Boryeong weather in May

In May, Boryeong sees average daytime highs of 18°C and overnight lows near 14°C, with 88 mm of rain across 6.9 wet days and about 13.9 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 16°C in the first days to 20°C by the end. The sky is clear or mostly clear about 40% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of May to 14 h 18 min by month's end. Set against the rest of the year, May is Boryeong's 6th-clearest and 9th-windiest month. For the whole year in context, see Boryeong's year-round climate.

Daytime high
18°
6th warmest
Overnight low
14°
7th coldest
Rainfall
88 mm
6.9 wet days
Daylight
13 h 54 min
5:32 AM – 7:28 PM
Cloud cover
53%
6th clearest
Wind
13 km/h
9th windiest
Solar energy
5.89 kWh/m²
Travel score
6.2
out of 10

Boryeong 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 16°C in the first days to 20°C by the end.

A typical May day in Boryeong reaches about 18°C in the afternoon and slips back to 14°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 20°C. Set against its neighbours, May runs about 5°C warmer than April and about 4°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11612
21612
31612
41612
51612
61713
71713
81713
91713
101713
111713
121713
131714
141814
151814
161814
171814
181814
191815
201815
211915
221915
231915
241915
251915
261916
272016
282016
292016
302016
312016

How May really feels in Boryeong

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.

Boryeong 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 / -1°255.73.99.80.0
Feb / 314.61.510.60.1
Mar / 466.40.711.71.6
Apr13° / 827.4012.93.9
May18° / 14°886.9013.96.2
Jun22° / 19°1227.8014.46.9
Jul26° / 23°26314.3014.26.0
Aug27° / 24°22713.3013.45.9
Sep24° / 20°1438.1012.27.2
Oct19° / 15°595.1011.17.0
Nov12° / 497.10.310.13.7
Dec / 317.13.39.60.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% 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 47%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25347
35347
45347
55248
65248
75149
85149
95149
105149
115149
125149
135149
145248
155248
165347
175446
185446
195545
205446
215545
225545
235545
245644
255644
265644
275644
285545
295545
305446
315446

Chance of precipitation in May

Any precipitation

Boryeong gets around 88 mm of rain over 6.9 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 23% and peaks near 26% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
126
226
326
426
526
626
726
826
925
1025
1125
1225
1325
1424
1524
1624
1723
1823
1923
2022
2122
2221
2321
2420
2520
2620
2719
2819
2919
3019
3119

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 57% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1871210
2861310
3851410
4841510
5831610
6811810
7801910
8792010
9782110
10762310
11742420
12722620
13702820
14673030
15653230
16613441
17593641
18553951
19524161
20484381
21454591
224148111
233849121
243551140
253153160
262853181
272553211
282253241
291953271
301752301
311450342

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 11 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712calm
2812calm
2912calm
3012calm
3111calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 30 min at the start of May to 14 h 18 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 5:47 AM to 5:23 AM, and sunset from 7:15 PM to 7:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:477:15
213.55:467:16
313.55:457:16
413.65:447:17
513.65:427:18
613.65:417:19
713.75:407:20
813.75:397:21
913.75:387:22
1013.85:377:23
1113.85:367:23
1213.85:367:24
1313.85:357:25
1413.95:347:26
1513.95:337:27
1613.95:327:28
1714.05:317:28
1814.05:317:29
1914.05:307:30
2014.05:297:31
2114.15:287:32
2214.15:287:32
2314.15:277:33
2414.15:267:34
2514.15:267:35
2614.25:257:36
2714.25:257:36
2814.25:247:37
2914.25:247:38
3014.35:237:38
3114.35:237:39

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.89 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.15 kWh/m² to a high of 5.89 kWh/m² in May across the year — May's 5.89 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
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.9Bright
185.9Bright
195.9Bright
206.0Bright
216.0Bright
226.0Bright
236.0Intense
246.0Intense
256.0Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in May

Hazard calendar for Boryeong

In seasonPeak

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

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

Boryeong'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 Boryeong?

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

6.2
Sightseeing
4th-best month of the year
2.1
Beach & pool
6th-best month of the year

May is a reasonable time to visit Boryeong for sightseeing.

What to pack for Boryeong in May

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

In May, Boryeong sees daytime highs around 18°C and nights near 14°C. Worth packing: sun protection. About 7 days see rain.

sun protection

Sea temperature near Boryeong in May

The nearest coast averages about 13°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 20 km away) is warmest in August at about 25°C and coldest in February near 5°C.

It's comfortable for a long swim from Jun 30 to Oct 7 — about 3.3 months when the water holds above 20°C.

0°10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan7Bracing
Feb5Bracing
Mar6Bracing
Apr9Bracing
May13Bracing
Jun18Cool
Jul22Refreshing
Aug25Warm
Sep23Refreshing
Oct19Cool
Nov15Bracing
Dec11Bracing

UV index in Boryeong in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Boryeong peaks around September 10 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateSep 10UV 7Dec 22UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5Moderate
Apr6High
May6High
Jun7High
Jul7Very high
Aug7Very high
Sep7Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Boryeong 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 Boryeong is worst in March — around 64 µg/m³ PM2.5 (unhealthy), about 2.0× the cleanest month (July, 32 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModeratePoorMar 1663 µg/m³Jul 2133 µg/m³
PM2.5 (µg/m³)Level
Jan52Poor
Feb56Unhealthy
Mar64Unhealthy
Apr55Poor
May46Poor
Jun42Poor
Jul32Moderate
Aug35Moderate
Sep43Poor
Oct48Poor
Nov51Poor
Dec48Poor
Location & terrain

Where is Boryeong?

Boryeong sits at 36.3°N, 126.6°E, 11 m above sea level, in South Korea. The nearest listed city is Hongseong, 29 km away.

GunsanYesanNonsanGongjuSeosanYŏnmu

Topography around Boryeong

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

Within 3 km, the terrain around Boryeong has significant variations in elevation — a maximum elevation change of 311 m around an average of 44 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 780 m; within 80 km, large variations in elevation — a maximum elevation change of 847 m.

The land around Boryeong is covered by trees (34%), cropland (33%) and artificial surfaces (26%) within 3 km, trees (50%) and water (24%) within 16 km, and water (43%), trees (30%) and cropland (20%) within 80 km.

3 km
311 m
16 km
780 m
80 km
847 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Hongseong 29 km · Buyeo 29 km · Gunsan 42 km · Yesan 43 km · Nonsan 47 km · Gongju 49 km · Seosan 50 km · Yŏnmu 51 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 Boryeong (36.3493°, 126.5977°, elevation 11 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).