Vietnam in september: average Weather, Temperature and Climate, Where to go?
Weather in Vietnam in september 2025
Below, find the the weather forecast for the month of september for most popular cities in Vietnam. These forecasts are probabilities for the month of september from weather reports for over 10 years. The percentage indicates the probability of having the weather mentioned.
Average weather in september in Hanoi
good weather UV index: 7
Weather at 6am
79°F
Partly Cloudy
32% of time
26%
17%
11%
Weather at 12pm
92°F
Moderate rain at times
26% of time
25%
22%
14%
Weather at 6pm
83°F
Clear/Sunny
28% of time
26%
21%
17%
Weather at 3am
77°F
28%
19%
17%
17%
Where to go in Vietnam in september?
Where to go in Vietnam in september: destination map
Where to go in each region in september?
| North Vietnam (Hanoi, Sapa (North Vietnam), Halong Bay...) | 77°F to 92°F | 10 à 18 days | 85°F to 86°F | tolerable weather* |
| South Vietnam (Ho Chi Minh City, Phu Quoc island (Koh Trol), Mekong Delta...) | 85°F to 90°F | 13 à 25 days | 85°F | tolerable weather* |
| Vietnam Central Coast (Hoi An, Nha Trang, Vinh...) | 86°F to 90°F | 11 à 16 days | 85°F | tolerable weather* |
| Vietnam Central Mountains (Dalat, Buon Ma Thuot, Pleiku...) | 79°F to 88°F | 23 à 27 days | very bad weather* |
Where should you go in Vietnam in september when it comes to the weather?
Remember:
The climate in Vietnam in september ranges from tolerable to very bad depending on the region and city.
A slight decrease in heat and precipitation contributes to a discrete improvement of the climate throughout September in Vietnam. The north sees its climatic conditions progress towards more favorable conditions; while for the rest of the country, heavy rains are still present.
North Vietnam in September
The heat and the showers regress slowly and already, the weather in Vietnam throughout September differs from that of the previous month, by the number of rainy days and by the feeling of comfort as the heat is more acceptable.
Central Vietnam in September
Hoi An and Hue have seen their precipitation rise remarkably. Their geographical situations favor more humidity, because of the great monsoon that blows over Asia at this time of the year.
South Vietnam in September
Ho Chi Minh City and Phu Quoc Island have the same climatic conditions as last month. With the regression of temperatures, the heat begins to become more comfortable.
Climate in Vietnam in september
Climate in Hanoi in september
In the month of september, maximum temperature is 92°F and minimum temperature is 79°F (for an average temperature of 86°F). The climate is very hot here in the month of september. With 8.2in over 12 days, rainfall can happen throughout your holidays. But this is rather reasonably and you will not be too bothered by it.
With a correct climate, september is okay (but not the best time) for traveling in this city.
| September | |||
| Average temperature | 86°F | ||
| Highest temperature | 92°F | ||
| Lowest temperature | 79°F | ||
| Sea temperature | 85°F | ||
| Rainfall | 8.2in | ||
| Number of days with rainfall | 12 day(s) (40%) | ||
| Humidity | 88% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 44% | ||
| Length of day | 12:16 | ||
| Our opinion at whereandwhen.net | good |
Climate in Halong Bay in september
In the month of september, maximum temperature is 88°F and minimum temperature is 79°F (for an average temperature of 85°F). The climate is very warm in that area in september. With 11.7in over 12 days, rain is to be feared for your stay. Consider to pack adapted clothes.
With a correct weather, september is okay (but not the best time) for traveling in this city in Vietnam.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 88°F | ||
| Lowest temperature | 79°F | ||
| Sea temperature | 84°F | ||
| Rainfall | 11.7in | ||
| Number of days with rainfall | 12 day(s) (42%) | ||
| Humidity | 85% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 37% | ||
| Length of day | 12:16 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Dalat in september
In the month of september, the mean temperature in Dalat is 74°F (maximum temperature is 79°F and minimum temperature is 68°F). The climate quite enjoyable there in this month. With 29.8in over 27 days, the weather is rather to rain during your stay. So remember to bring adapted clothes.
| September | |||
| Average temperature | 74°F | ||
| Highest temperature | 79°F | ||
| Lowest temperature | 68°F | ||
| Rainfall | 29.8in | ||
| Number of days with rainfall | 27 day(s) (90%) | ||
| Humidity | 97% | ||
| Daily sunshine hours | 9 | ||
| Cloud cover | 76% | ||
| Length of day | 12:12 | ||
| Our opinion at whereandwhen.net | very bad |
Climate in Ho Chi Minh City in september
In september, the mean temperature in Ho Chi Minh City is 85°F (maximum temperature is 90°F and minimum temperature is 81°F). The climate is burning around this city in this month. With 15.6in over 22 days, you may find yourself often in the rain throughout your stay. Consider to pack adapted clothes.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 90°F | ||
| Lowest temperature | 81°F | ||
| Rainfall | 15.6in | ||
| Number of days with rainfall | 22 day(s) (74%) | ||
| Humidity | 90% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 50% | ||
| Length of day | 12:11 | ||
| Our opinion at whereandwhen.net | bad |
Climate in Hoi An in september
In september, maximum temperature is 88°F and minimum temperature is 79°F (for an average temperature of 85°F). The climate is very hot in that area in this month. With 18.4in over 16 days, you will suffer the rain throughout your trip. Consider to bring adapted clothes.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 88°F | ||
| Lowest temperature | 79°F | ||
| Sea temperature | 85°F | ||
| Rainfall | 18.4in | ||
| Number of days with rainfall | 16 day(s) (53%) | ||
| Humidity | 87% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 40% | ||
| Length of day | 12:14 | ||
| Our opinion at whereandwhen.net | tolerable |
All cities in Vietnam in september
See full list of cities (76)Weather data for Vietnam in september:
Weather data for Vietnam in september is derived from an average of the weather forecast since 2009 in Vietnam. There is a margin of error and these forecasts are to be considered as general information only. The weather in Vietnam can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Vietnam.