Hanoi weather in September (Ha Noi Municipality, Vietnam)
Looking to travel to Hanoi in September? This guide provides all the weather details you need.
In September, the weather in Hanoi generally has very high temperatures and heavy rainfall. Throughout the daytime, temperatures often hover around 33°C (show in °F). However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 25°C. Bear in mind, these are average temperatures, and it can get even warmer on particular days. Make sure to choose clothing that accommodates the warmth.
Hanoi in September falls under the rainy season with heavy rainfall, averaging around 247 mm (show in inches) for the month. Typically around 14 days of rainfall is expected.
The area experiences a moderate amount of sunshine, with approximately 162 hours of sunlight expected. This makes it neither too gloomy nor overly bright.
If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Hanoi. January, February, March, November and December typically offer the most agreeable weather. On the other hand, May, June, July, August and September tend to be characterized by conditions that may not be as favorable.
For an in-depth look at the yearly weather and climate conditions, visit our specialized Hanoi climate page with graphs.
Hanoi, monthly averages in September
Min Temperature
25.2°C
Max Temperature
32.9°C
Chance of Rain
46%
Precipitation
247 mm
Rainy days
14 days
Humidity
87%
Sunshine
162 hours
Percentage Sunshine
Where to go in Vietnam in September
Find out more about the weather in Vietnam in September and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in Hanoi in September?
It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case. What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in September.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in Hanoi.
Our site offers climate and forecast data for every country in the world. Are you going to Vietnam? On this website you can find historical weather averages for many cities in Vietnam. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.