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Weather in Vietnam for September 2025

Your guide to Vietnam weather in September - trends and predictions
  • In general, the average temperature in Vietnam at the beginning of September is 33.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 29.7 °C by the end of September.

  • Vietnam experiences an exceptionally high level of rainfall in September, with more than 24 rainy days on average.

  • Is September a good time to visit Vietnam? check out the best time to travel to Vietnam page.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
4
Dry days
Average rainy days
26
Rainy days
Average snowy days
0
Snow days
Average temperatures
31°/24°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
81 %
Avg humidity

Vietnam in September average weather

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Temperatures trend during September in Vietnam

See the weather trend as well as the moving average line
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September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
34° /25° 1.4 mm 8
2 Sept. Partly cloudy
Partly cloudy
35° /25° 0.9 mm 8
3 Sept. Cloudy
Cloudy
33° /25° 1.3 mm 8
4 Sept. Light rain shower
Light rain shower
31° /24° 6.2 mm 8
5 Sept. Patchy rain possible
Patchy rain possible
35° /25° 2.8 mm 8
6 Sept. Light rain shower
Light rain shower
36° /24° 3.3 mm 8
7 Sept. Light rain shower
Light rain shower
32° /25° 33.4 mm 7
8 Sept. Patchy rain possible
Patchy rain possible
31° /24° 18.1 mm 7
9 Sept. Light rain shower
Light rain shower
31° /24° 17.2 mm 7
10 Sept. Torrential rain shower
Torrential rain shower
29° /24° 30.3 mm 7
11 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
29° /24° 33.3 mm 7
12 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
30° /24° 34.9 mm 7
13 Sept. Heavy rain
Heavy rain
29° /22° 52.3 mm 7
14 Sept. Mist
Mist
28° /23° 0.9 mm 6
15 Sept. Overcast
Overcast
32° /24° 4.9 mm 7
16 Sept. Patchy light rain
Patchy light rain
31° /24° 10.9 mm 7
17 Sept. Light rain shower
Light rain shower
31° /24° 17.2 mm 7
18 Sept. Light rain shower
Light rain shower
30° /24° 13.5 mm 7
19 Sept. Light rain shower
Light rain shower
33° /23° 8.6 mm 7
20 Sept. Light rain shower
Light rain shower
30° /24° 12.3 mm 7
21 Sept. Light rain shower
Light rain shower
33° /24° 10.1 mm 7
22 Sept. Patchy rain possible
Patchy rain possible
30° /24° 12.6 mm 7
23 Sept. Light rain shower
Light rain shower
31° /24° 0.8 mm 7
24 Sept. Light rain shower
Light rain shower
29° /22° 2.1 mm 7
25 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
28° /23° 4 mm 6
26 Sept. Light rain shower
Light rain shower
29° /23° 4.6 mm 7
27 Sept. Light rain shower
Light rain shower
28° /23° 9.4 mm 6
28 Sept. Light rain shower
Light rain shower
31° /24° 7.4 mm 7
29 Sept. Light rain shower
Light rain shower
31° /24° 12.5 mm 7
30 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
32° /24° 14.7 mm 7
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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.

Vietnam in September - FAQ

Is September a good time to visit Vietnam?
You can travel to Vietnam in September, but there are probably better months doing so, read more about the best time to visit Vietnam
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 350.5 mm is expected in Vietnam during September, occurring over more than 26 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 13 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Vietnam in September?

As you prepare for your trip to Vietnam in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Vietnam, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Lightweight Clothing: T-shirts, blouses, shorts, skirts
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
    • Sandals/Flip-flops: Comfortable for warm climates
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Umbrellas/Raincoats: For rainy days
  • Personal Items
    • Sunscreen: High SPF for sunny destinations
    • Lip Balm with SPF: To protect against chapped lips
    • Insect Repellent: For destinations with mosquitos or other insects

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 ☀️
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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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