Yeongdong weather in September

In September, Yeongdong sees average daytime highs of 25°C and overnight lows near 17°C, with 142 mm of rain across 8.9 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 27°C in the first days to 23°C by the end. The sky is clear or mostly clear about 31% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Yeongdong's 9th-clearest and 11th-windiest month. For the whole year in context, see Yeongdong's year-round climate.

Daytime high
25°
4th warmest
Overnight low
17°
9th coldest
Rainfall
142 mm
8.9 wet days
Daylight
12 h 12 min
6:16 AM – 6:30 PM
Cloud cover
60%
9th clearest
Wind
8 km/h
11th windiest
Solar energy
4.12 kWh/m²
Travel score
6.9
out of 10

Yeongdong is human settlement in South Korea.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 27°C in the first days to 23°C by the end.

A typical September day in Yeongdong reaches about 25°C in the afternoon and slips back to 17°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 29°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12720
22719
32719
42719
52719
62719
72618
82618
92618
102618
112618
122617
132617
142517
152517
162517
172516
182516
192516
202416
212415
222415
232415
242415
252414
262314
272314
282314
292314
302313

How September really feels in Yeongdong

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

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Yeongdong weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°254.73.29.80.0
Feb / -3°324.62.110.60.6
Mar12° / 537.41.911.73.3
Apr18° / 787.60.212.96.2
May23° / 12°877.8013.97.2
Jun27° / 18°1259.5014.46.4
Jul29° / 22°22515.4014.24.8
Aug29° / 22°19814.5013.44.8
Sep25° / 17°1428.9012.26.9
Oct20° / 10°565011.17.2
Nov12° / 405.90.310.13.8
Dec / -3°244.51.79.60.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13862
23862
33862
43961
54060
63961
74060
84159
94159
104159
114159
124258
134357
144357
154456
164555
174753
184753
194753
204852
214951
224951
235050
245050
255149
265050
275050
285149
295149
305347

Chance of precipitation in September

Any precipitation

Yeongdong gets around 142 mm of rain over 8.9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 43% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
143
242
341
440
539
638
737
836
936
1035
1134
1233
1332
1431
1530
1629
1728
1827
1926
2025
2124
2224
2323
2423
2522
2622
2721
2821
2920
3020

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 28% of days. Sticky, muggy-or-worse air turns up on roughly 21% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11153231201
22173429181
32183528161
43193627150
54203726130
65213725120
76223824110
87233823100
9824382180
101024382070
111125371970
121326371860
131627351750
141828341640
152029321540
162330311430
172530291330
182731271220
193032261120
203232241010
21353223910
22373222810
23403220710
24423219610
25453118510
26473117500
27503016400
28522915400
29542814400
30582613300

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 48 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over September. Sunrise moves from 6:04 AM to 6:28 AM, and sunset from 6:53 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:046:53
212.86:056:51
312.76:066:50
412.76:076:48
512.76:086:47
612.66:086:45
712.66:096:44
812.56:106:42
912.56:116:41
1012.56:126:39
1112.46:126:38
1212.46:136:36
1312.36:146:35
1412.36:156:33
1512.36:166:32
1612.26:166:30
1712.26:176:28
1812.16:186:27
1912.16:196:25
2012.16:206:24
2112.06:206:22
2212.06:216:21
2312.06:226:19
2411.96:236:18
2511.96:246:16
2611.86:256:15
2711.86:256:13
2811.86:266:12
2911.76:276:10
3011.76:286:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.12 kWh/m².

For context, solar energy here swings from a low near 2.39 kWh/m² to a high of 5.87 kWh/m² in May across the year — September's 4.12 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.1Bright
244.1Bright
254.0Bright
264.0Bright
274.0Bright
284.0Bright
294.0Bright
304.0Bright
Planning a trip in September

Hazard calendar for Yeongdong

In seasonPeak

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

Yeongdong'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 September a good time to visit Yeongdong?

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

6.9
Sightseeing
3rd-best month of the year
6.1
Beach & pool
2nd-best month of the year

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

What to pack for Yeongdong in September

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

In September, Yeongdong sees daytime highs around 25°C and nights near 17°C. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Yeongdong in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Yeongdong peaks around August 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. 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 highModerateAug 15UV 9Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Yeongdong in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Yeongdong is worst in March — around 69 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (July, 39 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyMar 1668 µg/m³Jul 2239 µg/m³
PM2.5 (µg/m³)Level
Jan57Unhealthy
Feb61Unhealthy
Mar69Unhealthy
Apr59Unhealthy
May52Poor
Jun49Poor
Jul39Poor
Aug40Poor
Sep51Poor
Oct58Unhealthy
Nov61Unhealthy
Dec54Poor
Location & terrain

Where is Yeongdong?

Yeongdong sits at 36.2°N, 127.8°E, 130 m above sea level, in South Korea. The nearest listed city is Okcheon, 23 km away.

DaejeonSangjuJenzanGumiJinan-gun

Topography around Yeongdong

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

Within 3 km, the terrain around Yeongdong has significant variations in elevation — a maximum elevation change of 269 m around an average of 182 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,111 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,594 m.

The land around Yeongdong is covered by trees (65%) within 3 km, trees (81%) within 16 km, and trees (74%) within 80 km.

3 km
269 m
16 km
1,111 m
80 km
1,594 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Okcheon 23 km · Kinzan 27 km · Gimcheon 31 km · Daejeon 40 km · Sangju 44 km · Jenzan 47 km · Gumi 51 km · Jinan-gun 53 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 Yeongdong (36.175°, 127.7764°, elevation 130 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).