Yŏnsa-ŭp weather in September

In September, Yŏnsa-ŭp sees average daytime highs of 19°C and overnight lows near 8°C, with 70 mm of precipitation across 7.8 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 17°C by the end. The sky is clear or mostly clear about 37% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Yŏnsa-ŭp's 6th-clearest and 9th-windiest month. For the whole year in context, see Yŏnsa-ŭp's year-round climate.

Daytime high
19°
4th warmest
Overnight low
9th coldest
Precipitation
70 mm
7.8 wet days
Daylight
12 h 18 min
6:10 AM – 6:27 PM
Cloud cover
54%
6th clearest
Wind
7 km/h
9th windiest
Solar energy
4.28 kWh/m²
Travel score
6.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 21°C in the first days to 17°C by the end.

A typical September day in Yŏnsa-ŭp reaches about 19°C in the afternoon and slips back to 8°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 23°C. Set against its neighbours, September runs about 5°C cooler than August and about 7°C warmer than October.

10°20°151015202530
Avg high (°C)Avg low (°C)
12111
22111
32111
42111
52110
62110
72010
82010
9209
10209
11209
12208
13198
14198
15198
16197
17197
18187
19187
20186
21186
22186
23186
24175
25175
26175
27175
28174
29164
30164

How September really feels in Yŏnsa-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.

Yŏnsa-ŭp weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-8° / -19°82.12.89.30.0
Feb-5° / -17°143.54.210.30.0
Mar / -10°266.76.311.70.0
Apr10° / -1°519.95.613.12.4
May17° / 8914.51.114.34.8
Jun21° / 11°8914.40155.6
Jul24° / 15°13315.2014.76.0
Aug23° / 15°12513013.76.2
Sep19° / 707.8012.36.3
Oct12° / 376.32.110.93.5
Nov / -8°285.759.60.1
Dec-6° / -16°123.4490.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24753
34852
44951
54951
65149
75149
85149
95248
105347
115347
125446
135446
145545
155644
165644
175743
185743
195743
205842
215842
225842
235941
245941
255941
265941
276040
286040
296040
306040

Chance of precipitation in September

Any precipitationSnow

Yŏnsa-ŭp gets around 70 mm of rain and snow over 7.8 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 27% and peaks near 34% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)Snow chance (%)
1340
2340
3330
4330
5320
6310
7310
8300
9290
10290
11280
12280
13270
14270
15270
16260
17260
18250
19250
20240
21240
22240
23230
24231
25231
26221
27221
28221
29222
30222

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 88% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1632791
2642691
3672481
4702271
5722161
6751951
7771850
8801640
9831430
10841330
11861220
12881020
1390910
1491810
1592710
1693610
1795500
1896400
1996400
2097300
2198200
2298200
2398200
2499100
2599100
2699100
27100000
28100000
29100000
30100000

Wind in September

Winds average 7 km/h in September.

Across September, 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.

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
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours 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 84 minutes over September. Sunrise moves from 5:54 AM to 6:25 AM, and sunset from 6:53 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:546:53
212.95:556:52
312.95:566:50
412.85:576:48
512.85:586:46
612.85:596:45
712.76:006:43
812.76:016:41
912.66:026:39
1012.66:046:37
1112.56:056:36
1212.56:066:34
1312.46:076:32
1412.46:086:30
1512.36:096:28
1612.36:106:27
1712.26:116:25
1812.26:126:23
1912.16:136:21
2012.16:146:19
2112.06:156:18
2212.06:166:16
2311.96:186:14
2411.96:196:12
2511.86:206:10
2611.86:216:08
2711.76:226:07
2811.76:236:05
2911.76:246:03
3011.66:256:01

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.28 kWh/m².

For context, solar energy here swings from a low near 2.07 kWh/m² to a high of 5.52 kWh/m² in May across the year — September's 4.28 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.4Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.1Bright
264.1Bright
274.1Bright
284.1Bright
294.0Bright
304.0Bright
Planning a trip in September

Hazard calendar for Yŏnsa-ŭp

In seasonPeak

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

Yŏnsa-ŭp's rainy season runs May–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 Yŏnsa-ŭp?

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

6.3
Sightseeing
1st-best month of the year
2.6
Beach & pool
4th-best month of the year

September is a reasonable time to visit Yŏnsa-ŭp for sightseeing.

What to pack for Yŏnsa-ŭp in September

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

In September, Yŏnsa-ŭp sees daytime highs around 19°C and nights near 8°C. Worth packing: a warm layer. About 8 days see rain.

a warm layer

UV index in Yŏnsa-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 Yŏnsa-ŭp peaks around August 19 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 19UV 8Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr6High
May7Very high
Jun7Very high
Jul5High
Aug8Very high
Sep7High
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Yŏnsa-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 Yŏnsa-ŭp is worst in March — around 39 µg/m³ PM2.5 (poor), about 2.7× the cleanest month (August, 14 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 2238 µg/m³Aug 1615 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb29Moderate
Mar39Poor
Apr37Poor
May34Moderate
Jun21Moderate
Jul17Moderate
Aug14Moderate
Sep17Moderate
Oct30Moderate
Nov23Moderate
Dec23Moderate
Location & terrain

Where is Yŏnsa-ŭp?

Yŏnsa-ŭp sits at 41.9°N, 129.0°E, 707 m above sea level, in North Korea. The nearest listed city is Musan-ŭp, 39 km away.

Musan-ŭpSamjiyŏn-ŭpPuryŏng-ŭpRanamKyŏngsŏngChongjinŎrangHwasŏng

Topography around Yŏnsa-ŭp

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

Within 3 km, the terrain around Yŏnsa-ŭp has significant variations in elevation — a maximum elevation change of 575 m around an average of 868 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,335 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,713 m.

The land around Yŏnsa-ŭp is covered by trees (42%), cropland (26%) and grassland (24%) within 3 km, trees (77%) within 16 km, and trees (82%) within 80 km.

3 km
575 m
16 km
1,335 m
80 km
2,713 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Musan-ŭp 39 km · Samjiyŏn-ŭp 58 km · Puryŏng-ŭp 60 km · Ranam 60 km · Kyŏngsŏng 61 km · Chongjin 65 km · Ŏrang 74 km · Hwasŏng 83 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 Yŏnsa-ŭp (41.9081°, 129.0111°, elevation 707 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).