Weather in Vietnam for September 2027
In general, the average temperature in Vietnam at the beginning of September is 32.9 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 30.1 °C by the end of September.
Vietnam in September brings notable rainfall, with an average of 20 rainy days and a total precipitation of 326 mm.
Is September a good time to visit Vietnam? check out the best time to travel to Vietnam page.
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Vietnam Weather September
What’s the Weather Like in Vietnam This September?
Temperatures trend during September in Vietnam
September weather in Vietnam day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Moderate or heavy rain shower | 33° /25° | 5.2 mm | 7 | |
| 2 Sept. | Patchy rain possible | 33° /25° | 1.5 mm | 8 | |
| 3 Sept. | Patchy rain possible | 33° /25° | 0.9 mm | 8 | |
| 4 Sept. | Light rain | 32° /25° | 3.1 mm | 7 | |
| 5 Sept. | Light rain | 33° /25° | 2.5 mm | 7 | |
| 6 Sept. | Patchy rain possible | 34° /24° | 1.7 mm | 7 | |
| 7 Sept. | Moderate rain | 32° /25° | 14.1 mm | 8 | |
| 8 Sept. | Moderate rain | 31° /25° | 14.9 mm | 8 | |
| 9 Sept. | Moderate rain | 30° /24° | 14.3 mm | 7 | |
| 10 Sept. | Moderate rain | 30° /24° | 15.4 mm | 6 | |
| 11 Sept. | Moderate rain | 31° /24° | 14.9 mm | 7 | |
| 12 Sept. | Moderate rain | 31° /24° | 13.1 mm | 8 | |
| 13 Sept. | Moderate rain | 30° /24° | 23.1 mm | 6 | |
| 14 Sept. | Moderate rain | 29° /24° | 13.4 mm | 6 | |
| 15 Sept. | Moderate rain | 30° /24° | 22.7 mm | 6 | |
| 16 Sept. | Moderate rain | 30° /24° | 21.5 mm | 6 | |
| 17 Sept. | Moderate rain | 30° /24° | 21.5 mm | 6 | |
| 18 Sept. | Light rain | 30° /24° | 8 mm | 6 | |
| 19 Sept. | Light rain | 32° /24° | 4.4 mm | 7 | |
| 20 Sept. | Light rain | 32° /25° | 5.1 mm | 7 | |
| 21 Sept. | Light rain | 33° /24° | 7.8 mm | 8 | |
| 22 Sept. | Moderate rain | 30° /24° | 10 mm | 7 | |
| 23 Sept. | Light rain | 32° /24° | 4 mm | 7 | |
| 24 Sept. | Light rain | 30° /23° | 4.9 mm | 7 | |
| 25 Sept. | Moderate rain | 29° /23° | 15.7 mm | 7 | |
| 26 Sept. | Light rain | 30° /23° | 4.6 mm | 7 | |
| 27 Sept. | Light rain | 30° /24° | 7.6 mm | 7 | |
| 28 Sept. | Moderate rain | 31° /24° | 12.4 mm | 7 | |
| 29 Sept. | Moderate rain | 30° /24° | 24.1 mm | 6 | |
| 30 Sept. | Moderate rain | 31° /24° | 13.9 mm | 7 | |
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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.