Jangseong weather in August

In August, Jangseong sees average daytime highs of 30°C and overnight lows near 23°C, with 224 mm of rain across 15.7 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 31°C in the first days to 29°C by the end. The sky is clear or mostly clear about 24% 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 Jangseong's 10th-clearest and 10th-windiest month. For the whole year in context, see Jangseong's year-round climate.

Daytime high
30°
1st warmest
Overnight low
23°
12th coldest
Rainfall
224 mm
15.7 wet days
Daylight
13 h 18 min
5:57 AM – 7:17 PM
Cloud cover
66%
10th clearest
Wind
9 km/h
10th windiest
Solar energy
4.8 kWh/m²
Travel score
4.3
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 31°C in the first days to 29°C by the end.

A typical August day in Jangseong reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 33°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)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103123
113123
123023
133023
143023
153023
163023
173023
183023
193023
203022
213022
222922
232922
242922
252922
262922
272921
282921
292921
302821
312821

How August really feels in Jangseong

Once humidity and wind are folded in, August averages 23 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
23
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.

Jangseong 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°275.33.19.90.0
Feb / -2°345.31.410.71.0
Mar12° / 607.30.811.73.6
Apr18° / 867.6012.96.3
May23° / 12°978013.87.2
Jun27° / 18°16210.1014.36.3
Jul29° / 22°24316.2014.14.6
Aug30° / 23°22415.7013.34.3
Sep26° / 17°1459.8012.26.6
Oct21° / 11°554.5011.17.5
Nov14° / 466.30.210.14.6
Dec / -1°295.42.29.71.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% 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 60%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24456
34555
44555
54555
64555
74555
84456
94357
104258
114258
124159
134159
143961
153961
163862
173862
183862
193862
203763
213763
223763
233763
243763
253763
263763
273862
283961
294060
304159
314159

Chance of precipitation in August

Any precipitation

Jangseong gets around 224 mm of rain over 15.7 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 50% and peaks near 52% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
150
250
350
450
550
650
750
850
950
1049
1149
1250
1350
1450
1550
1651
1751
1851
1951
2052
2152
2252
2352
2452
2551
2651
2750
2849
2949
3048
3147

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 94% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
101105534
201105534
301105534
401105435
501115335
601115434
701115434
802125333
902135332
1002135431
1102145430
1202155429
1302165527
1402175526
1503195325
1603205423
1703225322
1804235221
1904255219
2005265118
2105285116
2206294915
2317314813
2418324712
2519344511
26110354310
2711237419
2821337408
2921538387
3021739366
3131939345

Wind in August

Winds average 9 km/h in August.

Across August, 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
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

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 6:08 AM, and sunset from 7:33 PM to 6:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:457:33
213.85:467:32
313.75:477:31
413.75:477:30
513.75:487:29
613.75:497:28
713.65:507:27
813.65:507:26
913.65:517:25
1013.55:527:24
1113.55:537:23
1213.55:547:22
1313.45:547:21
1413.45:557:20
1513.45:567:18
1613.35:577:17
1713.35:587:16
1813.35:587:15
1913.25:597:14
2013.26:007:12
2113.26:017:11
2213.16:017:10
2313.16:027:08
2413.16:037:07
2513.06:047:06
2613.06:057:04
2713.06:057:03
2812.96:067:02
2912.96:077:00
3012.96:086:59
3112.86:086:57

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.8 kWh/m².

For context, solar energy here swings from a low near 2.27 kWh/m² to a high of 5.91 kWh/m² in May across the year — August's 4.8 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.1Bright
65.1Bright
75.1Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
124.9Bright
134.9Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in August

Hazard calendar for Jangseong

In seasonPeak

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

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

Jangseong'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 Jangseong?

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

4.3
Sightseeing
8th-best month of the year
5.9
Beach & pool
3rd-best month of the year

August is a reasonable time to visit Jangseong for sightseeing.

What to pack for Jangseong in August

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

In August, Jangseong sees daytime highs around 30°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 Jangseong 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 38 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 Jangseong 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 Jangseong 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 Jangseong 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 Jangseong 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 Jangseong?

Jangseong sits at 35.3°N, 126.8°E, 70 m above sea level, in South Korea. The nearest listed city is Koch'ang, 17 km away.

Jeongeup

Topography around Jangseong

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

Within 3 km, the terrain around Jangseong has significant variations in elevation — a maximum elevation change of 382 m around an average of 102 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 796 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,715 m.

The land around Jangseong is covered by trees (54%) and cropland (22%) within 3 km, trees (60%) and cropland (22%) within 16 km, and trees (46%), water (27%) and cropland (22%) within 80 km.

3 km
382 m
16 km
796 m
80 km
1,715 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Koch'ang 17 km · Damyang 18 km · Masan 19 km · Gwangju 20 km · Yeonggwang 25 km · Naju 30 km · Hwasun 32 km · Jeongeup 36 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 Jangseong (35.2978°, 126.7844°, elevation 70 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).