Goyang-si weather in August

In August, Goyang-si sees average daytime highs of 29°C and overnight lows near 22°C, with 264 mm of rain across 14.9 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 30°C in the first days to 28°C by the end. The sky is clear or mostly clear about 26% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 14 hours at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Goyang-si's 11th-clearest and 9th-windiest month. For the whole year in context, see Goyang-si's year-round climate.

Daytime high
29°
1st warmest
Overnight low
22°
12th coldest
Rainfall
264 mm
14.9 wet days
Daylight
13 h 30 min
5:53 AM – 7:21 PM
Cloud cover
65%
11th clearest
Wind
8 km/h
9th windiest
Solar energy
4.4 kWh/m²
Travel score
4.7
out of 10

Goyang-si is city in Gyeonggi Province, South Korea.

Density
3,972/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

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

A typical August day in Goyang-si 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 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)
13024
23024
33024
43024
53024
63024
73024
83023
93023
103023
113023
123023
133023
143023
153023
163023
172923
182922
192922
202922
212922
222922
232922
242921
252921
262821
272821
282821
292820
302820
312820

How August really feels in Goyang-si

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.

Goyang-si 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 / -7°183.52.39.70.0
Feb / -5°233.91.710.50.3
Mar11° / 355.70.911.72.9
Apr17° / 667.20.112.95.9
May23° / 13°9980147.2
Jun27° / 18°1259014.66.6
Jul28° / 22°31316.3014.34.9
Aug29° / 22°26414.9013.54.7
Sep26° / 17°1207.9012.37.0
Oct20° / 525.30117.1
Nov11° / 4770.3103.2
Dec / -5°224.81.69.40.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 15% of August, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23961
33961
44159
54159
64159
74159
84159
94159
104258
114159
124159
134159
144159
154159
164159
174159
184060
194060
204159
214159
224060
234060
244159
254159
264258
274258
284357
294357
304456
314555

Chance of precipitation in August

Any precipitation

Goyang-si gets around 264 mm of rain over 14.9 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 48% and peaks near 54% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
154
254
353
453
553
652
752
851
951
1050
1150
1249
1349
1448
1548
1647
1747
1846
1946
2046
2146
2246
2345
2445
2545
2644
2744
2843
2942
3042
3141

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 43% of days. Sticky, muggy-or-worse air turns up on roughly 91% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1001125037
2001124938
3001124839
4001124839
5001124740
6001134640
7002134639
8002144539
9002154538
10002164537
11003174535
12003194533
13003204531
14004214529
15004234527
16005254525
17015264523
18016284421
19017294419
20018314317
21018324315
220210334213
230211354111
241212364010
25121337398
26131438377
27131538366
28141739345
29151839334
30152039314
31162239293

Wind in August

Winds average 8 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
98calm
108calm
118calm
128calm
138calm
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 14 hours at the start of August to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over August. Sunrise moves from 5:40 AM to 6:06 AM, and sunset from 7:38 PM to 6:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.05:407:38
213.95:417:37
313.95:427:36
413.95:427:35
513.85:437:34
613.85:447:33
713.85:457:31
813.75:467:30
913.75:477:29
1013.75:487:28
1113.65:487:27
1213.65:497:26
1313.65:507:24
1413.55:517:23
1513.55:527:22
1613.55:537:21
1713.45:547:19
1813.45:557:18
1913.45:557:17
2013.35:567:15
2113.35:577:14
2213.25:587:13
2313.25:597:11
2413.26:007:10
2513.16:017:08
2613.16:027:07
2713.06:027:05
2813.06:037:04
2913.06:047:02
3012.96:057:01
3112.96:066:59

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.4 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 — August's 4.4 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
314.3Bright
Planning a trip in August

Hazard calendar for Goyang-si

In seasonPeak

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

Goyang-si sits in the Pacific typhoon belt; the season peaks July–October.

Goyang-si'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 August a good time to visit Goyang-si?

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

4.7
Sightseeing
7th-best month of the year
6.1
Beach & pool
3rd-best month of the year

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

What to pack for Goyang-si in August

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

In August, Goyang-si sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 15 days see rain.

light clothesrain gear

Sea temperature near Goyang-si in August

The nearest coast averages about 24°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 36 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 Goyang-si in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Goyang-si 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 Goyang-si 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 Goyang-si 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 Goyang-si?

Goyang-si sits at 37.7°N, 126.8°E, 19 m above sea level, in South Korea. The nearest listed city is Gimpo-si, 11 km away.

Topography around Goyang-si

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

Within 3 km, the terrain around Goyang-si has only modest variations in elevation — a maximum elevation change of 98 m around an average of 33 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 778 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,443 m.

The land around Goyang-si is covered by trees (41%) and artificial surfaces (36%) within 3 km, trees (39%) and artificial surfaces (36%) within 16 km, and trees (43%) and water (22%) within 80 km.

3 km
98 m
16 km
778 m
80 km
1,443 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Gimpo-si 11 km · Seoul 16 km · Bucheon-si 18 km · Gwangmyeong 20 km · Uijeongbu-si 21 km · Munsan 23 km · Siheungdong 24 km · Incheon 25 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 Goyang-si (37.6564°, 126.835°, elevation 19 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).