Hương Thủy weather in September

In September, Hương Thủy sees average daytime highs of 31°C and overnight lows near 27°C, with 305 mm of rain across 19.5 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 32°C in the first days to 30°C by the end. The sky is clear or mostly clear about 15% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Hương Thủy's 10th-clearest and 8th-windiest month. For the whole year in context, see Hương Thủy's year-round climate.

Daytime high
31°
5th warmest
Overnight low
27°
8th coldest
Rainfall
305 mm
19.5 wet days
Daylight
12 h 06 min
5:41 AM – 5:46 PM
Cloud cover
76%
10th clearest
Wind
9 km/h
8th windiest
Solar energy
4.82 kWh/m²
Travel score
3.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 32°C in the first days to 30°C by the end.

A typical September day in Hương Thủy reaches about 31°C in the afternoon and slips back to 27°C overnight — a 4°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 2°C cooler than August and about 2°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13227
23227
33227
43227
53127
63127
73127
83127
93127
103127
113127
123127
133127
143127
153127
163127
173027
183027
193027
203026
213026
223026
233026
243026
253026
263026
273026
283026
292926
302926

How September really feels in Hương Thủy

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
9 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.

Hương Thủy 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
Jan24° / 20°12914.411.16.2
Feb25° / 21°691011.46.8
Mar27° / 23°717.811.97.0
Apr29° / 25°646.912.45.8
May31° / 27°8710.712.84.1
Jun33° / 28°508.4133.4
Jul33° / 28°7210.912.93.3
Aug32° / 28°1081312.63.3
Sep31° / 27°30519.512.13.5
Oct28° / 25°34122.711.64.2
Nov27° / 24°30320.411.24.9
Dec24° / 22°23320.4115.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 73%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12278
22278
32179
42179
52179
62179
72179
82080
92080
102179
112377
122377
132377
142377
152674
162674
172773
182872
192971
203070
213268
223268
233367
243367
253466
263466
273466
283565
293565
303565

Chance of precipitation in September

Any precipitation

Hương Thủy gets around 305 mm of rain over 19.5 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 71% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
154
255
355
456
557
659
760
861
962
1063
1164
1265
1366
1467
1567
1668
1768
1868
1968
2068
2168
2268
2368
2469
2569
2669
2770
2870
2970
3071

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 89% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
10397
20397
30397
40397
50397
60496
70496
80595
90595
100694
110793
120793
130892
140991
1501090
1601189
1701288
1801387
1901486
2001585
2101684
2201684
2301783
2401783
2511881
2611980
2711980
2812079
2912178
3012277

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 10 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
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
2610calm
2710calm
2810calm
2910calm
3010calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 18 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over September. Sunrise moves from 5:39 AM to 5:43 AM, and sunset from 5:59 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:395:59
212.35:405:58
312.35:405:57
412.35:405:56
512.35:405:56
612.25:405:55
712.25:405:54
812.25:405:53
912.25:405:52
1012.25:405:52
1112.25:415:51
1212.25:415:50
1312.15:415:49
1412.15:415:48
1512.15:415:47
1612.15:415:46
1712.15:415:46
1812.15:415:45
1912.05:415:44
2012.05:415:43
2112.05:425:42
2212.05:425:41
2312.05:425:41
2412.05:425:40
2511.95:425:39
2611.95:425:38
2711.95:425:37
2811.95:425:36
2911.95:435:36
3011.95:435:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.82 kWh/m².

For context, solar energy here swings from a low near 2.58 kWh/m² to a high of 6.02 kWh/m² in May across the year — September's 4.82 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.1Bright
65.1Bright
75.1Bright
85.0Bright
95.0Bright
105.0Bright
114.9Bright
124.9Bright
134.9Bright
144.8Bright
154.8Bright
164.8Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.6Bright
224.6Bright
234.6Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Hazard calendar for Hương Thủy

In seasonPeak

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

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

Hương Thủy's monsoon runs September–December, 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 Hương Thủy?

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

3.5
Sightseeing
9th-best month of the year
5.0
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Hương Thủy.

What to pack for Hương Thủy in September

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

In September, Hương Thủy sees daytime highs around 31°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near Hương Thủy 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 23 km away) is warmest in August at about 30°C and coldest in February near 22°C.

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

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan23Refreshing
Feb22Refreshing
Mar23Refreshing
Apr25Warm
May28Warm
Jun29Tropical
Jul29Tropical
Aug30Tropical
Sep29Tropical
Oct28Tropical
Nov26Warm
Dec24Warm

UV index in Hương Thủy in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hương Thủy peaks around August 12 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighAug 12UV 13Dec 15UV 6
UV index (midday)Level
Jan9Very high
Feb9Very high
Mar9Very high
Apr10Extreme
May11Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec6High

Air quality in Hương Thủy 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 Hương Thủy is worst in April — around 30 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (August, 15 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1130 µg/m³Aug 1115 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb23Moderate
Mar29Moderate
Apr30Moderate
May24Moderate
Jun19Moderate
Jul15Moderate
Aug15Moderate
Sep16Moderate
Oct18Moderate
Nov16Moderate
Dec19Moderate
Location & terrain

Where is Hương Thủy?

Hương Thủy sits at 16.4°N, 107.6°E, 9 m above sea level, in Vietnam. The nearest listed city is Hue, 7.0 km away.

Topography around Hương Thủy

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

Within 3 km, the terrain around Hương Thủy has only modest variations in elevation — a maximum elevation change of 121 m around an average of 15 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 614 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,057 m.

The land around Hương Thủy is covered by trees (50%) and cropland (22%) within 3 km, trees (47%) within 16 km, and trees (58%) and water (33%) within 80 km.

3 km
121 m
16 km
614 m
80 km
2,057 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Hue 7.0 km · Hương Trà 21 km · Phong Điền 34 km · thị xã Quảng Trị 61 km · Bà Nà 61 km · Thanh Khê 71 km · Hòa Cường 72 km · Ðông Hà 72 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 Hương Thủy (16.4218°, 107.64°, 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. 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).