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Hanoi weather in September (Ha Noi Municipality, Vietnam)

Looking to travel to Hanoi in September? This guide provides all the details you need.

Temperatures

In September, Hanoi generally has very high temperatures and heavy rainfall. Throughout the daytime, temperatures often hover around 33°C. 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.

Precipitation

Hanoi in September falls under the rainy season with heavy rainfall, averaging around 247 mm for the month. Typically around 14 days of rainfall is expected.

Average sunshine

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 circumstances. On the other hand, May, June, July, August and September tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Hanoi climate page with graphs.

 

Hanoi, monthly averages in September

Min TemperatureMin Temperature 25°C  
Max TemperatureMax Temperature 33°C  
Chance of RainChance of Rain 46%  
PrecipitationPrecipitation 247 mm  
Rainy daysRainy days 14 days  
HumidityHumidity 87%  
SunshineSunshine 162 hours  
Percentage SunshinePercentage Sunshine  

Where to go in Vietnam in September

Find out more about the weather in Vietnam and which places have the best travel conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

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.

Swimming
7/10
Cycling
7/10
Walking
7/10
Camping
7/10
Outdoor sports
7/10

Interested in more climate information?

This site 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 travel conditions. Find out where to go with our weather planner.