Uiju weather in September

In September, Uiju sees average daytime highs of 24°C and overnight lows near 14°C, with 85 mm of rain across 6.8 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 26°C in the first days to 22°C by the end. The sky is clear or mostly clear about 44% of the time in September, and the air most often feels dry.

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 Uiju's 7th-clearest and 11th-windiest month. For the whole year in context, see Uiju's year-round climate.

Daytime high
24°
4th warmest
Overnight low
14°
9th coldest
Rainfall
85 mm
6.8 wet days
Daylight
12 h 18 min
6:28 AM – 6:44 PM
Cloud cover
49%
7th clearest
Wind
8 km/h
11th windiest
Solar energy
4.44 kWh/m²
Travel score
7.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 26°C in the first days to 22°C by the end.

A typical September day in Uiju reaches about 24°C in the afternoon and slips back to 14°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 27°C. Set against its neighbours, September runs about 4°C cooler than August and about 7°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12718
22717
32617
42617
52617
62616
72616
82616
92516
102516
112515
122515
132515
142515
152514
162414
172414
182413
192413
202413
212313
222312
232312
242312
252312
262211
272211
282211
292211
302110

How September really feels in Uiju

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.

Uiju 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-2° / -12°102.52.49.50.0
Feb / -9°193.32.710.40.0
Mar / -2°274.51.711.71.5
Apr15° / 5670.5135.1
May21° / 11°888.7014.26.8
Jun25° / 16°11210.5014.86.6
Jul28° / 21°22014.6014.65.4
Aug28° / 20°22613.9013.65.4
Sep24° / 14°856.8012.37.4
Oct17° / 566.8010.96.0
Nov / -1°466.51.59.81.4
Dec-0° / -9°193.82.89.20.0

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 14% of September, with mostly cloudy or overcast conditions the remaining 42%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
25149
35149
45248
55347
65347
75446
85446
95545
105545
115644
125644
135743
145743
155842
165941
176040
186139
196139
206139
216238
226238
236337
246337
256436
266436
276436
286436
296436
306436

Chance of precipitation in September

Any precipitation

Uiju gets around 85 mm of rain over 6.8 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 24% and peaks near 33% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
133
232
332
431
530
629
728
827
926
1025
1125
1224
1323
1423
1522
1622
1721
1821
1920
2020
2120
2220
2320
2420
2520
2620
2720
2820
2921
3021

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 38% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
110133232121
212143230110
313153328100
41416342790
51617342580
61818342370
71918342260
82119342150
92320332040
102521331830
112821311720
123022301620
133323291410
143524271310
153725251210
164026231110
174227211000
18442819900
19462818800
20482916700
21503015600
22523013500
23543012400
24573010300
2559309200
2661298200
2764287100
2865277100
2967266100
3069255100

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 6:14 AM to 6:42 AM, and sunset from 7:10 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:147:10
212.96:157:08
312.86:167:06
412.86:177:05
512.86:187:03
612.76:197:01
712.76:207:00
812.66:206:58
912.66:216:56
1012.56:226:54
1112.56:236:53
1212.46:246:51
1312.46:256:49
1412.46:266:47
1512.36:276:46
1612.36:286:44
1712.26:296:42
1812.26:306:41
1912.16:316:39
2012.16:326:37
2112.06:336:35
2212.06:346:34
2311.96:356:32
2411.96:366:30
2511.96:376:28
2611.86:386:27
2711.86:396:25
2811.76:406:23
2911.76:416:22
3011.66:426:20

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.44 kWh/m².

For context, solar energy here swings from a low near 2.16 kWh/m² to a high of 5.71 kWh/m² in May across the year — September's 4.44 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
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
224.3Bright
234.3Bright
244.3Bright
254.2Bright
264.2Bright
274.2Bright
284.1Bright
294.1Bright
304.1Bright
Planning a trip in September

Hazard calendar for Uiju

In seasonPeak

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

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

Uiju's rainy season runs June–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 Uiju?

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

7.4
Sightseeing
1st-best month of the year
6.1
Beach & pool
2nd-best month of the year

September is one of the better times to visit Uiju for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Uiju in September

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

In September, Uiju sees daytime highs around 24°C and nights near 14°C. Worth packing: light clothes. About 7 days see rain.

light clothes

Sea temperature near Uiju in September

The nearest coast averages about 23°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 38 km away) is warmest in August at about 24°C and coldest in February near 1°C.

It's comfortable for a long swim from Jul 2 to Oct 1 — about 3 months when the water holds above 20°C.

0°10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan2Bracing
Feb1Bracing
Mar2Bracing
Apr7Bracing
May13Bracing
Jun18Cool
Jul22Refreshing
Aug24Warm
Sep23Refreshing
Oct18Cool
Nov12Bracing
Dec6Bracing

UV index in Uiju 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 Uiju peaks around August 21 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowAug 21UV 7Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar3Moderate
Apr6High
May6High
Jun6High
Jul7High
Aug7High
Sep7High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Uiju 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 Uiju is worst in January — around 65 µg/m³ PM2.5 (unhealthy), about 1.9× the cleanest month (August, 34 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorPoorUnhealthyJan 2065 µg/m³Aug 1235 µg/m³
PM2.5 (µg/m³)Level
Jan65Unhealthy
Feb63Unhealthy
Mar63Unhealthy
Apr55Unhealthy
May45Poor
Jun41Poor
Jul36Poor
Aug34Moderate
Sep41Poor
Oct50Poor
Nov54Poor
Dec59Unhealthy
Location & terrain

Where is Uiju?

Uiju sits at 40.2°N, 124.5°E, 26 m above sea level, in North Korea. The nearest listed city is Sinŭiju, 16 km away.

Sakchu-ŭpKusŏng-siChŏngjuSil-liSinanjuSongwŏnAnju

Topography around Uiju

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

Within 3 km, the terrain around Uiju has only modest variations in elevation — a maximum elevation change of 120 m around an average of 22 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 504 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,427 m.

The land around Uiju is covered by cropland (72%) within 3 km, trees (40%) and cropland (37%) within 16 km, and trees (54%) and cropland (24%) within 80 km.

3 km
120 m
16 km
504 m
80 km
1,427 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Sinŭiju 16 km · Sakchu-ŭp 49 km · Kusŏng-si 66 km · Chŏngju 81 km · Sil-li 112 km · Sinanju 114 km · Songwŏn 116 km · Anju 116 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 Uiju (40.1994°, 124.5317°, elevation 26 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).