Bắc Ninh weather in September

In September, Bắc Ninh sees average daytime highs of 32°C and overnight lows near 25°C, with 233 mm of rain across 18.6 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 21% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Bắc Ninh's 4th-clearest and 11th-windiest month. For the whole year in context, see Bắc Ninh's year-round climate.

Daytime high
32°
5th warmest
Overnight low
25°
8th coldest
Rainfall
233 mm
18.6 wet days
Daylight
12 h 06 min
5:46 AM – 5:54 PM
Cloud cover
70%
4th clearest
Wind
7 km/h
11th windiest
Solar energy
4.37 kWh/m²
Travel score
3.2
out of 10

Bắc Ninh is provincial city of Vietnam.

Density
3,483/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical September day in Bắc Ninh reaches about 32°C in the afternoon and slips back to 25°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 34°C. Set against its neighbours, September runs about 1°C cooler than August and about 2°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13226
23226
33226
43226
53226
63226
73226
83226
93226
103225
113225
123225
133225
143225
153225
163225
173225
183225
193225
203225
213225
223225
233125
243125
253124
263124
273124
283124
293124
303124

How September really feels in Bắc Ninh

Once humidity and wind are folded in, September averages 30 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
30
12 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Bắc Ninh weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 14°388.110.96.2
Feb22° / 16°257.111.36.5
Mar24° / 19°5210.511.96.4
Apr29° / 22°9211.712.55.1
May32° / 25°25118.4133.2
Jun33° / 27°28320.313.32.3
Jul33° / 27°30922.613.22.2
Aug33° / 26°36124.412.72.4
Sep32° / 25°23318.612.13.2
Oct30° / 22°11011.111.55.2
Nov26° / 19°577117.1
Dec22° / 15°326.410.77.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% 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 65%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12476
22476
32674
42674
52674
62674
72674
82773
92872
102872
113070
123070
133268
143268
153466
163466
173664
183664
193862
203961
214060
224159
234357
244456
254456
264654
274654
284753
294753
304951

Chance of precipitation in September

Any precipitation

Bắc Ninh gets around 233 mm of rain over 18.6 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 62% and peaks near 77% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
177
277
376
476
576
675
774
873
971
1070
1169
1267
1366
1465
1563
1661
1760
1858
1957
2055
2154
2253
2352
2451
2550
2649
2748
2847
2946
3045

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the miserable band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1000793
2001792
3001891
4001990
5011989
60111088
70121186
80121285
90131383
100131482
110131581
120141679
130151777
140161974
150262072
160272170
170282268
180292465
1902102563
2002112661
2102122759
2202132956
2302143054
2402153152
2503153250
2603163347
2704173445
2805173543
2915183541
3016183639

Wind in September

Winds average 7 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
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 24 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over September. Sunrise moves from 5:43 AM to 5:50 AM, and sunset from 6:08 PM to 5:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:436:08
212.45:436:07
312.45:436:06
412.45:436:05
512.35:446:04
612.35:446:03
712.35:446:02
812.35:446:02
912.35:456:01
1012.25:456:00
1112.25:455:59
1212.25:455:58
1312.25:465:57
1412.25:465:56
1512.15:465:55
1612.15:465:54
1712.15:475:53
1812.15:475:52
1912.15:475:51
2012.05:475:50
2112.05:485:49
2212.05:485:48
2312.05:485:47
2412.05:485:46
2511.95:495:45
2611.95:495:44
2711.95:495:43
2811.95:505:42
2911.85:505:41
3011.85:505:40

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.37 kWh/m².

For context, solar energy here swings from a low near 2.15 kWh/m² to a high of 4.82 kWh/m² in June across the year — September's 4.37 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Hazard calendar for Bắc Ninh

In seasonPeak

In September, Bắc Ninh sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Bắc Ninh's monsoon runs May–September, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Bắc Ninh?

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

3.2
Sightseeing
8th-best month of the year
5.1
Beach & pool
6th-best month of the year

September is a weaker month for outdoor sightseeing in Bắc Ninh.

What to pack for Bắc Ninh in September

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

In September, Bắc Ninh sees daytime highs around 32°C and nights near 25°C. Pack light clothes and rain gear. About 19 days see rain.

light clothesrain gear

UV index in Bắc Ninh in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bắc Ninh peaks around June 20 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 6 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highVery highExtremeVery highHighJun 20UV 11Nov 23UV 6
UV index (midday)Level
Jan6High
Feb7Very high
Mar9Very high
Apr6High
May8Very high
Jun11Extreme
Jul10Extreme
Aug9Very high
Sep8Very high
Oct8Very high
Nov6High
Dec6High

Air quality in Bắc Ninh 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 Bắc Ninh is worst in December — around 171 µg/m³ PM2.5 (very unhealthy), about 3.4× the cleanest month (July, 50 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecVery unhealthyUnhealthyPoorUnhealthyVery unhealthyDec 19170 µg/m³Jul 1452 µg/m³
PM2.5 (µg/m³)Level
Jan161Very unhealthy
Feb136Unhealthy
Mar122Unhealthy
Apr106Unhealthy
May76Unhealthy
Jun59Unhealthy
Jul50Poor
Aug68Unhealthy
Sep96Unhealthy
Oct125Unhealthy
Nov152Very unhealthy
Dec171Very unhealthy
Location & terrain

Where is Bắc Ninh?

Bắc Ninh sits at 21.2°N, 106.1°E, 9 m above sea level, in Vietnam. The nearest listed city is Cung Kiệm, 9.0 km away.

Topography around Bắc Ninh

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

Within 3 km, the terrain around Bắc Ninh has only modest variations in elevation — a maximum elevation change of 49 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 236 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,720 m.

The land around Bắc Ninh is covered by artificial surfaces (45%) and cropland (26%) within 3 km, cropland (52%) and artificial surfaces (22%) within 16 km, and trees (54%) and cropland (31%) within 80 km.

3 km
49 m
16 km
236 m
80 km
1,720 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Cung Kiệm 9.0 km · Việt Yên 11 km · Từ Sơn 15 km · Thuận Thanh 16 km · Bắc Giang 16 km · Cổ Lóa 23 km · Gia Lâm 23 km · Trâu Quỳ 24 km

Vietnam travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C / F
220 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,066
2025
Happiness
6.4 / 10
World Happiness, 2025
Safe drinking water
59%
of population, 2024
Homicide rate
1.5
per 100k, 2011
Road deaths
30.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 500
Religion
none 86%Catholic 6%Buddhist 6%Protestant 1%

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 Bắc Ninh (21.1861°, 106.0763°, elevation 9 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).