Hà Tiên weather in September

In September, Hà Tiên sees average daytime highs of 30°C and overnight lows near 26°C, with 239 mm of rain across 27.1 wet days and about 12.1 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 2% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Hà Tiên's 12th-clearest and 4th-windiest month. For the whole year in context, see Hà Tiên's year-round climate.

Daytime high
30°
11th warmest
Overnight low
26°
7th coldest
Rainfall
239 mm
27.1 wet days
Daylight
12 h 06 min
5:55 AM – 5:58 PM
Cloud cover
89%
12th clearest
Wind
12 km/h
4th windiest
Solar energy
4.44 kWh/m²
Travel score
2.8
out of 10

Hà Tiên is provincial city of Kien Giang, Vietnam.

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 30°C through the month.

A typical September day in Hà Tiên reaches about 30°C in the afternoon and slips back to 26°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 32°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13026
23026
33026
43026
53026
63026
73026
83026
93026
103026
113026
123026
133026
143026
153026
163026
173026
183026
193026
203026
213026
223026
233026
243026
253026
263026
273026
283026
293026
303026

How September really feels in Hà Tiên

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
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 Tiên weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°265.611.55.1
Feb31° / 24°214.211.74.8
Mar32° / 25°639.911.93.8
Apr33° / 27°11318.712.22.9
May32° / 27°18226.612.52.5
Jun31° / 27°19826.112.62.7
Jul30° / 26°20827.612.52.8
Aug30° / 26°1962712.32.9
Sep30° / 26°23927.112.12.8
Oct30° / 25°28427.111.82.8
Nov31° / 25°11515.111.53.9
Dec30° / 24°488.211.44.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 5% of September, with mostly cloudy or overcast conditions the remaining 94%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1595
2595
3595
4496
5496
6496
7595
8595
9595
10694
11694
12694
13694
14694
15793
16793
17793
18793
19892
20892
21892
22892
23892
24892
25892
26892
27892
28793
29793
30793

Chance of precipitation in September

Any precipitation

Hà Tiên gets around 239 mm of rain over 27.1 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 91% and peaks near 92% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
189
289
389
489
589
690
790
890
990
1090
1191
1291
1391
1491
1591
1691
1791
1891
1991
2091
2191
2291
2391
2491
2591
2692
2792
2892
2992
3092

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 95% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1694
2694
3694
4595
5595
6595
7595
8595
9595
10595
11595
12595
13595
14595
15595
16595
17595
18595
19595
20595
21595
22595
23694
24694
25694
26694
27793
28793
29793
30793

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712calm
1812calm
1912calm
2011calm
2111calm
2211calm
2311calm
2410calm
2510calm
2610calm
2710calm
2810calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 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 18 minutes over September. Sunrise moves from 5:56 AM to 5:54 AM, and sunset from 6:08 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:566:08
212.25:566:07
312.25:566:07
412.25:566:06
512.25:556:05
612.25:556:05
712.15:556:04
812.15:556:03
912.15:556:03
1012.15:556:02
1112.15:556:01
1212.15:556:01
1312.15:556:00
1412.15:555:59
1512.15:555:59
1612.15:555:58
1712.05:555:57
1812.05:555:57
1912.05:545:56
2012.05:545:55
2112.05:545:55
2212.05:545:54
2312.05:545:53
2412.05:545:53
2512.05:545:52
2612.05:545:51
2711.95:545:51
2811.95:545:50
2911.95:545:50
3011.95:545:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.44 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.44 kWh/m² to a high of 6.01 kWh/m² in March across the year — September's 4.44 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Hà Tiên

In seasonPeak

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

Hà Tiên sits in the Pacific typhoon belt; the season peaks July–October.

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

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

Is September a good time to visit Hà Tiên?

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

2.8
Sightseeing
8th-best month of the year
3.9
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Hà Tiên.

What to pack for Hà Tiên in September

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

In September, Hà Tiên sees daytime highs around 30°C and nights near 26°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

Sea temperature near Hà Tiên 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 offshore is warmest in May at about 31°C and coldest in January near 28°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr30Tropical
May31Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Hà Tiên in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (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 Tiên peaks around August 19 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highAug 19UV 13Dec 11UV 9
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct10Extreme
Nov9Very high
Dec9Very high

Air quality in Hà Tiên 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 Tiên is worst in February — around 33 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (August, 13 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateFeb 1332 µg/m³Aug 2013 µg/m³
PM2.5 (µg/m³)Level
Jan29Moderate
Feb33Moderate
Mar28Moderate
Apr23Moderate
May17Moderate
Jun14Moderate
Jul15Moderate
Aug13Moderate
Sep14Moderate
Oct18Moderate
Nov21Moderate
Dec21Moderate
Location & terrain

Where is Hà Tiên?

Hà Tiên sits at 10.4°N, 104.5°E, 8 m above sea level, in Vietnam. The nearest listed city is Kep, 22 km away.

Topography around Hà Tiên

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

Within 3 km, the terrain around Hà Tiên has only modest variations in elevation — a maximum elevation change of 163 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 163 m; within 80 km, large variations in elevation — a maximum elevation change of 1,080 m.

The land around Hà Tiên is covered by water (37%) within 3 km, water (59%) within 16 km, and water (45%) and cropland (35%) within 80 km.

3 km
163 m
16 km
163 m
80 km
1,080 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: Kep 22 km · Kampot 42 km · Hàm Ninh 53 km · Tịnh Biên 55 km · Cô Tô 58 km · Phu Quoc 59 km · Kiên Hải 60 km · Ângk Tasaôm 73 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 Tiên (10.3831°, 104.4875°, elevation 8 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).