Kwail-ŭp weather in September

In September, Kwail-ŭp sees average daytime highs of 23°C and overnight lows near 18°C, with 85 mm of rain across 6.3 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 21°C by the end. The sky is clear or mostly clear about 44% of the time in September, and the air most often feels humid.

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 Kwail-ŭp's 5th-clearest and 10th-windiest month. For the whole year in context, see Kwail-ŭp's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
18°
10th coldest
Rainfall
85 mm
6.3 wet days
Daylight
12 h 12 min
6:27 AM – 6:42 PM
Cloud cover
49%
5th clearest
Wind
12 km/h
10th windiest
Solar energy
4.63 kWh/m²
Travel score
7.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 21°C by the end.

A typical September day in Kwail-ŭp reaches about 23°C in the afternoon and slips back to 18°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 25°C. Set against its neighbours, September runs about 3°C cooler than August and about 6°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12520
22520
32520
42520
52519
62519
72519
82419
92419
102419
112419
122418
132418
142418
152418
162318
172318
182317
192317
202317
212317
222317
232216
242216
252216
262216
272216
282115
292115
302115

How September really feels in Kwail-ŭp

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.

Kwail-ŭp weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°143.63.39.60.0
Feb / -3°183.42.110.50.0
Mar / 244.10.911.70.9
Apr12° / 466.20.1133.7
May18° / 11°847.1014.16.1
Jun22° / 17°878014.67.0
Jul25° / 21°22013.6014.46.1
Aug26° / 22°18811.9013.56.3
Sep23° / 18°856.3012.37.5
Oct18° / 12°4360116.4
Nov10° / 487.70.99.92.6
Dec / -2°276.63.59.40.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% 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 41%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25545
35545
45644
55644
65644
75644
85644
95644
105644
115644
125743
135743
145842
155842
165941
175941
186040
196040
206139
216139
226238
236139
246139
256238
266238
276238
286238
296337
306238

Chance of precipitation in September

Any precipitation

Kwail-ŭp gets around 85 mm of rain over 6.3 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 21% and peaks near 31% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
131
230
329
428
527
625
724
823
922
1021
1121
1220
1319
1419
1519
1618
1718
1818
1918
2018
2118
2218
2319
2419
2519
2619
2719
2819
2919
3019

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 30% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1282345221
2292444200
33102543180
44112642170
54122841150
65132940130
76143039120
87153038100
9816313690
10917323480
111119323270
121220323060
131421322850
141523322640
151624322430
161825322230
171926322020
182128311820
192229311710
202430301510
212531301310
222732291210
232933281000
24303427900
25333426700
26353524600
27383523500
28403421400
29433420300
30463318300

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

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 6:13 AM to 6:40 AM, and sunset from 7:06 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:137:06
212.86:147:04
312.86:157:03
412.86:167:01
512.76:177:00
612.76:186:58
712.66:196:56
812.66:206:55
912.56:216:53
1012.56:216:51
1112.56:226:50
1212.46:236:48
1312.46:246:47
1412.36:256:45
1512.36:266:43
1612.26:276:42
1712.26:286:40
1812.26:296:38
1912.16:306:37
2012.16:316:35
2112.06:316:33
2212.06:326:32
2311.96:336:30
2411.96:346:28
2511.96:356:27
2611.86:366:25
2711.86:376:24
2811.76:386:22
2911.76:396:20
3011.66:406:19

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.63 kWh/m².

For context, solar energy here swings from a low near 2.05 kWh/m² to a high of 6.04 kWh/m² in May across the year — September's 4.63 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.4Bright
264.4Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Kwail-ŭp

In seasonPeak

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

Kwail-ŭp sits in the Pacific typhoon belt; the season peaks July–October.

Kwail-ŭp's rainy season runs July–August, 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 Kwail-ŭp?

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

7.5
Sightseeing
1st-best month of the year
5.9
Beach & pool
2nd-best month of the year

September is one of the better times to visit Kwail-ŭp for general sightseeing.

What to pack for Kwail-ŭp in September

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

In September, Kwail-ŭp sees daytime highs around 23°C and nights near 18°C. Worth packing: light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Kwail-ŭp 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 15 km away) is warmest in August at about 22°C and coldest in February near 4°C.

It's comfortable for a long swim from Jul 15 to Sep 29 — about 2.5 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan6Bracing
Feb4Bracing
Mar5Bracing
Apr7Bracing
May11Bracing
Jun16Cool
Jul20Refreshing
Aug22Refreshing
Sep21Refreshing
Oct18Cool
Nov15Bracing
Dec10Bracing

UV index in Kwail-ŭp 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 Kwail-ŭp peaks around August 13 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 20 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowAug 13UV 8Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7High
Jun6High
Jul8Very high
Aug8Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Kwail-ŭp 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 Kwail-ŭp is worst in November — around 82 µg/m³ PM2.5 (unhealthy), about 2.1× the cleanest month (July, 40 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyNov 1981 µg/m³Jul 2240 µg/m³
PM2.5 (µg/m³)Level
Jan80Unhealthy
Feb78Unhealthy
Mar80Unhealthy
Apr66Unhealthy
May54Poor
Jun46Poor
Jul40Poor
Aug41Poor
Sep58Unhealthy
Oct72Unhealthy
Nov82Unhealthy
Dec77Unhealthy
Location & terrain

Where is Kwail-ŭp?

Kwail-ŭp sits at 38.4°N, 125.0°E, 19 m above sea level, in North Korea. The nearest listed city is Songhwa, 14 km away.

Chaeryŏng-niŬnch’ŏn-ŭpSinch’ŏn-ŭpAnak

Topography around Kwail-ŭp

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

Within 3 km, the terrain around Kwail-ŭp has only modest variations in elevation — a maximum elevation change of 103 m around an average of 27 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 624 m; within 80 km, large variations in elevation — a maximum elevation change of 1,037 m.

The land around Kwail-ŭp is covered by cropland (71%) within 3 km, cropland (34%), trees (33%) and water (28%) within 16 km, and water (46%) and cropland (32%) within 80 km.

3 km
103 m
16 km
624 m
80 km
1,037 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Songhwa 14 km · Ŭllyul 17 km · Changyŏn 23 km · Samch’ŏn 28 km · Chaeryŏng-ni 37 km · Ŭnch’ŏn-ŭp 38 km · Sinch’ŏn-ŭp 42 km · Anak 42 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 Kwail-ŭp (38.4461°, 125.0186°, elevation 19 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).