Koch'ang weather in August

In August, Koch'ang sees average daytime highs of 29°C and overnight lows near 23°C, with 228 mm of rain across 16 wet days and about 13.3 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 30°C in the first days to 28°C by the end. The sky is clear or mostly clear about 27% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 13 h 48 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Koch'ang's 9th-clearest and 10th-windiest month. For the whole year in context, see Koch'ang's year-round climate.

Daytime high
29°
1st warmest
Overnight low
23°
12th coldest
Rainfall
228 mm
16 wet days
Daylight
13 h 18 min
5:57 AM – 7:18 PM
Cloud cover
65%
9th clearest
Wind
9 km/h
10th windiest
Solar energy
4.76 kWh/m²
Travel score
4.6
out of 10

Koch'ang is human settlement in South Korea.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 30°C in the first days to 28°C by the end.

A typical August day in Koch'ang reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 32°C. Set against its neighbours, August runs about 1°C warmer than July and about 4°C warmer than September.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13024
23024
33024
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143023
153023
163023
172923
182923
192923
202923
212923
222923
232922
242922
252922
262822
272822
282822
292821
302821
312821

How August really feels in Koch'ang

Once humidity and wind are folded in, August averages 21 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
21
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Koch'ang weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°285.94.19.90.0
Feb / -2°335.41.710.70.7
Mar11° / 557.3111.73.2
Apr17° / 817.5012.95.9
May22° / 13°887.8013.87.1
Jun26° / 18°1479.6014.36.6
Jul29° / 23°23815.6014.14.9
Aug29° / 23°22816013.34.6
Sep26° / 18°1509.5012.26.8
Oct20° / 11°575.5011.17.3
Nov14° / 476.90.210.14.2
Dec / -1°316.52.99.70.9

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 16% of August, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24852
34852
44852
54852
64852
74852
84753
94654
104654
114456
124456
134357
144258
154159
163961
173961
183961
193961
203961
213961
223961
233961
243961
253862
263862
274060
284060
294060
304258
314258

Chance of precipitation in August

Any precipitation

Koch'ang gets around 228 mm of rain over 16 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 51% and peaks near 53% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
149
250
350
450
551
651
751
851
951
1051
1152
1252
1352
1452
1553
1653
1753
1853
1953
2053
2153
2253
2353
2452
2552
2651
2750
2850
2949
3047
3146

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the oppressive band about 47% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10094842
20194843
30194743
401104743
501104743
601104742
701104742
801114741
901114839
1002124838
1102134937
1202144935
1302155034
1402165032
1502175130
1603185029
1703205027
1803215125
1904235023
2004245121
2105265019
2206274918
2306294816
2407314714
2518324613
2619344411
27111354310
2811236419
2911437408
3021638387
3121739366

Wind in August

Winds average 9 km/h in August.

Across August, 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
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 48 min at the start of August to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over August. Sunrise moves from 5:45 AM to 6:09 AM, and sunset from 7:33 PM to 6:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:457:33
213.85:467:33
313.85:477:32
413.75:477:31
513.75:487:30
613.75:497:29
713.65:507:28
813.65:517:27
913.65:517:26
1013.55:527:25
1113.55:537:24
1213.55:547:22
1313.45:547:21
1413.45:557:20
1513.45:567:19
1613.35:577:18
1713.35:587:17
1813.35:587:15
1913.25:597:14
2013.26:007:13
2113.26:017:11
2213.16:027:10
2313.16:027:09
2413.16:037:08
2513.06:047:06
2613.06:057:05
2713.06:057:03
2812.96:067:02
2912.96:077:01
3012.96:086:59
3112.86:096:58

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.76 kWh/m².

For context, solar energy here swings from a low near 2.24 kWh/m² to a high of 5.93 kWh/m² in May across the year — August's 4.76 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
104.9Bright
114.9Bright
124.9Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.7Bright
184.7Bright
194.7Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in August

Hazard calendar for Koch'ang

In seasonPeak

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

Koch'ang sits in the Pacific typhoon belt; the season peaks July–October.

Koch'ang'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 August a good time to visit Koch'ang?

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

4.6
Sightseeing
7th-best month of the year
5.9
Beach & pool
3rd-best month of the year

August is a reasonable time to visit Koch'ang for sightseeing.

What to pack for Koch'ang in August

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

In August, Koch'ang sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.

light clothesrain gearsun protection

Sea temperature near Koch'ang in August

The nearest coast averages about 25°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 30 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 Koch'ang in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Koch'ang peaks around September 12 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateSep 12UV 8Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5High
Apr7High
May7Very high
Jun8Very high
Jul8Very high
Aug7Very high
Sep8Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Koch'ang in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Koch'ang is worst in March — around 61 µg/m³ PM2.5 (unhealthy), about 2.1× the cleanest month (August, 28 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModeratePoorModerateMar 1960 µg/m³Aug 1129 µg/m³
PM2.5 (µg/m³)Level
Jan41Poor
Feb48Poor
Mar61Unhealthy
Apr54Poor
May45Poor
Jun39Poor
Jul29Moderate
Aug28Moderate
Sep33Moderate
Oct35Moderate
Nov38Poor
Dec34Moderate
Location & terrain

Where is Koch'ang?

Koch'ang sits at 35.4°N, 126.7°E, 44 m above sea level, in South Korea. The nearest listed city is Jangseong, 17 km away.

MasanGwangjuKimje

Topography around Koch'ang

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

Within 3 km, the terrain around Koch'ang has significant variations in elevation — a maximum elevation change of 403 m around an average of 91 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 730 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,720 m.

The land around Koch'ang is covered by trees (48%) and cropland (29%) within 3 km, trees (57%) and cropland (31%) within 16 km, and trees (40%), water (34%) and cropland (21%) within 80 km.

3 km
403 m
16 km
730 m
80 km
1,720 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Jangseong 17 km · Yeonggwang 24 km · Jeongeup 27 km · Damyang 29 km · Buan 33 km · Masan 36 km · Gwangju 37 km · Kimje 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 Koch'ang (35.4333°, 126.7°, elevation 44 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).