Hwasŏng weather in September

In September, Hwasŏng sees average daytime highs of 21°C and overnight lows near 12°C, with 109 mm of rain across 8.9 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 19°C by the end. The sky is clear or mostly clear about 39% 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 Hwasŏng's 7th-clearest and 7th-windiest month. For the whole year in context, see Hwasŏng's year-round climate.

Daytime high
21°
4th warmest
Overnight low
12°
9th coldest
Rainfall
109 mm
8.9 wet days
Daylight
12 h 18 min
6:08 AM – 6:24 PM
Cloud cover
54%
7th clearest
Wind
6 km/h
7th windiest
Solar energy
4.27 kWh/m²
Travel score
6.6
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 19°C by the end.

A typical September day in Hwasŏng reaches about 21°C in the afternoon and slips back to 12°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 24°C. Set against its neighbours, September runs about 4°C cooler than August and about 6°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12316
22315
32315
42315
52315
62315
72214
82214
92214
102214
112213
122213
132113
142113
152113
162112
172112
182112
192012
202011
212011
222011
232011
242010
251910
261910
271910
281910
29199
30199

How September really feels in Hwasŏng

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.

Hwasŏng 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-4° / -14°266.78.59.40.0
Feb-2° / -13°245.46.310.30.0
Mar / -6°316.45.811.70.4
Apr12° / 477.93.513.13.6
May18° / 7311.30.514.35.7
Jun22° / 13°7712.5014.96.0
Jul25° / 17°14315.4014.75.8
Aug25° / 18°17416.7013.75.7
Sep21° / 12°1098.9012.36.6
Oct15° / 557.10.810.95.1
Nov / -3°518.15.29.70.9
Dec-2° / -10°408.89.89.10.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% 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 47%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14159
24258
34357
44456
54555
64654
74753
84753
94852
104951
115050
125149
135248
145347
155347
165446
175545
185644
195644
205743
215842
225941
235941
246040
256139
266238
276238
286337
296436
306436

Chance of precipitation in September

Any precipitation

Hwasŏng gets around 109 mm of rain over 8.9 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 31% and peaks near 43% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
143
241
340
438
537
636
734
833
932
1031
1131
1230
1330
1430
1529
1629
1729
1828
1928
2028
2127
2227
2327
2427
2527
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 52% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1133039172
2143137152
3163335141
4183434131
5203532121
6233730101
725372891
828382681
931382470
1034382260
1137382050
1240371940
1344361730
1447351620
1551331420
1654321310
1758301110
1860291010
196427900
206726700
217024600
227322500
237620400
247918300
258017300
268315200
278513200
288712100
298910100
30909100

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 6 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
296calm
306calm

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 5:53 AM to 6:23 AM, and sunset from 6:51 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:536:51
212.95:546:49
312.95:556:47
412.85:566:46
512.85:576:44
612.75:586:42
712.75:596:40
812.66:006:39
912.66:016:37
1012.66:026:35
1112.56:036:33
1212.56:046:32
1312.46:056:30
1412.46:066:28
1512.36:076:26
1612.36:086:24
1712.26:096:23
1812.26:106:21
1912.16:116:19
2012.16:126:17
2112.06:136:16
2212.06:146:14
2311.96:166:12
2411.96:176:10
2511.86:186:08
2611.86:196:07
2711.86:206:05
2811.76:216:03
2911.76:226:01
3011.66:236:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.27 kWh/m².

For context, solar energy here swings from a low near 2 kWh/m² to a high of 5.61 kWh/m² in May across the year — September's 4.27 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.2Bright
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 Hwasŏng

In seasonPeak

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

Hwasŏng sits in the Pacific typhoon belt; the season peaks July–October.

Hwasŏng'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 Hwasŏng?

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

6.6
Sightseeing
1st-best month of the year
3.9
Beach & pool
4th-best month of the year

September is a reasonable time to visit Hwasŏng for sightseeing.

What to pack for Hwasŏng in September

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

In September, Hwasŏng sees daytime highs around 21°C and nights near 12°C. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near Hwasŏng in September

The nearest coast averages about 20°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 35 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 27 to Sep 12 — about 1.6 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan5Bracing
Feb4Bracing
Mar4Bracing
Apr6Bracing
May9Bracing
Jun14Bracing
Jul19Cool
Aug22Refreshing
Sep20Cool
Oct16Cool
Nov12Bracing
Dec8Bracing

UV index in Hwasŏng 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 Hwasŏng peaks around August 18 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighHighVery highHighModerateLowAug 18UV 8Dec 19UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr5High
May7Very high
Jun7High
Jul6High
Aug8Very high
Sep7High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Hwasŏng 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 Hwasŏng is worst in April — around 42 µg/m³ PM2.5 (poor), about 3.5× the cleanest month (August, 12 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateModerateApr 1241 µg/m³Aug 2112 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb28Moderate
Mar38Poor
Apr42Poor
May28Moderate
Jun17Moderate
Jul14Moderate
Aug12Good
Sep12Moderate
Oct17Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is Hwasŏng?

Hwasŏng sits at 41.3°N, 129.5°E, 98 m above sea level, in North Korea. The nearest listed city is Myŏnggan-dong, 13 km away.

KiljuKyŏngsŏngHwadaeRanamChongjin

Topography around Hwasŏng

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

Within 3 km, the terrain around Hwasŏng has significant variations in elevation — a maximum elevation change of 337 m around an average of 147 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,245 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,500 m.

The land around Hwasŏng is covered by cropland (73%) within 3 km, trees (53%) and cropland (30%) within 16 km, and trees (56%) and water (30%) within 80 km.

3 km
337 m
16 km
1,245 m
80 km
2,500 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Myŏnggan-dong 13 km · Myŏngch’ŏn 21 km · Ŏrang 25 km · Kilju 35 km · Kyŏngsŏng 38 km · Hwadae 46 km · Ranam 53 km · Chongjin 65 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 Hwasŏng (41.2556°, 129.4928°, elevation 98 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).