Koesan weather in July

In July, Koesan sees average daytime highs of 28°C and overnight lows near 21°C, with 258 mm of rain across 16.7 wet days and about 14.3 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 27°C in the first days to 30°C by the end. The sky is clear or mostly clear about 14% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 14 h 30 min at the start of July to 13 h 54 min by month's end. Set against the rest of the year, July is Koesan's 12th-clearest and 7th-windiest month. For the whole year in context, see Koesan's year-round climate.

Daytime high
28°
2nd warmest
Overnight low
21°
11th coldest
Rainfall
258 mm
16.7 wet days
Daylight
14 h 18 min
5:26 AM – 7:43 PM
Cloud cover
76%
12th clearest
Wind
9 km/h
7th windiest
Solar energy
4.35 kWh/m²
Travel score
4.8
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 27°C in the first days to 30°C by the end.

A typical July day in Koesan reaches about 28°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 32°C. Set against its neighbours, July runs about 2°C warmer than June and on par with August.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12720
22720
32720
42720
52720
62820
72820
82820
92821
102821
112821
122821
132821
142821
152821
162821
172821
182922
192922
202922
212922
222922
232922
242922
252922
262922
273022
283023
293023
303023
313023

How July really feels in Koesan

Once humidity and wind are folded in, July averages 7 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
7
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Koesan weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -6°234.73.39.80.0
Feb / -4°334.62.110.60.4
Mar11° / 547.12.111.73.0
Apr18° / 837.70.212.96.1
May23° / 12°948013.97.1
Jun27° / 17°1258.8014.56.5
Jul28° / 21°25816.7014.34.8
Aug29° / 22°21915.5013.44.8
Sep25° / 16°1398.9012.26.9
Oct19° / 585.20117.0
Nov12° / 446.60.4103.4
Dec / -4°264.62.19.50.2

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of July, with mostly cloudy or overcast conditions the remaining 74%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22575
32476
42476
52476
62377
72377
82377
92377
102377
112377
122377
132476
142476
152476
162476
172476
182575
192674
202674
212674
222773
232872
242872
252971
263070
273070
283268
293268
303268
313565

Chance of precipitation in July

Any precipitation

Koesan gets around 258 mm of rain over 16.7 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 53% and peaks near 56% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
148
249
350
451
552
653
754
854
955
1055
1155
1255
1356
1456
1556
1656
1756
1856
1955
2055
2154
2253
2353
2452
2552
2651
2751
2851
2950
3050
3150

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 45% of days. Sticky, muggy-or-worse air turns up on roughly 81% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
12113236180
22103138200
3192939220
4182840240
5172640250
6062541270
7062441280
8052341301
9052241311
10052141331
11042040351
12041940361
13041839381
14031639401
15031538421
16021437442
17021336472
18021235492
19011134522
20011033533
2101932553
2201830583
2301829584
2401728604
2501627624
2601526635
2700525655
2800524665
2900423675
3000423676
3100422686

Wind in July

Winds average 9 km/h in July.

Across July, 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
18calm
28calm
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
298calm
308calm
318calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 30 min at the start of July to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 5:17 AM to 5:37 AM, and sunset from 7:47 PM to 7:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.55:177:47
214.55:187:47
314.55:187:47
414.55:197:47
514.55:197:47
614.45:207:46
714.45:207:46
814.45:217:46
914.45:217:46
1014.45:227:46
1114.45:227:45
1214.45:237:45
1314.35:247:44
1414.35:247:44
1514.35:257:44
1614.35:267:43
1714.35:267:43
1814.35:277:42
1914.25:287:42
2014.25:287:41
2114.25:297:40
2214.25:307:40
2314.15:317:39
2414.15:317:38
2514.15:327:38
2614.15:337:37
2714.05:347:36
2814.05:357:35
2914.05:357:35
3014.05:367:34
3113.95:377:33

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.35 kWh/m².

For context, solar energy here swings from a low near 2.37 kWh/m² to a high of 5.83 kWh/m² in May across the year — July's 4.35 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.5Bright
34.5Bright
44.4Bright
54.4Bright
64.4Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in July

Hazard calendar for Koesan

In seasonPeak

In July, Koesan sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Koesan's rainy season runs June–September, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is July a good time to visit Koesan?

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

4.8
Sightseeing
6th-best month of the year
5.7
Beach & pool
4th-best month of the year

July is a reasonable time to visit Koesan for sightseeing.

What to pack for Koesan in July

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

In July, Koesan sees daytime highs around 28°C and nights near 21°C. Pack light clothes and rain gear. About 17 days see rain.

light clothesrain gear

UV index in Koesan in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Koesan peaks around August 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 highHighModerateAug 14UV 9Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7High
Jun7Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Koesan in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Koesan is worst in March — around 80 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (July, 45 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyMar 1479 µg/m³Jul 2345 µg/m³
PM2.5 (µg/m³)Level
Jan69Unhealthy
Feb72Unhealthy
Mar80Unhealthy
Apr65Unhealthy
May58Unhealthy
Jun54Poor
Jul45Poor
Aug45Poor
Sep56Unhealthy
Oct67Unhealthy
Nov72Unhealthy
Dec65Unhealthy
Location & terrain

Where is Koesan?

Koesan sits at 36.8°N, 127.8°E, 116 m above sea level, in South Korea. The nearest listed city is Jungpyong, 19 km away.

MungyeongSejongAnseongSangju

Topography around Koesan

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

Within 3 km, the terrain around Koesan has significant variations in elevation — a maximum elevation change of 298 m around an average of 173 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 866 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,408 m.

The land around Koesan is covered by trees (58%) within 3 km, trees (74%) within 16 km, and trees (72%) within 80 km.

3 km
298 m
16 km
866 m
80 km
1,408 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Jungpyong 19 km · Chungju 22 km · Chinch'ŏn 32 km · Cheongju-si 33 km · Mungyeong 43 km · Sejong 51 km · Anseong 52 km · Sangju 55 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 Koesan (36.8108°, 127.7947°, elevation 116 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. 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).