Cần Giờ weather in September

In September, Cần Giờ sees average daytime highs of 30°C and overnight lows near 25°C, with 301 mm of rain across 28.4 wet days and about 12.1 hours of daylight. It is the 7th-warmest and 1st-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 3% 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 Cần Giờ's 12th-clearest and 7th-windiest month. For the whole year in context, see Cần Giờ's year-round climate.

Daytime high
30°
7th warmest
Overnight low
25°
7th coldest
Rainfall
301 mm
28.4 wet days
Daylight
12 h 06 min
5:45 AM – 5:48 PM
Cloud cover
87%
12th clearest
Wind
10 km/h
7th windiest
Solar energy
4.96 kWh/m²
Travel score
2.6
out of 10

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 Cần Giờ reaches about 30°C in the afternoon and slips back to 25°C overnight — a 5°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)
13126
23126
33126
43126
53026
63026
73026
83026
93025
103025
113025
123025
133025
143025
153025
163025
173025
183025
193025
203025
213025
223025
233025
243025
253025
263025
273025
283025
293025
303025

How September really feels in Cần Giờ

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.

Cần Giờ weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°243.411.55.9
Feb30° / 24°81.311.75.9
Mar31° / 25°183.511.95.1
Apr32° / 27°5810.612.23.9
May32° / 27°20124.912.52.6
Jun31° / 26°25527.612.62.5
Jul30° / 26°25729.112.52.6
Aug30° / 26°2672912.32.6
Sep30° / 25°30128.412.12.6
Oct30° / 25°27127.311.82.9
Nov30° / 25°14216.411.54.1
Dec30° / 24°729.811.45.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 7% of September, with mostly cloudy or overcast conditions the remaining 90%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11090
21090
31090
41189
51189
61189
71189
81189
91090
101090
111090
121090
13991
14991
15991
16991
17991
18991
19991
20991
21991
22991
231090
241090
251090
26991
27991
28991
29991
30991

Chance of precipitation in September

Any precipitation

Cần Giờ gets around 301 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
794
894
994
1094
1194
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 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1397
2397
3298
4298
5397
6397
7397
8397
9397
10397
11397
12496
13496
14496
15496
16496
17595
18595
19595
20496
21496
22496
23496
24496
25496
26496
27496
28496
29496
30496

Wind in September

Winds average 10 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
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
298calm
308calm

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 5:46 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)
112.25:465:58
212.25:465:57
312.25:465:57
412.25:465:56
512.25:465:55
612.25:465:55
712.15:455:54
812.15:455:54
912.15:455:53
1012.15:455:52
1112.15:455:52
1212.15:455:51
1312.15:455:50
1412.15:455:50
1512.15:455:49
1612.15:455:48
1712.05:455:48
1812.05:455:47
1912.05:455:46
2012.05:445:46
2112.05:445:45
2212.05:445:44
2312.05:445:44
2412.05:445:43
2512.05:445:42
2612.05:445:42
2711.95:445:41
2811.95:445:40
2911.95:445:40
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 4.96 kWh/m².

For context, solar energy here swings from a low near 4.65 kWh/m² to a high of 6.45 kWh/m² in March across the year — September's 4.96 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.1Bright
75.1Bright
85.1Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in September

Hazard calendar for Cần Giờ

In seasonPeak

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

Cần Giờ sits in the Pacific typhoon belt; the season peaks July–October.

Cần Giờ's rainy season runs May–November, 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 Cần Giờ?

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

2.6
Sightseeing
8th-best month of the year
3.7
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Cần Giờ.

What to pack for Cần Giờ in September

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

In September, Cần Giờ sees daytime highs around 30°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

Sea temperature near Cần Giờ 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 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
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Cần Giờ 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 Cần Giờ peaks around March 23 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 18 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 23UV 13Nov 18UV 9
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct10Very high
Nov9Very high
Dec9Very high

Air quality in Cần Giờ 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 Cần Giờ is worst in October — around 34 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (March, 21 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateOct 1434 µg/m³Mar 1921 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb21Moderate
Mar21Moderate
Apr21Moderate
May25Moderate
Jun30Moderate
Jul29Moderate
Aug29Moderate
Sep33Moderate
Oct34Moderate
Nov31Moderate
Dec34Moderate
Location & terrain

Where is Cần Giờ?

Cần Giờ sits at 10.4°N, 107.0°E, 5 m above sea level, in Vietnam. The nearest listed city is Vũng Tàu, 16 km away.

Topography around Cần Giờ

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

Within 3 km, the terrain around Cần Giờ has only modest variations in elevation — a maximum elevation change of 15 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 244 m; within 80 km, large variations in elevation — a maximum elevation change of 895 m.

The land around Cần Giờ is covered by water (59%) within 3 km, water (67%) and mangroves (25%) within 16 km, and water (37%) and trees (33%) within 80 km.

3 km
15 m
16 km
244 m
80 km
895 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Vũng Tàu 16 km · Ấp Phước Tĩnh 25 km · Thành Phố Bà Rịa 25 km · Xóm Mỹ Xuân 26 km · Phú Mỹ 28 km · Long Diền 30 km · Xã Long Hải 31 km · Gò Công 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 Cần Giờ (10.4111°, 106.9547°, elevation 5 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).