Changam-ch’on weather in September

In September, Changam-ch’on sees average daytime highs of 22°C and overnight lows near 13°C, with 103 mm of rain across 9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 20°C by the end. The sky is clear or mostly clear about 35% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Changam-ch’on's 8th-clearest and 9th-windiest month. For the whole year in context, see Changam-ch’on's year-round climate.

Daytime high
22°
4th warmest
Overnight low
13°
9th coldest
Rainfall
103 mm
9 wet days
Daylight
12 h 18 min
6:11 AM – 6:27 PM
Cloud cover
56%
8th clearest
Wind
7 km/h
9th windiest
Solar energy
4.34 kWh/m²
Travel score
6.7
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 23°C in the first days to 20°C by the end.

A typical September day in Changam-ch’on reaches about 22°C in the afternoon and slips back to 13°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 25°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12416
22416
32316
42315
52315
62315
72315
82315
92314
102214
112214
122214
132213
142213
152213
162213
172112
182112
192112
202112
212112
222111
232011
242011
252011
262010
272010
282010
292010
30199

How September really feels in Changam-ch’on

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.

Changam-ch’on 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-1° / -11°276.57.59.40.0
Feb / -10°235.66.410.40.0
Mar / -4°336.45.411.70.9
Apr13° / 447.31.6134.1
May19° / 699014.26.1
Jun22° / 14°719014.86.5
Jul25° / 18°15512.8014.66.2
Aug25° / 18°17714.9013.65.9
Sep22° / 13°1039012.36.7
Oct16° / 486.50.210.95.7
Nov / -1°456.93.59.71.4
Dec / -8°326.36.49.10.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% 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 51%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14159
24159
34357
44357
54456
64357
74456
84456
94555
104456
114555
124654
134753
144753
154852
164852
175050
185050
195149
205248
215347
225347
235446
245545
255644
265743
275842
285842
295941
306040

Chance of precipitation in September

Any precipitation

Changam-ch’on gets around 103 mm of rain over 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 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
438
537
636
735
834
933
1031
1131
1230
1329
1428
1528
1628
1728
1827
1927
2027
2127
2227
2326
2426
2526
2626
2726
2826
2926
3026

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 44% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
182639234
2102738213
3112938203
4133037183
5153136162
6173235142
7193334132
8213432111
9233531101
1026362981
1129362771
1232362661
1335362450
1439352240
1542352030
1645341820
1748341620
1851331510
1953331310
2056321110
216031900
226230800
236528700
246827500
257125400
267423300
277522300
287820200
298018200
308217100

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 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
16calm
26calm
36calm
46calm
56calm
66calm
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 54 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over September. Sunrise moves from 5:56 AM to 6:26 AM, and sunset from 6:53 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:566:53
212.95:576:51
312.95:586:50
412.85:596:48
512.86:006:46
612.76:016:45
712.76:026:43
812.66:036:41
912.66:046:39
1012.56:056:38
1112.56:066:36
1212.46:076:34
1312.46:086:32
1412.46:096:31
1512.36:106:29
1612.36:116:27
1712.26:126:25
1812.26:136:24
1912.16:146:22
2012.16:156:20
2112.06:166:18
2212.06:176:17
2311.96:186:15
2411.96:196:13
2511.96:206:11
2611.86:216:10
2711.86:226:08
2811.76:236:06
2911.76:256:04
3011.66:266:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.34 kWh/m².

For context, solar energy here swings from a low near 2.15 kWh/m² to a high of 5.85 kWh/m² in May across the year — September's 4.34 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.1Bright
304.1Bright
Planning a trip in September

Hazard calendar for Changam-ch’on

In seasonPeak

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

Changam-ch’on sits in the Pacific typhoon belt; the season peaks July–October.

Changam-ch’on's rainy season runs July–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 Changam-ch’on?

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

6.7
Sightseeing
1st-best month of the year
4.4
Beach & pool
4th-best month of the year

September is a reasonable time to visit Changam-ch’on for sightseeing.

What to pack for Changam-ch’on in September

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

In September, Changam-ch’on sees daytime highs around 22°C and nights near 13°C. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near Changam-ch’on in September

The nearest coast averages about 21°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 27 km away) is warmest in August at about 23°C and coldest in February near 5°C.

It's comfortable for a long swim from Jul 15 to Sep 22 — about 2.3 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan6Bracing
Feb5Bracing
Mar5Bracing
Apr7Bracing
May11Bracing
Jun16Cool
Jul20Refreshing
Aug23Refreshing
Sep21Refreshing
Oct17Cool
Nov13Bracing
Dec8Bracing

UV index in Changam-ch’on in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Changam-ch’on peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highModerateLowAug 18UV 8Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun7Very high
Jul7High
Aug8Very high
Sep7Very high
Oct5Moderate
Nov2Moderate
Dec1Low

Air quality in Changam-ch’on 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 Changam-ch’on is worst in April — around 47 µg/m³ PM2.5 (poor), about 2.7× the cleanest month (August, 17 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 947 µg/m³Aug 2217 µg/m³
PM2.5 (µg/m³)Level
Jan29Moderate
Feb36Poor
Mar46Poor
Apr47Poor
May36Poor
Jun25Moderate
Jul20Moderate
Aug17Moderate
Sep18Moderate
Oct24Moderate
Nov26Moderate
Dec23Moderate
Location & terrain

Where is Changam-ch’on?

Changam-ch’on sits at 40.6°N, 128.8°E, 141 m above sea level, in North Korea. The nearest listed city is Iwŏn-ŭp, 33 km away.

Iwŏn-ŭpKiljuHwadaeKapsan-ŭpMyŏngch’ŏnSinp’oYuktae-dongMyŏnggan-dong

Topography around Changam-ch’on

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Changam-ch’on.

Within 3 km, the terrain around Changam-ch’on has large variations in elevation — a maximum elevation change of 842 m around an average of 325 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,555 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,283 m.

The land around Changam-ch’on is covered by trees (64%) and grassland (20%) within 3 km, trees (76%) within 16 km, and trees (57%) and water (25%) within 80 km.

3 km
842 m
16 km
1,555 m
80 km
2,283 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Iwŏn-ŭp 33 km · Kilju 61 km · Hwadae 66 km · Kapsan-ŭp 68 km · Myŏngch’ŏn 75 km · Sinp’o 80 km · Yuktae-dong 83 km · Myŏnggan-dong 84 km

North Korea travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / F
220 V · 50 Hz
Safe drinking water
67%
of population, 2023
Road deaths
24.2
per 100k/yr, 2019
Income group
Low
World Bank

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 Changam-ch’on (40.6061°, 128.7819°, elevation 141 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).