Hyesan-dong weather in September

In September, Hyesan-dong sees average daytime highs of 18°C and overnight lows near 7°C, with 71 mm of precipitation across 7.9 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 20°C in the first days to 16°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 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 Hyesan-dong's 6th-clearest and 10th-windiest month. For the whole year in context, see Hyesan-dong's year-round climate.

Daytime high
18°
4th warmest
Overnight low
9th coldest
Precipitation
71 mm
7.9 wet days
Daylight
12 h 18 min
6:13 AM – 6:30 PM
Cloud cover
55%
6th clearest
Wind
6 km/h
10th windiest
Solar energy
4.45 kWh/m²
Travel score
6.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 20°C in the first days to 16°C by the end.

A typical September day in Hyesan-dong reaches about 18°C in the afternoon and slips back to 7°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 22°C. Set against its neighbours, September runs about 5°C cooler than August and about 8°C warmer than October.

10°20°151015202530
Avg high (°C)Avg low (°C)
12110
22110
32010
42010
5209
6209
7209
8209
9198
10198
11198
12198
13197
14197
15187
16186
17186
18186
19186
20175
21175
22175
23175
24174
25164
26164
27164
28163
29163
30153

How September really feels in Hyesan-dong

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.

Hyesan-dong 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-10° / -22°113.259.40.0
Feb-6° / -19°184.66.110.30.0
Mar / -11°337.98.511.70.0
Apr10° / -2°5610.57.113.12.0
May16° / 9514.9214.34.5
Jun20° / 10°9715.5014.95.4
Jul23° / 14°16417.3014.75.6
Aug23° / 14°13614.2013.76.0
Sep18° / 717.90.112.36.1
Oct11° / -1°437.6310.92.9
Nov / -10°387.77.49.70.0
Dec-8° / -20°185.279.10.0

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 17% of September, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14555
24654
34654
44753
54852
64753
74852
84951
94852
104951
115050
125050
135149
145248
155248
165347
175446
185446
195446
205545
215545
225545
235644
245644
255644
265743
275743
285743
295743
305842

Chance of precipitation in September

Any precipitationSnow

Hyesan-dong gets around 71 mm of rain and snow over 7.9 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 35% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
1350
2350
3340
4340
5330
6320
7310
8300
9300
10290
11290
12280
13280
14280
15270
16270
17260
18260
19250
20250
21240
22241
23231
24231
25221
26222
27222
28222
29212
30213

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 91% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1692281
2722170
3751960
4771760
5791650
6821440
7831340
8851230
9881020
1089920
1191810
1292710
1393610
1494510
1595500
1696400
1797300
1897300
1997300
2098200
2198200
2298200
2399100
2499100
2599100
2699100
2799100
28100000
29100000
30100000

Wind in September

Winds average 6 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
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
297calm
307calm

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 5:58 AM to 6:28 AM, and sunset from 6:56 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:586:56
212.95:596:54
312.96:006:53
412.86:016:51
512.86:026:49
612.76:036:47
712.76:046:46
812.66:056:44
912.66:066:42
1012.66:076:40
1112.56:086:39
1212.56:096:37
1312.46:106:35
1412.46:116:33
1512.36:126:32
1612.36:136:30
1712.26:146:28
1812.26:156:26
1912.16:176:24
2012.16:186:23
2112.06:196:21
2212.06:206:19
2311.96:216:17
2411.96:226:15
2511.86:236:14
2611.86:246:12
2711.86:256:10
2811.76:266:08
2911.76:276:07
3011.66:286:05

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.45 kWh/m².

For context, solar energy here swings from a low near 2.21 kWh/m² to a high of 5.68 kWh/m² in May across the year — September's 4.45 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
Planning a trip in September

Hazard calendar for Hyesan-dong

In seasonPeak

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

Hyesan-dong's rainy season runs May–August, 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 Hyesan-dong?

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

6.1
Sightseeing
1st-best month of the year
2.2
Beach & pool
4th-best month of the year

September is a reasonable time to visit Hyesan-dong for sightseeing.

What to pack for Hyesan-dong in September

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

In September, Hyesan-dong sees daytime highs around 18°C and nights near 7°C. Worth packing: a warm layer. About 8 days see rain.

a warm layer

UV index in Hyesan-dong 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 Hyesan-dong peaks around August 18 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 highVery highModerateLowAug 18UV 8Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun7Very high
Jul7High
Aug9Very high
Sep7Very high
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Hyesan-dong 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 Hyesan-dong is worst in March — around 36 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (August, 15 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateMar 2136 µg/m³Aug 1615 µg/m³
PM2.5 (µg/m³)Level
Jan28Moderate
Feb29Moderate
Mar36Poor
Apr34Moderate
May29Moderate
Jun22Moderate
Jul18Moderate
Aug15Moderate
Sep18Moderate
Oct26Moderate
Nov23Moderate
Dec25Moderate
Location & terrain

Where is Hyesan-dong?

Hyesan-dong sits at 41.4°N, 128.2°E, 754 m above sea level, in North Korea. The nearest listed city is Hyesan, 1.0 km away.

Kapsan-ŭpSamjiyŏn-ŭpYŏnsa-ŭpChangam-ch’onKiljuMyŏngch’ŏnHwasŏng

Topography around Hyesan-dong

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

Within 3 km, the terrain around Hyesan-dong has significant variations in elevation — a maximum elevation change of 333 m around an average of 803 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 991 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,299 m.

The land around Hyesan-dong is covered by cropland (42%) and artificial surfaces (27%) within 3 km, trees (46%) and grassland (30%) within 16 km, and trees (85%) within 80 km.

3 km
333 m
16 km
991 m
80 km
2,299 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Hyesan 1.0 km · Kapsan-ŭp 35 km · Samjiyŏn-ŭp 47 km · Yŏnsa-ŭp 89 km · Changam-ch’on 101 km · Kilju 107 km · Myŏngch’ŏn 110 km · Hwasŏng 110 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 Hyesan-dong (41.3953°, 128.1873°, elevation 754 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).