Hŭngnam weather in September

In September, Hŭngnam sees average daytime highs of 21°C and overnight lows near 19°C, with 115 mm of rain across 7.8 wet days and about 12.3 hours of daylight. It is the 3rd-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 43% 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 Hŭngnam's 8th-clearest and 12th-windiest month. For the whole year in context, see Hŭngnam's year-round climate.

Daytime high
21°
3rd warmest
Overnight low
19°
10th coldest
Rainfall
115 mm
7.8 wet days
Daylight
12 h 18 min
6:16 AM – 6:32 PM
Cloud cover
51%
8th clearest
Wind
12 km/h
12th windiest
Solar energy
4.3 kWh/m²
Travel score
7.0
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 Hŭngnam reaches about 21°C in the afternoon and slips back to 19°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 24°C. Set against its neighbours, September runs about 3°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12321
22321
32321
42320
52320
62320
72320
82220
92220
102220
112219
122219
132219
142219
152219
162119
172119
182118
192118
202118
212118
222118
232018
242017
252017
262017
272017
282017
292016
301916

How September really feels in Hŭngnam

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.

Hŭngnam weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°3265.59.50.0
Feb / -2°254.84.110.40.0
Mar / 3052.511.70.4
Apr10° / 516.10.4132.7
May15° / 12°837.1014.25.1
Jun19° / 17°837.1014.86.5
Jul23° / 21°19012.4014.56.4
Aug25° / 22°19912.1013.66.5
Sep21° / 19°1157.8012.37.0
Oct17° / 13°596.7010.95.9
Nov10° / 668.10.89.82.4
Dec / -1°3563.39.20.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% 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 (%)
15149
25149
35248
45248
55149
65248
75248
85248
95149
105149
115149
125248
135248
145347
155446
165446
175446
185644
195644
205743
215842
225842
235941
245941
256040
266040
276139
286139
296238
306337

Chance of precipitation in September

Any precipitation

Hŭngnam gets around 115 mm of rain 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 rain 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 (%)
134
233
332
431
530
629
729
828
928
1027
1127
1226
1326
1426
1526
1626
1726
1825
1925
2025
2125
2225
2324
2424
2524
2624
2724
2823
2923
3023

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 20% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1212343913
2213363712
3214373611
4316383410
531739339
631839318
742040307
852140286
962340275
1072540254
1182639233
1292839222
13103038202
14123237182
15133436161
16143535151
17163734131
18173832120
19194031100
2020413090
2122422980
2224432760
2325432650
2427442440
2530442340
2632442130
2734442020
2837431820
2939421720
3042421510

Wind in September

Winds average 12 km/h in September, the calmest month.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2313light breeze
2413light breeze
2513light 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 6:02 AM to 6:30 AM, and sunset from 6:57 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:026:57
212.96:036:55
312.86:046:54
412.86:046:52
512.76:056:50
612.76:066:49
712.76:076:47
812.66:086:45
912.66:096:43
1012.56:106:42
1112.56:116:40
1212.46:126:38
1312.46:136:37
1412.36:146:35
1512.36:156:33
1612.36:166:32
1712.26:176:30
1812.26:186:28
1912.16:196:26
2012.16:206:25
2112.06:216:23
2212.06:226:21
2311.96:236:20
2411.96:246:18
2511.96:256:16
2611.86:266:14
2711.86:276:13
2811.76:286:11
2911.76:296:09
3011.66:306:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.3 kWh/m².

For context, solar energy here swings from a low near 2.16 kWh/m² to a high of 5.91 kWh/m² in May across the year — September's 4.3 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
94.4Bright
104.4Bright
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
254.2Bright
264.1Bright
274.1Bright
284.1Bright
294.1Bright
304.0Bright
Planning a trip in September

Hazard calendar for Hŭngnam

In seasonPeak

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

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

Hŭngnam'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 Hŭngnam?

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

7.0
Sightseeing
1st-best month of the year
4.4
Beach & pool
3rd-best month of the year

September is one of the better times to visit Hŭngnam for general sightseeing.

What to pack for Hŭngnam in September

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

In September, Hŭngnam sees daytime highs around 21°C and nights near 19°C. Little to plan around — just the basics. About 8 days see rain.

Sea temperature near Hŭngnam in September

The nearest coast averages about 22°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 21 km away) is warmest in August at about 24°C and coldest in February near 4°C.

It's comfortable for a long swim from Jul 5 to Sep 28 — about 2.8 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan5Bracing
Feb4Bracing
Mar5Bracing
Apr8Bracing
May12Bracing
Jun18Cool
Jul22Refreshing
Aug24Refreshing
Sep22Refreshing
Oct18Cool
Nov13Bracing
Dec8Bracing

UV index in Hŭngnam 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 Hŭngnam peaks around August 20 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 21 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 highHighVery highModerateLowAug 20UV 8Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr5High
May7Very high
Jun7High
Jul6High
Aug8Very high
Sep7Very high
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Hŭngnam 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 Hŭngnam is worst in March — around 96 µg/m³ PM2.5 (unhealthy), about 2.3× the cleanest month (July, 43 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyMar 996 µg/m³Jul 1943 µg/m³
PM2.5 (µg/m³)Level
Jan95Unhealthy
Feb96Unhealthy
Mar96Unhealthy
Apr80Unhealthy
May64Unhealthy
Jun51Poor
Jul43Poor
Aug46Poor
Sep62Unhealthy
Oct83Unhealthy
Nov87Unhealthy
Dec84Unhealthy
Location & terrain

Where is Hŭngnam?

Hŭngnam sits at 39.8°N, 127.6°E, 3 m above sea level, in North Korea. The nearest listed city is Hamhŭng, 12 km away.

HongwŏnYuktae-dongSinp’oKowŏn-ŭpWŏnsan

Topography around Hŭngnam

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

Within 3 km, the terrain around Hŭngnam has only modest variations in elevation — a maximum elevation change of 232 m around an average of 35 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 595 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,187 m.

The land around Hŭngnam is covered by artificial surfaces (29%), cropland (23%) and trees (20%) within 3 km, water (41%) and cropland (27%) within 16 km, and trees (53%) and water (29%) within 80 km.

3 km
232 m
16 km
595 m
80 km
2,187 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Hamhŭng 12 km · Samho-rodongjagu 24 km · Yŏnggwang-ŭp 25 km · Hongwŏn 34 km · Yuktae-dong 49 km · Sinp’o 53 km · Kowŏn-ŭp 56 km · Wŏnsan 78 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 Hŭngnam (39.842°, 127.6321°, elevation 3 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).