in May

In May, Boseong 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 21°C in the first days to 24°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 06 min by month's end. Set against the rest of the year, May is Boseong's 7th-clearest and 6th-windiest month. For the whole year in context, see Boseong'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
5:33 AM – 7:22 PM
Cloud cover
58%
7th clearest
Wind
11 km/h
6th windiest
Solar energy
5.72 kWh/m²
Travel score
7.0
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 Boseong reaches about 23°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 19°C and 26°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)
12111
22111
32111
42111
52112
62112
72112
82112
92212
102212
112213
122213
132213
142213
152213
162213
172313
182313
192314
202314
212314
222314
232314
242414
252415
262415
272415
282415
292415
302415
312416

How May really feels in Boseong

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.

Boseong 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°294.41.29.90.2
Feb / -1°3850.810.71.4
Mar13° / 727.80.511.73.6
Apr18° / 1018012.86.1
May23° / 13°1148.1013.87.0
Jun25° / 18°17510.2014.36.4
Jul28° / 23°26816.1014.14.9
Aug29° / 23°23415.8013.34.6
Sep26° / 18°14610.3012.26.6
Oct21° / 12°614.8011.17.5
Nov14° / 485.5010.24.8
Dec / -1°293.90.59.71.5

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 12% of May, with mostly cloudy or overcast conditions the remaining 53%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
34951
44951
54951
64753
74753
84654
94654
104555
114654
124654
134555
144555
154555
164654
174555
184456
194456
204654
214654
224654
234654
244753
254852
264852
274852
284753
294852
304852
314753

Chance of precipitation in May

Any precipitation

Boseong 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
327
427
528
628
728
828
928
1028
1128
1228
1328
1428
1527
1627
1727
1827
1926
2026
2126
2225
2325
2424
2524
2624
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 56% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1731971
2731971
3722071
4702181
5702181
6692281
7682291
8672391
9672391
10662491
11662491
12652591
13642691
146326101
156227101
166028111
175829121
185730121
195431132
205232142
215133142
224934152
234735162
244536172
254337182
264038202
273738213
283539233
293239253
302940274
312639295

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 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
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 24 min at the start of May to 14 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over May. Sunrise moves from 5:47 AM to 5:25 AM, and sunset from 7:10 PM to 7:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:477:10
213.45:467:11
313.45:457:12
413.55:447:13
513.55:437:14
613.55:427:14
713.65:417:15
813.65:407:16
913.65:397:17
1013.75:387:18
1113.75:387:18
1213.75:377:19
1313.75:367:20
1413.85:357:21
1513.85:347:22
1613.85:337:22
1713.85:337:23
1813.95:327:24
1913.95:317:25
2013.95:317:25
2113.95:307:26
2214.05:297:27
2314.05:297:28
2414.05:287:28
2514.05:287:29
2614.05:277:30
2714.15:277:31
2814.15:267:31
2914.15:267:32
3014.15:257:33
3114.15:257:33

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.72 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.47 kWh/m² to a high of 5.72 kWh/m² in May across the year — May's 5.72 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in May

Hazard calendar for Boseong

In seasonPeak

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

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

Boseong'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 Boseong?

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

7.0
Sightseeing
2nd-best month of the year
5.1
Beach & pool
5th-best month of the year

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

What to pack for Boseong in May

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

In May, Boseong 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 Boseong 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 44 km away) is warmest in August at about 26°C and coldest in March near 12°C.

It's comfortable for a long swim from Jun 23 to Oct 19 — about 3.9 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar12Bracing
Apr13Bracing
May16Cool
Jun19Cool
Jul23Refreshing
Aug26Warm
Sep24Refreshing
Oct20Refreshing
Nov17Cool
Dec15Bracing

UV index in Boseong 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 Boseong peaks around September 9 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highModerateSep 9UV 8Dec 22UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug8Very high
Sep8Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Boseong 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 Boseong is worst in March — around 43 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (July, 18 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 1842 µg/m³Jul 2418 µg/m³
PM2.5 (µg/m³)Level
Jan31Moderate
Feb36Poor
Mar43Poor
Apr37Poor
May30Moderate
Jun25Moderate
Jul18Moderate
Aug18Moderate
Sep22Moderate
Oct24Moderate
Nov27Moderate
Dec26Moderate
Location & terrain

Where is Boseong?

Boseong sits at 34.8°N, 127.1°E, 162 m above sea level, in South Korea. The nearest listed city is Jangheung, 19 km away.

YeongamSuncheonNajuGwangjuMasan

Topography around Boseong

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

Within 3 km, the terrain around Boseong has only modest variations in elevation — a maximum elevation change of 222 m around an average of 173 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 772 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,718 m.

The land around Boseong is covered by trees (52%) and cropland (28%) within 3 km, trees (64%) within 16 km, and trees (44%) and water (36%) within 80 km.

3 km
222 m
16 km
772 m
80 km
1,718 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Jangheung 19 km · Beolgyo 25 km · Hwasun 33 km · Yeongam 35 km · Suncheon 42 km · Naju 44 km · Gwangju 45 km · Masan 46 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 Boseong (34.7715°, 127.08°, elevation 162 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).