Hayang weather in September

In September, Hayang sees average daytime highs of 25°C and overnight lows near 17°C, with 135 mm of rain across 8.7 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 27% 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 Hayang's 9th-clearest and 11th-windiest month. For the whole year in context, see Hayang's year-round climate.

Daytime high
25°
4th warmest
Overnight low
17°
9th coldest
Rainfall
135 mm
8.7 wet days
Daylight
12 h 12 min
6:12 AM – 6:26 PM
Cloud cover
63%
9th clearest
Wind
8 km/h
11th windiest
Solar energy
3.92 kWh/m²
Travel score
6.8
out of 10

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 Hayang 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 22°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)
12820
22719
32719
42719
52719
62719
72718
82718
92618
102618
112618
122617
132617
142617
152517
162517
172516
182516
192516
202516
212515
222415
232415
242415
252414
262414
272414
282314
292314
302313

How September really feels in Hayang

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.

Hayang 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 / -4°223.61.59.80.0
Feb / -2°293.91.110.61.2
Mar13° / 576.71.211.73.9
Apr19° / 777.20.112.96.5
May24° / 13°887.5013.97.2
Jun27° / 18°1238.7014.46.4
Jul29° / 22°20513.6014.24.9
Aug30° / 22°19013.6013.44.7
Sep25° / 17°1358.7012.26.8
Oct20° / 10°554.4011.17.4
Nov13° / 354.50.110.14.4
Dec / -2°213.70.89.60.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 57%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23763
33763
43763
53763
63862
73862
83862
93961
103862
113961
123961
134060
144159
154159
164258
174258
184456
194456
204555
214654
224753
234753
244753
254852
264852
274852
284951
294951
305050

Chance of precipitation in September

Any precipitation

Hayang gets around 135 mm of rain over 8.7 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 29% and peaks near 38% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
138
238
337
437
536
636
736
835
935
1034
1134
1233
1332
1431
1530
1629
1728
1827
1926
2025
2124
2224
2323
2423
2523
2622
2722
2821
2921
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 30% of days. Sticky, muggy-or-worse air turns up on roughly 23% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11133330211
22143429191
32153528181
43163627171
53183726151
64193825141
75203824130
86213923110
97223922100
10823382190
111024382080
121125371970
131327361860
141528351760
151729341650
161929321450
172130311340
182331301240
192532291130
202732281030
21303326920
22323325820
23343424720
24363422620
25393321610
26413320510
27443219510
28463118410
29493016410
30522915400

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.

0246810151015202530
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 6:00 AM to 6:24 AM, and sunset from 6:48 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:006:48
212.86:016:47
312.76:026:45
412.76:036:44
512.66:046:42
612.66:046:41
712.66:056:39
812.56:066:38
912.56:076:36
1012.56:086:35
1112.46:086:33
1212.46:096:32
1312.36:106:30
1412.36:116:29
1512.36:126:27
1612.26:126:26
1712.26:136:24
1812.16:146:23
1912.16:156:21
2012.16:166:20
2112.06:166:18
2212.06:176:17
2312.06:186:15
2411.96:196:13
2511.96:206:12
2611.86:206:10
2711.86:216:09
2811.86:226:07
2911.76:236:06
3011.76:246:04

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.92 kWh/m².

For context, solar energy here swings from a low near 2.57 kWh/m² to a high of 5.82 kWh/m² in May across the year — September's 3.92 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.0Bright
44.0Bright
54.0Bright
64.0Bright
74.0Moderate
84.0Moderate
94.0Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.9Moderate
143.9Moderate
153.9Moderate
163.9Moderate
173.9Moderate
183.9Moderate
193.9Moderate
203.9Moderate
213.9Moderate
223.9Moderate
233.9Moderate
243.9Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.8Moderate
Planning a trip in September

Hazard calendar for Hayang

In seasonPeak

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

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

Hayang'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 September a good time to visit Hayang?

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

6.8
Sightseeing
3rd-best month of the year
6.2
Beach & pool
2nd-best month of the year

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

What to pack for Hayang in September

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

In September, Hayang 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 Hayang 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 Hayang peaks around August 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 highHighModerateAug 15UV 9Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Hayang 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 Hayang is worst in March — around 66 µg/m³ PM2.5 (unhealthy), about 1.9× the cleanest month (August, 34 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorPoorMar 1865 µg/m³Aug 1535 µg/m³
PM2.5 (µg/m³)Level
Jan51Poor
Feb57Unhealthy
Mar66Unhealthy
Apr60Unhealthy
May55Poor
Jun47Poor
Jul37Poor
Aug34Moderate
Sep39Poor
Oct47Poor
Nov56Unhealthy
Dec47Poor
Location & terrain

Where is Hayang?

Hayang sits at 35.9°N, 128.8°E, 57 m above sea level, in South Korea. The nearest listed city is Eisen, 12 km away.

GyeongjuWaegwanKunwiYeonil

Topography around Hayang

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

Within 3 km, the terrain around Hayang has significant variations in elevation — a maximum elevation change of 263 m around an average of 79 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,147 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,396 m.

The land around Hayang is covered by cropland (34%), trees (25%) and artificial surfaces (24%) within 3 km, trees (57%) and cropland (21%) within 16 km, and trees (68%) within 80 km.

3 km
263 m
16 km
1,147 m
80 km
1,396 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Eisen 12 km · Gyeongsan-si 12 km · Daegu 21 km · Hwawŏn 31 km · Gyeongju 36 km · Waegwan 39 km · Kunwi 42 km · Yeonil 46 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 Hayang (35.9133°, 128.82°, elevation 57 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). 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).