Hà Giang weather in September

In September, Hà Giang sees average daytime highs of 29°C and overnight lows near 22°C, with 189 mm of rain across 19.4 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 28°C by the end. The sky is clear or mostly clear about 19% 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 Hà Giang's 3rd-clearest and 10th-windiest month. For the whole year in context, see Hà Giang's year-round climate.

Daytime high
29°
4th warmest
Overnight low
22°
9th coldest
Rainfall
189 mm
19.4 wet days
Daylight
12 h 06 min
5:50 AM – 5:58 PM
Cloud cover
68%
3rd clearest
Wind
3 km/h
10th windiest
Solar energy
4.19 kWh/m²
Travel score
4.2
out of 10

Hà Giang is capital city of Hà Giang province.

Density
411/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

Highs ease over the month, from about 30°C in the first days to 28°C by the end.

A typical September day in Hà Giang reaches about 29°C in the afternoon and slips back to 22°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)
13023
23023
33023
43023
53023
63023
73023
83023
93023
102922
112922
122922
132922
142922
152922
162922
172922
182922
192922
202922
212922
222922
232922
242821
252821
262821
272821
282821
292821
302821

How September really feels in Hà Giang

Once humidity and wind are folded in, September averages 13 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
13
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.

Hà Giang 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
Jan17° / 12°10616.510.84.5
Feb19° / 13°8715.311.24.9
Mar22° / 16°12918.111.85.2
Apr26° / 19°16920.512.54.8
May29° / 22°2992413.13.8
Jun30° / 23°3742713.42.9
Jul30° / 24°39628.213.32.8
Aug30° / 23°31826.312.83.0
Sep29° / 22°18919.412.14.2
Oct26° / 19°12115.311.55.8
Nov23° / 16°9713.410.96.1
Dec19° / 12°8512.610.65.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 64%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12971
23070
33070
43070
53070
63169
73169
83169
93268
103268
113367
123367
133466
143565
153565
163664
173664
183862
193862
203961
214060
224258
234258
244357
254357
264258
274456
284456
294357
304357

Chance of precipitation in September

Any precipitation

Hà Giang gets around 189 mm of rain over 19.4 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 65% and peaks near 78% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
178
278
377
476
575
675
774
873
972
1071
1170
1269
1368
1467
1566
1665
1764
1862
1961
2060
2159
2258
2357
2457
2556
2655
2754
2854
2953
3053

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 66% of days. Sticky, muggy-or-worse air turns up on roughly 92% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1009856
20010855
30011845
40012835
50113815
60114814
71115794
81216774
91217773
101217773
111318753
121319743
131420732
142421712
152522692
162523691
172623681
182724661
193725641
203827611
213928591
223929581
2331031551
2431132531
2541134501
2641235491
2741336460
2841338450
2951438420
3051539410

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 4 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
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

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 5:46 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)
112.55:466:14
212.45:466:13
312.45:476:12
412.45:476:11
512.45:476:10
612.45:476:09
712.35:486:08
812.35:486:07
912.35:486:06
1012.35:496:05
1112.25:496:04
1212.25:496:02
1312.25:506:01
1412.25:506:00
1512.25:505:59
1612.15:505:58
1712.15:515:57
1812.15:515:56
1912.15:515:55
2012.05:525:54
2112.05:525:53
2212.05:525:52
2312.05:535:51
2411.95:535:50
2511.95:535:49
2611.95:545:48
2711.95:545:47
2811.95:545:46
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 4.19 kWh/m².

For context, solar energy here swings from a low near 2.03 kWh/m² to a high of 4.45 kWh/m² in August across the year — September's 4.19 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.0Bright
234.0Bright
244.0Bright
254.0Moderate
264.0Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.8Moderate
Planning a trip in September

Hazard calendar for Hà Giang

In seasonPeak

In September, Hà Giang sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Hà Giang's rainy season runs May–September, when most of the year's rain falls.

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

Is September a good time to visit Hà Giang?

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

4.2
Sightseeing
8th-best month of the year
5.2
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Hà Giang for sightseeing.

What to pack for Hà Giang in September

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

In September, Hà Giang sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 19 days see rain.

light clothesrain gear

UV index in Hà Giang in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hà Giang peaks around June 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 21UV 13Dec 20UV 6
UV index (midday)Level
Jan6High
Feb8Very high
Mar11Extreme
Apr9Very high
May10Extreme
Jun13Extreme
Jul13Extreme
Aug11Extreme
Sep10Very high
Oct8Very high
Nov7High
Dec6High

Air quality in Hà Giang 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 Hà Giang 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 Hà Giang?

Hà Giang sits at 22.8°N, 105.0°E, 107 m above sea level, in Vietnam. The nearest listed city is Bắc Quang, 40 km away.

Thị Trấn Phố LuLào CaiTuyên QuangBắc KạnThị Trấn Nước HaiYên Bái

Topography around Hà Giang

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

Within 3 km, the terrain around Hà Giang has large variations in elevation — a maximum elevation change of 656 m around an average of 198 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,993 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,490 m.

The land around Hà Giang is covered by trees (82%) within 3 km, trees (91%) within 16 km, and trees (84%) within 80 km.

3 km
656 m
16 km
1,993 m
80 km
2,490 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Bắc Quang 40 km · Thị Trấn Việt Quang 49 km · Thị Trấn Phố Lu 99 km · Lào Cai 111 km · Tuyên Quang 114 km · Bắc Kạn 115 km · Thị Trấn Nước Hai 120 km · Yên Bái 123 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 Hà Giang (22.8233°, 104.9836°, elevation 107 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).