Ninh Binh weather in September

In September, Ninh Binh sees average daytime highs of 31°C and overnight lows near 25°C, with 289 mm of rain across 21.1 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 18% 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 Ninh Binh's 5th-clearest and 11th-windiest month. For the whole year in context, see Ninh Binh's year-round climate.

Daytime high
31°
5th warmest
Overnight low
25°
8th coldest
Rainfall
289 mm
21.1 wet days
Daylight
12 h 06 min
5:47 AM – 5:54 PM
Cloud cover
74%
5th clearest
Wind
8 km/h
11th windiest
Solar energy
4.37 kWh/m²
Travel score
3.3
out of 10

Ninh Binh is dissolved municipality of Ninh Bình province, Vietnam.

Density
762/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 31°C through the month.

A typical September day in Ninh Binh reaches about 31°C in the afternoon and slips back to 25°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°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)
13126
23126
33126
43126
53126
63126
73126
83126
93126
103126
113125
123125
133125
143125
153125
163125
173125
183125
193125
203125
213125
223125
233025
243025
253025
263024
273024
283024
293024
303024

How September really feels in Ninh Binh

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
4 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.

Ninh Binh weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 15°306.210.96.5
Feb21° / 16°184.511.36.9
Mar24° / 19°366.811.97.0
Apr28° / 22°678.612.46.0
May31° / 25°18515.912.93.6
Jun33° / 27°18215.313.22.7
Jul33° / 27°24618.413.12.7
Aug32° / 27°33423.612.72.6
Sep31° / 25°28921.112.13.3
Oct29° / 23°15414.211.55.2
Nov26° / 20°628.6116.9
Dec22° / 16°285.510.87.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 69%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11981
21981
31981
41981
51981
62080
72179
82179
92278
102377
112575
122674
132773
142971
152971
163268
173367
183466
193664
203763
213961
224060
234060
244258
254258
264357
274456
284555
294555
304555

Chance of precipitation in September

Any precipitation

Ninh Binh gets around 289 mm of rain over 21.1 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 71% and peaks near 84% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
184
284
384
484
584
683
782
881
980
1079
1178
1276
1375
1473
1571
1670
1768
1866
1965
2063
2162
2261
2360
2459
2558
2658
2757
2857
2957
3056

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 75% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100496
200595
300694
400694
511791
611890
711890
811989
9121087
10121186
11121285
12131383
13131482
14141679
15141778
16151876
17152074
18162172
19162370
20172468
21182566
22182764
23192862
241102960
252103058
262113156
272123254
282133253
293133351
303143349

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 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
17calm
27calm
37calm
47calm
57calm
67calm
77calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 5:44 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)
112.45:446:08
212.45:446:07
312.45:446:06
412.35:446:05
512.35:456:04
612.35:456:03
712.35:456:02
812.35:456:01
912.35:456:01
1012.25:466:00
1112.25:465:59
1212.25:465:58
1312.25:465:57
1412.25:475:56
1512.15:475:55
1612.15:475:54
1712.15:475:53
1812.15:475:52
1912.15:485:51
2012.05:485:50
2112.05:485:49
2212.05:485:48
2312.05:495:47
2412.05:495:46
2511.95:495:45
2611.95:495:44
2711.95:505:43
2811.95:505:42
2911.95:505:41
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 2.43 kWh/m² to a high of 5.33 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
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
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 Ninh Binh

In seasonPeak

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

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

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

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

Is September a good time to visit Ninh Binh?

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

3.3
Sightseeing
9th-best month of the year
4.8
Beach & pool
8th-best month of the year

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

What to pack for Ninh Binh in September

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

In September, Ninh Binh sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. About 21 days see rain.

light clothesrain gear

Sea temperature near Ninh Binh in September

The nearest coast averages about 29°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 44 km away) is warmest in August at about 30°C and coldest in February near 20°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb20Refreshing
Mar21Refreshing
Apr24Refreshing
May27Warm
Jun29Tropical
Jul30Tropical
Aug30Tropical
Sep29Tropical
Oct28Tropical
Nov26Warm
Dec23Refreshing

UV index in Ninh Binh in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ninh Binh peaks around July 12 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highVery highExtremeVery highHighJul 12UV 11Dec 16UV 6
UV index (midday)Level
Jan7High
Feb8Very high
Mar9Very high
Apr7High
May9Very high
Jun11Extreme
Jul11Extreme
Aug10Very high
Sep8Very high
Oct8Very high
Nov7High
Dec6High

Air quality in Ninh Binh 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 Ninh Binh is worst in December — around 134 µg/m³ PM2.5 (unhealthy), about 3.8× the cleanest month (July, 35 µg/m³).

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyDec 20132 µg/m³Jul 1536 µg/m³
PM2.5 (µg/m³)Level
Jan126Unhealthy
Feb106Unhealthy
Mar94Unhealthy
Apr87Unhealthy
May60Unhealthy
Jun42Poor
Jul35Moderate
Aug46Poor
Sep69Unhealthy
Oct93Unhealthy
Nov116Unhealthy
Dec134Unhealthy
Location & terrain

Where is Ninh Binh?

Ninh Binh sits at 20.3°N, 106.0°E, 7 m above sea level, in Vietnam. The nearest listed city is Bỉm Sơn, 24 km away.

Topography around Ninh Binh

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

Within 3 km, the terrain around Ninh Binh has only modest variations in elevation — a maximum elevation change of 65 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 241 m; within 80 km, large variations in elevation — a maximum elevation change of 1,184 m.

The land around Ninh Binh is covered by artificial surfaces (43%) and cropland (22%) within 3 km, cropland (54%) and trees (22%) within 16 km, and cropland (35%), trees (32%) and water (24%) within 80 km.

3 km
65 m
16 km
241 m
80 km
1,184 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Bỉm Sơn 24 km · Nga Sơn 28 km · Nam Định 28 km · Phủ Lý 33 km · Thái Bình 43 km · Hưng Yên 44 km · Lương Bằng 54 km · Thanh Hóa 56 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 Ninh Binh (20.2581°, 105.9797°, elevation 7 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).