Jenzan weather in September

In September, Jenzan sees average daytime highs of 26°C and overnight lows near 17°C, with 149 mm of rain across 8.8 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 28°C in the first days to 24°C by the end. The sky is clear or mostly clear about 30% 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 Jenzan's 9th-clearest and 12th-windiest month. For the whole year in context, see Jenzan's year-round climate.

Daytime high
26°
4th warmest
Overnight low
17°
9th coldest
Rainfall
149 mm
8.8 wet days
Daylight
12 h 12 min
6:14 AM – 6:28 PM
Cloud cover
61%
9th clearest
Wind
7 km/h
12th windiest
Solar energy
4.02 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 28°C in the first days to 24°C by the end.

A typical September day in Jenzan reaches about 26°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
22820
32819
42719
52719
62719
72719
82718
92718
102718
112618
122618
132617
142617
152617
162617
172517
182516
192516
202516
212516
222515
232415
242415
252415
262414
272414
282414
292314
302314

How September really feels in Jenzan

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.

Jenzan 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°223.91.99.80.0
Feb / -3°283.91.310.61.0
Mar13° / 526.81.211.73.8
Apr19° / 7670.112.96.6
May24° / 13°877.7013.97.2
Jun28° / 18°1259014.46.1
Jul29° / 22°22514.4014.24.6
Aug30° / 22°21114.1013.44.5
Sep26° / 17°1498.8012.26.8
Oct20° / 10°554.6011.17.4
Nov13° / 365.20.210.14.3
Dec / -3°213.90.99.60.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% 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 56%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14060
23961
33862
43961
53862
63961
73961
83961
93961
104060
114159
124060
134159
144159
154258
164357
174456
184555
194753
204753
214852
224852
234852
244951
254951
264951
274951
285149
295149
305248

Chance of precipitation in September

Any precipitation

Jenzan gets around 149 mm of rain over 8.8 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 41% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
141
240
339
439
538
638
737
837
936
1035
1134
1234
1333
1432
1531
1630
1729
1828
1926
2025
2124
2224
2323
2422
2522
2621
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 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 (%)
11133231221
22143330201
32153529191
43163628171
53173726161
64183825151
75193824130
86203923120
97213922100
10822392190
111024382080
121125371970
131326361860
141528351760
151729331650
161930321540
172131301340
182332291230
192533281130
202734261020
21293525920
22313524820
23343522710
24363521610
25383520610
26413419510
27443318410
28463217400
29493116400
30532915300

Wind in September

Winds average 7 km/h in September, the calmest month.

Across September, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:02 AM to 6:26 AM, and sunset from 6:51 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:026:51
212.86:036:49
312.76:046:48
412.76:056:46
512.76:056:45
612.66:066:43
712.66:076:42
812.56:086:40
912.56:096:39
1012.56:106:37
1112.46:106:36
1212.46:116:34
1312.36:126:33
1412.36:136:31
1512.36:146:29
1612.26:146:28
1712.26:156:26
1812.16:166:25
1912.16:176:23
2012.16:186:22
2112.06:186:20
2212.06:196:19
2312.06:206:17
2411.96:216:16
2511.96:226:14
2611.86:236:12
2711.86:236:11
2811.86:246:09
2911.76:256:08
3011.76:266:06

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.02 kWh/m².

For context, solar energy here swings from a low near 2.47 kWh/m² to a high of 5.86 kWh/m² in May across the year — September's 4.02 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.1Bright
84.0Bright
94.0Bright
104.0Bright
114.0Bright
124.0Bright
134.0Bright
144.0Bright
154.0Bright
164.0Moderate
174.0Moderate
184.0Moderate
194.0Moderate
204.0Moderate
214.0Moderate
224.0Moderate
234.0Moderate
244.0Moderate
254.0Moderate
264.0Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Hazard calendar for Jenzan

In seasonPeak

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

Jenzan'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 Jenzan?

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
6.3
Beach & pool
2nd-best month of the year

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

What to pack for Jenzan in September

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

In September, Jenzan sees daytime highs around 26°C and nights near 17°C. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Jenzan in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Jenzan 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 highModerateAug 15UV 9Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Jenzan 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 Jenzan is worst in March — around 63 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (August, 35 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModeratePoorMar 1762 µg/m³Aug 935 µg/m³
PM2.5 (µg/m³)Level
Jan49Poor
Feb54Poor
Mar63Unhealthy
Apr55Unhealthy
May48Poor
Jun44Poor
Jul35Moderate
Aug35Moderate
Sep41Poor
Oct48Poor
Nov53Poor
Dec46Poor
Location & terrain

Where is Jenzan?

Jenzan sits at 36.2°N, 128.3°E, 48 m above sea level, in South Korea. The nearest listed city is Gumi, 15 km away.

MungyeongYeongdongYecheon

Topography around Jenzan

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

Within 3 km, the terrain around Jenzan has significant variations in elevation — a maximum elevation change of 456 m around an average of 98 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 873 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,578 m.

The land around Jenzan is covered by trees (45%) and cropland (34%) within 3 km, trees (60%) and cropland (24%) within 16 km, and trees (79%) within 80 km.

3 km
456 m
16 km
873 m
80 km
1,578 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Gumi 15 km · Gimcheon 21 km · Sangju 23 km · Kunwi 25 km · Waegwan 29 km · Mungyeong 40 km · Yeongdong 47 km · Yecheon 48 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 Jenzan (36.2408°, 128.2975°, elevation 48 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).