Trảng Bom weather in September

In September, Trảng Bom sees average daytime highs of 31°C and overnight lows near 25°C, with 290 mm of rain across 28.4 wet days and about 12.1 hours of daylight. It is the 10th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 1% 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 Trảng Bom's 12th-clearest and 7th-windiest month. For the whole year in context, see Trảng Bom's year-round climate.

Daytime high
31°
10th warmest
Overnight low
25°
7th coldest
Rainfall
290 mm
28.4 wet days
Daylight
12 h 06 min
5:45 AM – 5:48 PM
Cloud cover
89%
12th clearest
Wind
7 km/h
7th windiest
Solar energy
4.45 kWh/m²
Travel score
2.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical September day in Trảng Bom reaches about 31°C in the afternoon and slips back to 25°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 29°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)
13125
23125
33125
43125
53125
63125
73125
83125
93125
103125
113125
123125
133125
143025
153025
163025
173025
183025
193025
203025
213125
223125
233125
243125
253125
263125
273125
283125
293125
303125

How September really feels in Trảng Bom

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.

Trảng Bom weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°213.611.45.2
Feb32° / 23°91.911.64.7
Mar33° / 25°245.111.93.8
Apr34° / 26°7312.512.23.0
May33° / 26°20624.712.52.3
Jun31° / 26°25827.412.62.4
Jul31° / 25°27829.412.62.5
Aug31° / 25°28229.212.42.5
Sep31° / 25°29028.412.12.5
Oct31° / 25°23326.611.82.8
Nov31° / 24°12315.711.53.9
Dec30° / 23°619.111.44.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% 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 93%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1793
2793
3793
4694
5694
6694
7694
8694
9694
10694
11694
12694
13694
14595
15595
16595
17595
18694
19694
20694
21694
22694
23694
24793
25793
26793
27793
28793
29793
30892

Chance of precipitation in September

Any precipitation

Trảng Bom gets around 290 mm of rain over 28.4 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 95% and peaks near 95% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
194
294
394
494
594
694
795
895
995
1095
1195
1295
1395
1495
1595
1695
1795
1895
1995
2095
2195
2295
2395
2495
2595
2695
2795
2895
2995
3095

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 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1595
2694
3694
4694
5694
6694
7694
8694
9694
10694
11694
12694
13694
14694
15694
16694
17694
18694
19694
20694
21694
22694
23595
24595
25694
26694
27694
28694
29694
30793

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
256calm
266calm
276calm
286calm
296calm
306calm

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 5:45 AM to 5:44 AM, and sunset from 5:58 PM to 5:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:455:58
212.25:455:57
312.25:455:57
412.25:455:56
512.25:455:56
612.25:455:55
712.25:455:54
812.15:455:54
912.15:455:53
1012.15:455:52
1112.15:455:52
1212.15:455:51
1312.15:455:50
1412.15:455:49
1512.15:455:49
1612.15:455:48
1712.05:445:47
1812.05:445:47
1912.05:445:46
2012.05:445:45
2112.05:445:45
2212.05:445:44
2312.05:445:43
2412.05:445:43
2512.05:445:42
2612.05:445:41
2711.95:445:41
2811.95:445:40
2911.95:445:39
3011.95:445:39

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.45 kWh/m².

For context, solar energy here swings from a low near 4.42 kWh/m² to a high of 6.08 kWh/m² in March across the year — September's 4.45 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.6Bright
64.6Bright
74.6Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
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 Trảng Bom

In seasonPeak

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

Trảng Bom sits in the Pacific typhoon belt; the season peaks July–October.

Trảng Bom'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 Trảng Bom?

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

2.5
Sightseeing
8th-best month of the year
3.6
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Trảng Bom.

What to pack for Trảng Bom in September

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

In September, Trảng Bom sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. About 28 days see rain.

light clothesrain gear

Sea temperature near Trảng Bom 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 66 km away) is warmest in May at about 30°C and coldest in January near 26°C.

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

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar27Warm
Apr29Tropical
May30Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Trảng Bom 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 Trảng Bom peaks around March 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 16 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 highMar 22UV 13Nov 16UV 9
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun11Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct9Very high
Nov9Very high
Dec9Very high

Air quality in Trảng Bom 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 Trảng Bom is worst in October — around 38 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorPoorModeratePoorOct 1938 µg/m³Jul 2432 µg/m³
PM2.5 (µg/m³)Level
Jan37Poor
Feb34Moderate
Mar36Poor
Apr35Moderate
May34Moderate
Jun35Moderate
Jul32Moderate
Aug32Moderate
Sep35Poor
Oct38Poor
Nov37Poor
Dec34Moderate
Location & terrain

Where is Trảng Bom?

Trảng Bom sits at 11.0°N, 107.0°E, 61 m above sea level, in Vietnam. The nearest listed city is Long Thành, 19 km away.

Topography around Trảng Bom

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

Within 3 km, the terrain around Trảng Bom has only modest variations in elevation — a maximum elevation change of 57 m around an average of 58 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 476 m; within 80 km, large variations in elevation — a maximum elevation change of 1,018 m.

The land around Trảng Bom is covered by trees (45%) and artificial surfaces (35%) within 3 km, trees (57%) and artificial surfaces (20%) within 16 km, and trees (58%) within 80 km.

3 km
57 m
16 km
476 m
80 km
1,018 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Long Thành 19 km · Biên Hòa 20 km · Xuân Lộc 25 km · Dĩ An 26 km · Long Khánh 27 km · Tân Uyên 28 km · Thủ Đức 28 km · Thuận An 32 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 Trảng Bom (10.9536°, 107.0059°, elevation 61 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).