Seonghwan weather in July

In July, Seonghwan sees average daytime highs of 29°C and overnight lows near 22°C, with 278 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 28°C in the first days to 30°C by the end. The sky is clear or mostly clear about 16% 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 Seonghwan's 12th-clearest and 7th-windiest month. For the whole year in context, see Seonghwan's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
22°
11th coldest
Rainfall
278 mm
16.7 wet days
Daylight
14 h 18 min
5:28 AM – 7:46 PM
Cloud cover
73%
12th clearest
Wind
9 km/h
7th windiest
Solar energy
4.39 kWh/m²
Travel score
4.5
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

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

A typical July day in Seonghwan reaches about 29°C in the afternoon and slips back to 22°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)
12820
22820
32821
42821
52821
62821
72821
82821
92821
102821
112921
122922
132922
142922
152922
162922
172922
182922
192922
202922
212923
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How July really feels in Seonghwan

Once humidity and wind are folded in, July averages 13 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
13
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.

Seonghwan 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°234.22.59.80.0
Feb / -4°294.21.710.60.4
Mar11° / 456.41.411.73.2
Apr18° / 767.30.112.96.3
May24° / 12°917.7013.97.2
Jun28° / 18°1278.5014.56.5
Jul29° / 22°27816.7014.34.5
Aug30° / 22°24715.3013.44.6
Sep26° / 17°1328.1012.37.0
Oct20° / 585.30117.2
Nov12° / 476.80.3103.6
Dec / -4°245.21.99.50.2

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of July, with mostly cloudy or overcast conditions the remaining 70%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
22971
32971
42872
52674
62674
72674
82674
92674
102674
112674
122674
132674
142773
152872
162971
172971
182971
192971
203070
213169
223268
233367
243466
253565
263565
273664
283664
293862
303961
314060

Chance of precipitation in July

Any precipitation

Seonghwan gets around 278 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 57% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
146
248
349
450
551
652
753
854
954
1055
1155
1256
1356
1457
1557
1657
1757
1857
1956
2056
2155
2254
2354
2453
2552
2652
2752
2851
2951
3051
3151

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 47% of days. Sticky, muggy-or-worse air turns up on roughly 89% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1162345241
2152145261
3152045281
4141845302
5041745322
6041644342
7031543363
8031443373
9031342393
10031241404
11031140414
12031039435
1303938445
1402837466
1502836487
1602735498
1702633518
1802532529
19015305410
20014295511
21013275712
22013265713
23013245715
24012235816
25012215818
26012205819
27011195821
28001185922
29001175923
30001175824
31001165825

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
38calm
48calm
58calm
68calm
78calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
278calm
288calm
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 5:20 AM to 5:39 AM, and sunset from 7:50 PM to 7:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.55:207:50
214.55:207:50
314.55:217:50
414.55:217:50
514.55:227:50
614.55:227:49
714.45:237:49
814.45:237:49
914.45:247:49
1014.45:247:48
1114.45:257:48
1214.45:257:48
1314.45:267:47
1414.35:277:47
1514.35:277:47
1614.35:287:46
1714.35:297:46
1814.35:297:45
1914.25:307:45
2014.25:317:44
2114.25:327:43
2214.25:327:43
2314.15:337:42
2414.15:347:41
2514.15:357:41
2614.15:357:40
2714.05:367:39
2814.05:377:38
2914.05:387:37
3014.05:397:37
3113.95:397:36

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.39 kWh/m².

For context, solar energy here swings from a low near 2.32 kWh/m² to a high of 5.85 kWh/m² in May across the year — July's 4.39 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.5Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.4Bright
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 Seonghwan

In seasonPeak

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

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

Seonghwan'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 July a good time to visit Seonghwan?

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

4.5
Sightseeing
7th-best month of the year
5.7
Beach & pool
5th-best month of the year

July is a reasonable time to visit Seonghwan for sightseeing.

What to pack for Seonghwan in July

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

In July, Seonghwan sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 17 days see rain.

light clothesrain gear

Sea temperature near Seonghwan in July

The nearest coast averages about 21°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 51 km away) is warmest in August at about 23°C and coldest in February near 4°C.

It's comfortable for a long swim from Jul 12 to Oct 14 — about 3.1 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan6Bracing
Feb4Bracing
Mar5Bracing
Apr8Bracing
May12Bracing
Jun16Cool
Jul21Refreshing
Aug23Refreshing
Sep23Refreshing
Oct20Cool
Nov15Cool
Dec10Bracing

UV index in Seonghwan 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 Seonghwan peaks around August 13 at about 8 (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 13UV 8Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May6High
Jun7High
Jul8Very high
Aug8Very high
Sep7Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Seonghwan 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 Seonghwan 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 Seonghwan?

Seonghwan sits at 36.9°N, 127.1°E, 38 m above sea level, in South Korea. The nearest listed city is Pyeongtaek, 10 km away.

YesanSejong

Topography around Seonghwan

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

Within 3 km, the terrain around Seonghwan has only modest variations in elevation — a maximum elevation change of 162 m around an average of 35 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 566 m; within 80 km, large variations in elevation — a maximum elevation change of 1,126 m.

The land around Seonghwan is covered by trees (37%), cropland (34%) and artificial surfaces (22%) within 3 km, trees (35%), cropland (32%) and artificial surfaces (24%) within 16 km, and trees (53%) and cropland (21%) within 80 km.

3 km
162 m
16 km
566 m
80 km
1,126 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
July weather nearby: Pyeongtaek 10 km · Cheonan 12 km · Anseong 16 km · Asan 19 km · Osan 27 km · Chinch'ŏn 29 km · Yesan 37 km · Sejong 39 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 Seonghwan (36.9156°, 127.1314°, elevation 38 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).