September weather forecast
Vietnam

September is a month of transition for Vietnam's climate. Northern regions see the arrival of autumn, Central Vietnam faces the tail-end of the typhoon season, and Southern Vietnam starts winding down its rainy season.

In Northern Vietnam, including cities such as Hanoi and Sapa, September brings the start of autumn. Temperatures begin to drop, ranging between 25°C (77°F) and 33°C (91.4°F), providing a pleasant respite from the summer heat. Rainfall also decreases, though occasional showers and thunderstorms can still be expected.

Central Vietnam, including the historic cities of Hue and Hoi An, experiences continued rainfall, albeit with less frequency and intensity as the month progresses. Temperatures remain fairly consistent with previous months, averaging between 24°C (75.2°F) and 33°C (91.4°F). The threat of typhoons begins to diminish, but caution is still advised during early September.

In the South, encompassing Ho Chi Minh City and the Mekong Delta, the rainfall starts to decline as the region transitions out of the peak wet season. However, temperatures remain high, averaging between 25°C (77°F) and 33°C (91.4°F), and heavy downpours can still occur, particularly in early September.

Transitioning from August to September, the weather patterns in Vietnam undergo significant changes. The North welcomes the cooler autumn climate, Central Vietnam sees a reduction in the intensity of the typhoon season, and Southern Vietnam begins its gradual departure from the monsoon season.

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• Hanoi - September »
  August and September, with an average relative humidity of 80%, are most humid months in Hanoi. On the first day of September sunrise is at 05:40 and sunset at 18:13.
• Ho Chi Minh City - September »
  Temperature records in Ho Chi Minh City mark September as the coldest month, with highs averaging 30.8°C (87.4°F) and lows at 24.4°C (75.9°F). September is the coldest month in Ho Chi Minh City, with the temperature often reaching an average high of 30.8°C (87.4°F) and an average low of 24.4°C (75.9°F).
• Da Nang - September »
  On the first day of September in Da Nang sunrise is at 05:34 and sunset at 18:00. In Da Nang, Vietnam, the average seawater temperature in September is 28.9°C (84°F).
• Hai Phong - September »
  On the first day of September in Hai Phong, Vietnam, sunrise is at 05:36 and sunset at 18:09. The average heat index, which combines relative humidity and air temperature, in September is appraised at 43°C (109.4°F).
• Can Tho - September »
  The average heat index, which combines relative humidity and air temperature, in September is evaluated at 42°C (107.6°F). In September, on the first day of the month, sunrise is at 05:47 and sunset at 18:06.
• Huế - September »
  The average temperature in Huế drops to a warm 24.5°C (76.1°F) during the night in the month of September. In Huế in September, during 20.3 rainfall days, 170mm (6.69") of precipitation is typically accumulated.
• Vinh - September »
  The month with the most rainfall in Vinh is September, when the rain falls for 18.8 days and typically aggregates up to 169mm (6.65") of precipitation. The month with the most rainfall in Vinh is September, when the rain falls for 18.8 days and typically aggregates up to 169mm (6.65") of precipitation.
• Phan Thiet - September »
  September marks a peak in Phan Thiet, Vietnam's rainfall with a total precipitation volume of 223mm (8.78") over twenty days. The initiation of September in Phan Thiet sees an average high-temperature of a still hot 30°C (86°F), showing minor variations from the previous month.
• Vũng Tàu - September »
  On the last day of September, in Vũng Tàu, sunrise is at 05:40 and sunset at 17:43 +07. In Vũng Tàu, in September, during 20 rainfall days, 253mm (9.96") of precipitation is typically accumulated.
• Thai Nguyen - September »
  The first month of the autumn, September, is still a hot month in Thai Nguyen with an average temperature fluctuating between 30.9°C (87.6°F) and 23°C (73.4°F). In Thai Nguyen, in September, it is raining for 22.6 days, with typically 150mm (5.91") of accumulated precipitation.