Thái Hòa weather in September

In September, Thái Hòa sees average daytime highs of 30°C and overnight lows near 24°C, with 322 mm of rain across 20.4 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 31°C in the first days to 29°C by the end. The sky is clear or mostly clear about 15% of the time in September, and the air most often feels oppressive.

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 Thái Hòa's 9th-clearest and 9th-windiest month. For the whole year in context, see Thái Hòa's year-round climate.

Daytime high
30°
5th warmest
Overnight low
24°
8th coldest
Rainfall
322 mm
20.4 wet days
Daylight
12 h 06 min
5:51 AM – 5:58 PM
Cloud cover
77%
9th clearest
Wind
5 km/h
9th windiest
Solar energy
4.25 kWh/m²
Travel score
3.7
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 31°C in the first days to 29°C by the end.

A typical September day in Thái Hòa reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 33°C. Set against its neighbours, September runs about 2°C cooler than August and about 3°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13124
23124
33124
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143024
153024
163024
173023
183023
192923
202923
212923
222923
232923
242923
252923
262923
272923
282923
292923
302923

How September really feels in Thái Hòa

Once humidity and wind are folded in, September averages 27 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
27
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.

Thái Hòa weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 14°6111.4115.8
Feb22° / 15°509.911.46.3
Mar25° / 18°801311.96.2
Apr29° / 21°11614.612.44.7
May32° / 24°17517.512.93.3
Jun33° / 26°12212.913.12.9
Jul33° / 26°18014.9133.0
Aug31° / 25°27920.712.63.1
Sep30° / 24°32220.412.13.7
Oct27° / 21°29217.811.65.3
Nov24° / 18°1071211.16.4
Dec21° / 15°7711.910.96.0

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 11% of September, with mostly cloudy or overcast conditions the remaining 74%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11783
21783
31783
41783
51783
61882
71882
81981
92080
102179
112179
122278
132278
142476
152476
162674
172773
182872
192872
203070
213268
223268
233466
243466
253565
263664
273664
283763
293763
303862

Chance of precipitation in September

Any precipitation

Thái Hòa gets around 322 mm of rain over 20.4 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 69% and peaks near 72% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
172
272
372
472
572
672
772
872
972
1071
1171
1271
1371
1470
1570
1669
1769
1868
1967
2067
2166
2265
2365
2465
2565
2664
2764
2864
2965
3065

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 72% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10007129
20017128
30017227
40017425
50017524
60027523
70127522
80127522
90127621
100137620
110137620
120137719
130247519
140257419
150257518
160267418
170277318
180277417
190287317
200297217
2102107117
2203107017
2303117016
2403126916
2503136915
2603146914
2703156913
2803166912
2904176811
3014186710

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

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 5:48 AM to 5:54 AM, and sunset from 6:11 PM to 5:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:486:11
212.45:496:10
312.35:496:09
412.35:496:09
512.35:496:08
612.35:496:07
712.35:506:06
812.35:506:05
912.25:506:04
1012.25:506:03
1112.25:506:02
1212.25:516:01
1312.25:516:00
1412.15:515:59
1512.15:515:59
1612.15:515:58
1712.15:515:57
1812.15:525:56
1912.15:525:55
2012.05:525:54
2112.05:525:53
2212.05:525:52
2312.05:535:51
2412.05:535:50
2511.95:535:49
2611.95:535:48
2711.95:535:48
2811.95:545:47
2911.95:545:46
3011.85:545:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.25 kWh/m².

For context, solar energy here swings from a low near 2.66 kWh/m² to a high of 5.28 kWh/m² in May across the year — September's 4.25 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.2Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.1Bright
264.1Bright
274.1Bright
284.1Bright
294.0Bright
304.0Bright
Planning a trip in September

Hazard calendar for Thái Hòa

In seasonPeak

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

Thái Hòa's rainy season runs July–October, 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 Thái Hòa?

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

3.7
Sightseeing
8th-best month of the year
5.0
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Thái Hòa.

What to pack for Thái Hòa in September

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

In September, Thái Hòa sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. About 20 days see rain.

light clothesrain gear

Sea temperature near Thái Hòa in September

The nearest coast averages about 30°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 69 km away) is warmest in August at about 30°C and coldest in February near 21°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
Feb21Refreshing
Mar22Refreshing
Apr24Warm
May28Warm
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct28Warm
Nov26Warm
Dec23Refreshing

UV index in Thái Hòa 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 Thái Hòa peaks around August 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 14UV 13Dec 17UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar11Extreme
Apr11Extreme
May10Extreme
Jun13Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in Thái Hòa 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 Thái Hòa is worst in April — around 81 µg/m³ PM2.5 (unhealthy), about 5.3× the cleanest month (July, 15 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyModeratePoorApr 1278 µg/m³Jul 2215 µg/m³
PM2.5 (µg/m³)Level
Jan39Poor
Feb44Poor
Mar66Unhealthy
Apr81Unhealthy
May31Moderate
Jun21Moderate
Jul15Moderate
Aug16Moderate
Sep22Moderate
Oct30Moderate
Nov34Moderate
Dec39Poor
Location & terrain

Where is Thái Hòa?

Thái Hòa sits at 18.9°N, 105.0°E, 64 m above sea level, in Vietnam. The nearest listed city is Kim Liên, 36 km away.

Topography around Thái Hòa

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

Within 3 km, the terrain around Thái Hòa has large variations in elevation — a maximum elevation change of 642 m around an average of 170 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,319 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,933 m.

The land around Thái Hòa is covered by trees (89%) within 3 km, trees (90%) within 16 km, and trees (86%) within 80 km.

3 km
642 m
16 km
1,319 m
80 km
1,933 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Kim Liên 36 km · Diễn Thành 66 km · Yên Vinh 78 km · Vinh 80 km · Bến Thủy 82 km · Bản Na Hỷ 85 km · Nghi Xuân 87 km · Hoàng Mai 87 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 Thái Hòa (18.9203°, 104.9744°, elevation 64 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. 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).