Bắc Quang weather in September

In September, Bắc Quang sees average daytime highs of 30°C and overnight lows near 23°C, with 226 mm of rain across 21 wet days and about 12.1 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 30°C in the first days to 29°C by the end. The sky is clear or mostly clear about 21% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 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 Quang's 4th-clearest and 10th-windiest month. For the whole year in context, see Bắc Quang's year-round climate.

Daytime high
30°
4th warmest
Overnight low
23°
9th coldest
Rainfall
226 mm
21 wet days
Daylight
12 h 06 min
5:51 AM – 5:59 PM
Cloud cover
69%
4th clearest
Wind
3 km/h
10th windiest
Solar energy
4.18 kWh/m²
Travel score
3.8
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 30°C in the first days to 29°C by the end.

A typical September day in Bắc Quang reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 32°C. Set against its neighbours, September runs about 1°C cooler than August and about 3°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13024
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
172923
182923
192923
202922
212922
222922
232922
242922
252922
262922
272922
282922
292922
302822

How September really feels in Bắc Quang

Once humidity and wind are folded in, September averages 20 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
20
heat index over the day's high
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 Quang 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 daysDaylight (hours)Travel score
Jan18° / 12°871410.85.1
Feb20° / 13°7513.111.25.4
Mar23° / 16°11716.411.85.6
Apr27° / 20°16819.312.54.8
May29° / 22°32423.913.13.5
Jun31° / 24°40727.113.42.7
Jul31° / 24°44327.913.22.7
Aug31° / 24°38326.712.82.9
Sep30° / 23°2262112.13.8
Oct27° / 20°1371611.55.6
Nov23° / 16°8812.210.96.4
Dec19° / 13°7111.210.65.9

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 16% of September, with mostly cloudy or overcast conditions the remaining 64%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12872
22872
32872
42971
52971
62971
72971
83070
93070
103169
113268
123268
133367
143565
153664
163664
173862
183862
193961
204159
214159
224258
234357
244456
254555
264555
274555
284654
294555
304555

Chance of precipitation in September

Any precipitation

Bắc Quang gets around 226 mm of rain over 21 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 70% and peaks near 80% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
180
280
379
479
579
678
778
877
977
1076
1176
1275
1374
1473
1572
1671
1770
1869
1968
2066
2165
2264
2363
2462
2561
2660
2759
2858
2958
3057

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 70% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10027523
20037522
30037621
40147520
50157519
60157618
70167617
80277516
90277615
100287614
110297613
1203107611
1303117610
140312769
150413758
160414757
170515746
180516736
190617725
200618715
210719695
220721675
231822645
241923634
251924624
2611026594
2711127574
2811128573
2911229553
3011330533

Wind in September

Winds average 3 km/h in September.

Across September, daily wind ranges from about 3 km/h on the calmest days to 3 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 30 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 42 minutes over September. Sunrise moves from 5:47 AM to 5:55 AM, and sunset from 6:14 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:476:14
212.45:476:13
312.45:476:12
412.45:476:11
512.45:486:10
612.35:486:09
712.35:486:08
812.35:496:07
912.35:496:06
1012.35:496:05
1112.25:506:04
1212.25:506:03
1312.25:506:02
1412.25:506:01
1512.25:516:00
1612.15:515:59
1712.15:515:58
1812.15:525:57
1912.15:525:56
2012.05:525:55
2112.05:535:54
2212.05:535:52
2312.05:535:51
2411.95:535:50
2511.95:545:49
2611.95:545:48
2711.95:545:47
2811.95:555:46
2911.85:555:45
3011.85:555:44

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.18 kWh/m².

For context, solar energy here swings from a low near 2.16 kWh/m² to a high of 4.45 kWh/m² in May across the year — September's 4.18 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
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.0Bright
224.0Bright
234.0Bright
244.0Moderate
254.0Moderate
264.0Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Hazard calendar for Bắc Quang

In seasonPeak

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

Bắc Quang'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 Quang?

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

3.8
Sightseeing
8th-best month of the year
5.0
Beach & pool
2nd-best month of the year

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

What to pack for Bắc Quang in September

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

In September, Bắc Quang sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. About 21 days see rain.

light clothesrain gear

UV index in Bắc Quang in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bắc Quang peaks around June 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJun 21UV 13Jan 1UV 5
UV index (midday)Level
Jan5High
Feb7Very high
Mar10Very high
Apr8Very high
May9Very high
Jun13Extreme
Jul12Extreme
Aug11Extreme
Sep9Very high
Oct8Very high
Nov6High
Dec5High

Air quality in Bắc Quang 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 Quang is worst in March — around 50 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (July, 19 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorMar 2150 µg/m³Jul 2119 µg/m³
PM2.5 (µg/m³)Level
Jan43Poor
Feb45Poor
Mar50Poor
Apr49Poor
May34Moderate
Jun23Moderate
Jul19Moderate
Aug20Moderate
Sep25Moderate
Oct32Moderate
Nov38Poor
Dec43Poor
Location & terrain

Where is Bắc Quang?

Bắc Quang sits at 22.5°N, 104.9°E, 70 m above sea level, in Vietnam. The nearest listed city is Thị Trấn Việt Quang, 10 km away.

Lào CaiNghĩa LộSapa

Topography around Bắc Quang

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

Within 3 km, the terrain around Bắc Quang has large variations in elevation — a maximum elevation change of 923 m around an average of 203 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,919 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,504 m.

The land around Bắc Quang is covered by trees (91%) within 3 km, trees (94%) within 16 km, and trees (89%) within 80 km.

3 km
923 m
16 km
1,919 m
80 km
2,504 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Thị Trấn Việt Quang 10 km · Hà Giang 40 km · Thị Trấn Phố Lu 72 km · Tuyên Quang 82 km · Yên Bái 85 km · Lào Cai 92 km · Nghĩa Lộ 105 km · Sapa 106 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 Quang (22.4833°, 104.8667°, elevation 70 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).