Gunsan weather in August

In August, Gunsan sees average daytime highs of 29°C and overnight lows near 24°C, with 225 mm of rain across 14 wet days and about 13.4 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 29°C in the first days to 28°C by the end. The sky is clear or mostly clear about 30% of the time in August, and the air most often feels miserable.

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 Gunsan's 9th-clearest and 10th-windiest month. For the whole year in context, see Gunsan's year-round climate.

Daytime high
29°
1st warmest
Overnight low
24°
12th coldest
Rainfall
225 mm
14 wet days
Daylight
13 h 24 min
5:56 AM – 7:19 PM
Cloud cover
62%
9th clearest
Wind
10 km/h
10th windiest
Solar energy
4.59 kWh/m²
Travel score
5.1
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 29°C in the first days to 28°C by the end.

A typical August day in Gunsan reaches about 29°C in the afternoon and slips back to 24°C overnight — a 5°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.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12925
22925
33025
43025
53025
63025
73025
83025
93025
102925
112925
122925
132925
142925
152925
162924
172924
182924
192924
202924
212924
222824
232824
242823
252823
262823
272823
282823
292823
302723
312722

How August really feels in Gunsan

Once humidity and wind are folded in, August averages 19 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
19
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.

Gunsan 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 / -2°245.12.79.80.0
Feb / -1°314.51.310.60.4
Mar10° / 486.70.511.72.5
Apr16° / 817.2012.95.3
May21° / 14°877.2013.96.9
Jun25° / 19°1268014.47.0
Jul28° / 23°25514.4014.25.4
Aug29° / 24°22514013.45.1
Sep25° / 20°1448.3012.27.0
Oct20° / 13°584.9011.17.2
Nov13° / 446.50.110.14.1
Dec / 275.71.99.60.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% 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 54%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24753
34852
44852
54852
64852
74852
84852
94852
104852
114753
124753
134654
144654
154654
164555
174555
184555
194456
204456
214456
224456
234456
244357
254357
264456
274357
284357
294456
304555
314555

Chance of precipitation in August

Any precipitation

Gunsan gets around 225 mm of rain over 14 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 45% and peaks near 47% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
142
243
343
443
544
644
744
844
944
1044
1144
1244
1345
1445
1545
1645
1746
1846
1946
2046
2146
2247
2347
2447
2547
2646
2746
2845
2945
3044
3143

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the miserable band about 39% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10073459
20073360
30173260
40173161
50183160
60183061
70193159
80193159
901103257
1001103356
1101113454
1202123551
1302133749
1402143846
1502153944
1602164041
1703184138
1803194236
1904204333
2004224431
2105234428
2205254426
2306264423
2407284321
2517304319
2618324218
2719334016
28110353914
29112373813
30113383611
31115393510

Wind in August

Winds average 10 km/h in August.

Across August, 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
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 5:44 AM to 6:08 AM, and sunset from 7:35 PM to 6:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:447:35
213.85:457:34
313.85:457:33
413.85:467:32
513.75:477:31
613.75:487:30
713.75:497:29
813.65:497:28
913.65:507:27
1013.65:517:26
1113.55:527:24
1213.55:537:23
1313.55:547:22
1413.45:547:21
1513.45:557:20
1613.45:567:19
1713.35:577:17
1813.35:587:16
1913.35:587:15
2013.25:597:13
2113.26:007:12
2213.26:017:11
2313.16:027:10
2413.16:027:08
2513.16:037:07
2613.06:047:05
2713.06:057:04
2812.96:067:03
2912.96:067:01
3012.96:077:00
3112.86:086:58

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.59 kWh/m².

For context, solar energy here swings from a low near 2.22 kWh/m² to a high of 5.87 kWh/m² in May across the year — August's 4.59 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.6Bright
164.6Bright
174.6Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in August

Hazard calendar for Gunsan

In seasonPeak

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

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

Gunsan'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 Gunsan?

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

5.1
Sightseeing
7th-best month of the year
6.3
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Gunsan for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Gunsan in August

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

In August, Gunsan sees daytime highs around 29°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 14 days see rain.

light clothesrain gearsun protection

Sea temperature near Gunsan in August

The nearest coast averages about 26°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 14 km away) is warmest in August at about 26°C and coldest in February near 6°C.

It's comfortable for a long swim from Jun 25 to Oct 10 — about 3.6 months when the water holds above 20°C.

0°10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan7Bracing
Feb6Bracing
Mar6Bracing
Apr9Bracing
May14Bracing
Jun19Cool
Jul23Refreshing
Aug26Warm
Sep23Refreshing
Oct19Cool
Nov15Bracing
Dec10Bracing

UV index in Gunsan 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 Gunsan peaks around September 11 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 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateSep 11UV 8Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5High
Apr6High
May7Very high
Jun7Very high
Jul7Very high
Aug7Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Moderate

Air quality in Gunsan 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 Gunsan 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 Gunsan?

Gunsan sits at 36.0°N, 126.7°E, 14 m above sea level, in South Korea. The nearest listed city is Iksan, 22 km away.

BuyeoYŏnmuNonsanWanju

Topography around Gunsan

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

Within 3 km, the terrain around Gunsan has only modest variations in elevation — a maximum elevation change of 124 m around an average of 12 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 326 m; within 80 km, large variations in elevation — a maximum elevation change of 1,137 m.

The land around Gunsan is covered by artificial surfaces (50%) and water (24%) within 3 km, cropland (36%) and water (24%) within 16 km, and trees (39%) and water (37%) within 80 km.

3 km
124 m
16 km
326 m
80 km
1,137 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Iksan 22 km · Kimje 25 km · Buan 28 km · Namsa 31 km · Buyeo 37 km · Yŏnmu 39 km · Nonsan 42 km · Wanju 42 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 Gunsan (35.9786°, 126.7114°, elevation 14 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).