Siheungdong weather in July

In July, Siheungdong sees average daytime highs of 28°C and overnight lows near 22°C, with 314 mm of rain across 16.5 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 18% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 14 h 36 min at the start of July to 14 hours by month's end. Set against the rest of the year, July is Siheungdong's 12th-clearest and 8th-windiest month. For the whole year in context, see Siheungdong's year-round climate.

Daytime high
28°
2nd warmest
Overnight low
22°
11th coldest
Rainfall
314 mm
16.5 wet days
Daylight
14 h 18 min
5:28 AM – 7:48 PM
Cloud cover
72%
12th clearest
Wind
9 km/h
8th windiest
Solar energy
4.34 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 28°C in the first days to 30°C by the end.

A typical July day in Siheungdong reaches about 28°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
32820
42821
52821
62821
72821
82821
92821
102821
112821
122821
132822
142822
152822
162822
172822
182922
192922
202922
212923
222923
232923
242923
252923
262923
272923
283023
293023
303023
313023

How July really feels in Siheungdong

Once humidity and wind are folded in, July averages 9 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
9
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.

Siheungdong 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 / -7°203.62.29.70.0
Feb / -5°2541.810.60.3
Mar11° / 386.2111.72.9
Apr18° / 707.3012.96.0
May23° / 12°967.70147.2
Jun27° / 18°1268.8014.56.6
Jul28° / 22°31416.5014.34.8
Aug29° / 22°25815.2013.44.8
Sep26° / 17°1247.6012.37.1
Oct20° / 555.30117.1
Nov12° / 477.10.4103.3
Dec / -5°234.81.59.50.1

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of July, with mostly cloudy or overcast conditions the remaining 67%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23268
33169
43169
53070
63070
72971
82971
92971
102971
112971
122971
132971
142971
152971
162971
173070
183070
193268
203268
213367
223367
233565
243565
253763
263862
273862
283862
294060
304060
314159

Chance of precipitation in July

Any precipitation

Siheungdong gets around 314 mm of rain over 16.5 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 55% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
145
246
347
448
549
650
750
851
951
1051
1152
1252
1353
1453
1554
1655
1755
1855
1955
2055
2155
2255
2355
2455
2555
2655
2755
2855
2955
3055
3155

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 91% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
152052230
241852251
341751271
441550301
531450321
631249342
731148352
831147372
931046393
103945403
113843424
123842444
133740455
143638476
152636497
162534518
172532529
1824305410
1924285511
2013275712
2113245814
2213235815
2312215917
2412195919
2512185920
2611166022
2711155924
2801145926
2901135927
3001135729
3101125730

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
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 July

DaylightNight

Daylight runs from about 14 h 36 min at the start of July to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 5:19 AM to 5:39 AM, and sunset from 7:52 PM to 7:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.65:197:52
214.55:197:52
314.55:207:52
414.55:207:52
514.55:217:52
614.55:217:52
714.55:227:52
814.55:237:51
914.55:237:51
1014.55:247:51
1114.45:247:50
1214.45:257:50
1314.45:267:50
1414.45:267:49
1514.45:277:49
1614.35:287:48
1714.35:287:48
1814.35:297:47
1914.35:307:47
2014.35:307:46
2114.25:317:46
2214.25:327:45
2314.25:337:44
2414.25:337:44
2514.15:347:43
2614.15:357:42
2714.15:367:41
2814.15:377:40
2914.05:377:40
3014.05:387:39
3114.05:397:38

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.34 kWh/m².

For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 5.79 kWh/m² in May across the year — July's 4.34 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.6Bright
44.6Bright
54.5Bright
64.5Bright
74.5Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in July

Hazard calendar for Siheungdong

In seasonPeak

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

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

Siheungdong's rainy season runs July–August, 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 Siheungdong?

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
5.8
Beach & pool
4th-best month of the year

July is a reasonable time to visit Siheungdong for sightseeing.

What to pack for Siheungdong in July

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

In July, Siheungdong sees daytime highs around 28°C and nights near 22°C. Pack light clothes and rain gear. About 17 days see rain.

light clothesrain gear

Sea temperature near Siheungdong 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 27 km away) is warmest in August at about 24°C and coldest in February near 4°C.

It's comfortable for a long swim from Jul 11 to Oct 13 — 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
Jun17Cool
Jul21Refreshing
Aug24Refreshing
Sep23Refreshing
Oct20Cool
Nov15Bracing
Dec10Bracing

UV index in Siheungdong in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Siheungdong peaks around July 22 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 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 22UV 8Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May5High
Jun7High
Jul8Very high
Aug8Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Siheungdong 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 Siheungdong is worst in March — around 160 µg/m³ PM2.5 (very unhealthy), about 2.0× the cleanest month (August, 81 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyVery unhealthyUnhealthyMar 13158 µg/m³Aug 1282 µg/m³
PM2.5 (µg/m³)Level
Jan145Unhealthy
Feb149Unhealthy
Mar160Very unhealthy
Apr127Unhealthy
May111Unhealthy
Jun98Unhealthy
Jul88Unhealthy
Aug81Unhealthy
Sep110Unhealthy
Oct132Unhealthy
Nov142Unhealthy
Dec133Unhealthy
Location & terrain

Where is Siheungdong?

Siheungdong sits at 37.5°N, 126.9°E, 35 m above sea level, in South Korea. The nearest listed city is Gwangmyeong, 5.0 km away.

Topography around Siheungdong

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

Within 3 km, the terrain around Siheungdong has significant variations in elevation — a maximum elevation change of 460 m around an average of 99 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 604 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,443 m.

The land around Siheungdong is covered by trees (49%) and artificial surfaces (48%) within 3 km, artificial surfaces (46%) and trees (43%) within 16 km, and trees (44%) and water (22%) within 80 km.

3 km
460 m
16 km
604 m
80 km
1,443 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Gwangmyeong 5.0 km · Anyang-si 7.0 km · Gunpo 10 km · Uiwang 10 km · Bucheon-si 12 km · Seoul 14 km · Ansan 16 km · Incheon 18 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 Siheungdong (37.4518°, 126.9108°, elevation 35 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).