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Vietnam weather

Weather in Vietnam for September 2025

Your guide to Vietnam weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Vietnam at the beginning of September is 33 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 30.3 °C by the end of September.

    • Rain 🌧️

  • Vietnam experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 305.6 mm.

Average dry days
0
Dry days
Average rainy days
30
Rainy days
Average snowy days
0
Snow days
Average temperatures
31°/24°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Vietnam in September average weather

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Moderate or heavy rain shower
33°
2
Heavy rain at times
33°
3
Patchy rain possible
33°
4
Heavy rain at times
31°
5
Moderate or heavy rain shower
34°
6
Moderate rain at times
35°
7
Light rain shower
32°
8
Moderate or heavy rain shower
30°
9
Moderate rain at times
30°
10
Partly cloudy
30°
11
Sunny
31°
12
Sunny
32°
13
Moderate or heavy rain shower
30°
14
Patchy rain possible
30°
15
Moderate or heavy rain shower
32°
16
Moderate or heavy rain shower
31°
17
Moderate or heavy rain shower
31°
18
Light rain shower
31°
19
Overcast
33°
20
Light rain shower
31°
21
Light rain shower
33°
22
Moderate or heavy rain shower
30°
23
Moderate or heavy rain shower
32°
24
Patchy rain possible
30°
25
Moderate or heavy rain shower
29°
26
Patchy rain possible
30°
27
Patchy rain possible
30°
28
Partly cloudy
31°
29
Partly cloudy
31°
30
Moderate or heavy rain shower
31°
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Temperatures trend during September in Vietnam

See the weather trend as well as the moving average line

September weather day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /25° 4.3 mm 7
2 Sept. Heavy rain at times
Heavy rain at times
 33° /25° 2.2 mm 8
3 Sept. Patchy rain possible
Patchy rain possible
 33° /25° 1.3 mm 7
4 Sept. Heavy rain at times
Heavy rain at times
 31° /24° 4.6 mm 7
5 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 34° /24° 3.6 mm 8
6 Sept. Moderate rain at times
Moderate rain at times
 35° /24° 2.2 mm 8
7 Sept. Light rain shower
Light rain shower
 32° /24° 20 mm 7
8 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /24° 22.3 mm 7
9 Sept. Moderate rain at times
Moderate rain at times
 30° /24° 14.4 mm 7
10 Sept. Partly cloudy
Partly cloudy
 30° /24° 16.1 mm 7
11 Sept. Sunny
Sunny
 31° /24° 17.1 mm 7
12 Sept. Sunny
Sunny
 32° /24° 17.5 mm 7
13 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /23° 32.2 mm 7
14 Sept. Patchy rain possible
Patchy rain possible
 30° /24° 6 mm 7
15 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 32° /24° 5.7 mm 7
16 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /24° 15.7 mm 7
17 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /24° 15.6 mm 7
18 Sept. Light rain shower
Light rain shower
 31° /23° 7.8 mm 7
19 Sept. Overcast
Overcast
 33° /24° 4.3 mm 7
20 Sept. Light rain shower
Light rain shower
 31° /24° 7.5 mm 7
21 Sept. Light rain shower
Light rain shower
 33° /24° 9 mm 7
22 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /24° 11.5 mm 6
23 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 32° /23° 4.2 mm 7
24 Sept. Patchy rain possible
Patchy rain possible
 30° /23° 6.2 mm 7
25 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /23° 8.2 mm 6
26 Sept. Patchy rain possible
Patchy rain possible
 30° /23° 4.2 mm 7
27 Sept. Patchy rain possible
Patchy rain possible
 30° /23° 5 mm 7
28 Sept. Partly cloudy
Partly cloudy
 31° /23° 10.9 mm 7
29 Sept. Partly cloudy
Partly cloudy
 31° /24° 13 mm 7
30 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /23° 12.8 mm 7
Next
Important Notice
Our weather forecast for Vietnam in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Vietnam forecast closer to your planned date for the most up-to-date weather information.

Guide for Vietnam in September

In September, Vietnam experiences varying weather conditions from north to south. In the northern regions, such as Hanoi, the beginning of September sees the tail end of the summer season, with temperatures averaging around 28°.

However, as the month progresses, the weather begins to transition into the autumn season, bringing cooler temperatures and occasional rain showers. By the end of September, temperatures in Hanoi can drop to around 25°.

Moving south to Ho Chi Minh City, the weather in September is characterized by hot and humid conditions at the start of the month, with temperatures averaging around 30°. As the month progresses, the heat begins to subside, and occasional rain showers provide relief from the humidity.

By the end of September, temperatures in Ho Chi Minh City can decrease to around 28°.

In central Vietnam, cities like Da Nang experience similar weather patterns, with temperatures starting around 29° at the beginning of the month and dropping to around 26° by the end of September.

Overall, September marks the transition from the peak of summer to the onset of the cooler autumn season in Vietnam.

Have you visited Vietnam in September? Share your experience by writing a review.

Vietnam in September - FAQ

What are the expected maximum and minimum temperatures in Vietnam during September?
During September, expect a variety of temperatures with highs around 31° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Vietnam during September?
Significant rainfall exceeding 305.6 mm is expected in Vietnam during September, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Vietnam during September?
The average wind speed in Vietnam during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Vietnam

Explore the daily rainfall trends and prepare for Vietnams September weather 💧

UV exposure in Vietnam during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Regions in Vietnam
Choose a region for an accurate weather forecasts
Bà Rịa-Vũng TàuDa NangHanoiHo Chi MinhKhánh HòaKiến GiangLào CaiNinh BìnhQuảng NamQuảng NinhThừa Thiên-Huế
Top locations in Vietnam
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Da NangHanoiHo Chi Minh CityHoi AnHuếHạ LongNha TrangNinh BìnhPhu Quoc IslandSa PaVũng Tàu
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Location coordinates Where is Vietnam?

Get accurate weather forecasts for Vietnam, located at latitude 21.025 and longitude 105.841. Stay updated with localized weather information tailored for Vietnam.

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