Hanoi in september: average Weather, Temperature and Climate
Weather in Hanoi in september 2025
The weather in Hanoi in the month of september comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
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%
Evolution of daily average temperature and precipitation in Hanoi in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Hanoi in september.
The climate of Hanoi in september is good
The weather in september in Hanoi is wet (with 8.2in of precipitation over 12 days). The weather is better from the previous month since in august it receives an average of 11.2in of precipitation over 17 days.
The climate is very warm around this city this month. The thermometer averaged maximum of 92°F. In the morning the temperature drops to 79°F. Thus, the mean temperature average in september in Hanoi is 86°F. These temperatures are far removed from those records observed in Hanoi in the month of september with a maximum record of 101°F in 2010 and a minimum record of 68°F in 2011. You can hope to have about 27 days with temperatures over 86°F, or 90 of the month.
Day length in Hanoi in september is 12:16. The sun rises at 05:44 and sets at 18:00.
With a correct climate, this month is okay (but not good) to go in that area.
Seasonal average climate and temperature of Hanoi in september
Check below seasonal norms These datas are generated from the weather statements earlier years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 86°F | ||||
| Highest temperature | 92°F | ||||
| Lowest temperature | 79°F | ||||
| Highest record temperature | 101°F (2010) | ||||
| Lowest record temperature | 68°F (2011) | ||||
| Number of days at +86°F | 27 day(s) (90%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 85°F | ||||
| Lowest sea temperature | 82°F | ||||
| Highest sea temperature | 88°F | ||||
| Wind | |||||
| Wind speed | 11km/h | ||||
| Wind temperature | 79°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 8.2in | ||||
| Number of days with rainfall | 12 day(s) (40%) | ||||
| Record daily rainfall | 3.7in (2020) | ||||
| Other climate data | |||||
| Humidity | 88% | ||||
| Visibility | 8.69km | ||||
| Cloud cover | 44% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:44 | ||||
| Time of sunset | 18:00 | ||||
| Length of day | 12:16 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Hanoi in september 2024:
79°F to 88°F
79°F to 92°F
79°F to 92°F
79°F to 95°F
79°F to 97°F
79°F to 99°F
76°F to 85°F
76°F to 81°F
76°F to 79°F
76°F to 77°F
74°F to 79°F
74°F to 86°F
76°F to 92°F
76°F to 92°F
77°F to 94°F
76°F to 92°F
77°F to 90°F
77°F to 86°F
76°F to 94°F
76°F to 94°F
77°F to 94°F
76°F to 79°F
74°F to 88°F
72°F to 88°F
72°F to 85°F
74°F to 88°F
74°F to 88°F
77°F to 88°F
77°F to 86°F
77°F to 86°F
Map: other cities in Vietnam in september
Cities near Hanoi:
| Viet Tri in september | tolerable weather |
| Thanh Pho Hoa Binh in september | tolerable weather |
| Thanh Pho Thai Nguyen in september | tolerable weather |
| Thanh Pho Ninh Binh in september | good weather |
| Hải Phòng in september | tolerable weather |
| Mai Chau in september | tolerable weather |
| Do Son Beach (Vạn Hương) in september | tolerable weather |
| Halong Bay in september | tolerable weather |
| Cat Ba island in september | tolerable weather |
| Yen Bai in september | tolerable weather |
| Phu Yen in september | tolerable weather |
| Lạng Sơn in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Hanoi
perfect weather
good
tolerable
bad
very bad
Weather data for Hanoi in september:
Weather data for Hanoi for september are derived from an average of the weather forecast since 2009 in Hanoi. There is a margin of error and these forecasts are to be considered as general information only. The weather in Hanoi can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Hanoi.