Changsu weather in October

In October, Changsu sees average daytime highs of 19°C and overnight lows near 9°C, with 61 mm of rain across 6.1 wet days and about 11.1 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 16°C by the end. The sky is clear or mostly clear about 47% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 36 min by month's end. Set against the rest of the year, October is Changsu's 1st-clearest and 9th-windiest month. For the whole year in context, see Changsu's year-round climate.

Daytime high
19°
6th warmest
Overnight low
7th coldest
Rainfall
61 mm
6.1 wet days
Daylight
11 h 06 min
6:43 AM – 5:47 PM
Cloud cover
45%
1st clearest
Wind
7 km/h
9th windiest
Solar energy
3.79 kWh/m²
Travel score
6.8
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 21°C in the first days to 16°C by the end.

A typical October day in Changsu reaches about 19°C in the afternoon and slips back to 9°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 23°C. Set against its neighbours, October runs about 5°C cooler than September and about 7°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12212
22212
32112
42111
52111
62111
72111
82110
92010
102010
112010
122010
13209
14199
15199
16199
17198
18198
19188
20188
21187
22187
23187
24177
25177
26176
27176
28166
29166
30166
31165

How October really feels in Changsu

Once humidity and wind are folded in, October 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

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

Changsu weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -6°316.15.19.90.0
Feb / -4°395.63.210.70.3
Mar11° / 658.12.711.72.7
Apr17° / 898.40.412.95.6
May22° / 11°978.7013.96.9
Jun25° / 16°15511.4014.46.3
Jul27° / 21°25017.3014.25.0
Aug28° / 21°21116.7013.35.0
Sep24° / 16°1419.9012.26.7
Oct19° / 616.1011.16.8
Nov12° / 4870.510.13.3
Dec / -4°336.33.69.60.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of October, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25347
35446
45545
55644
65743
75842
86040
96040
106139
116238
126238
136238
146238
156337
166337
176436
186436
196436
206535
216634
226634
236733
246733
256832
266931
276931
286931
297030
306931
316832

Chance of precipitation in October

Any precipitation

Changsu gets around 61 mm of rain over 6.1 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 20% and peaks near 24% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
124
223
323
423
522
622
721
821
920
1020
1119
1219
1318
1418
1518
1618
1718
1818
1918
2018
2118
2218
2318
2418
2518
2618
2719
2819
2919
3020
3120

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 88% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16620113
26819103
37018102
4721792
5751582
6771472
7781372
8811261
9831061
1085951
1187841
1289740
1390730
1491630
1591630
1693520
1793520
1894420
1995410
2096310
2196310
2296310
2396310
2497300
2598200
2698200
2798200
2898200
2998200
3098200
3198200

Wind in October

Winds average 7 km/h in October.

Across October, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
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
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over October. Sunrise moves from 6:30 AM to 6:57 AM, and sunset from 6:08 PM to 5:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:306:08
211.66:306:07
311.66:316:05
411.56:326:04
511.56:336:02
611.56:346:01
711.46:356:00
811.46:355:58
911.36:365:57
1011.36:375:55
1111.36:385:54
1211.26:395:53
1311.26:405:51
1411.26:415:50
1511.16:425:49
1611.16:435:47
1711.06:435:46
1811.06:445:45
1911.06:455:44
2010.96:465:42
2110.96:475:41
2210.96:485:40
2310.86:495:39
2410.86:505:38
2510.86:515:37
2610.76:525:35
2710.76:535:34
2810.76:545:33
2910.66:555:32
3010.66:565:31
3110.66:575:30

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.79 kWh/m².

For context, solar energy here swings from a low near 2.4 kWh/m² to a high of 5.83 kWh/m² in May across the year — October's 3.79 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.0Bright
24.0Bright
34.0Bright
44.0Bright
54.0Moderate
64.0Moderate
74.0Moderate
84.0Moderate
94.0Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.9Moderate
143.9Moderate
153.8Moderate
163.8Moderate
173.8Moderate
183.8Moderate
193.7Moderate
203.7Moderate
213.7Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.4Moderate
293.4Moderate
303.4Moderate
313.3Moderate
Planning a trip in October

Hazard calendar for Changsu

In seasonPeak

None of Changsu's seasonal hazards are active in October. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Changsu'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 October a good time to visit Changsu?

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

6.8
Sightseeing
2nd-best month of the year
2.8
Beach & pool
6th-best month of the year

October is a reasonable time to visit Changsu for sightseeing.

What to pack for Changsu in October

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

In October, Changsu sees daytime highs around 19°C and nights near 9°C. Little to plan around — just the basics. About 6 days see rain.

UV index in Changsu in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Changsu peaks around August 16 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 highHighModerateAug 16UV 9Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar6High
Apr7High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Changsu in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Changsu 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 Changsu?

Changsu sits at 35.6°N, 127.5°E, 411 m above sea level, in South Korea. The nearest listed city is Jinan-gun, 18 km away.

JeonjuWanjuKuryeKinzanNamsa

Topography around Changsu

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

Within 3 km, the terrain around Changsu has significant variations in elevation — a maximum elevation change of 588 m around an average of 527 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,136 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,879 m.

The land around Changsu is covered by trees (55%) and cropland (25%) within 3 km, trees (80%) within 16 km, and trees (74%) within 80 km.

3 km
588 m
16 km
1,136 m
80 km
1,879 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Jinan-gun 18 km · Imsil 22 km · Nangen 29 km · Jeonju 38 km · Wanju 40 km · Kurye 49 km · Kinzan 51 km · Namsa 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 Changsu (35.6484°, 127.5152°, elevation 411 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).