Hanoi Weather in September

What's the weather like in Hanoi (Ha Nội) in September 2023?

The climate in Hanoi during September can be summarized as very hot, humid and very wet.

September is in the fall / autumn in Hanoi and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (88°F), whilst at night 25°C (77°F) is normal.

Hanoi weather averages (imperial / metric)
Daytime temperature 31.2°C 88.2°F
Nightly temperature 24.8°C 76.6°F
Average temperature 28°C 82.4°F
Daily sunshine 6.3 hrs
Avg rainfall 225 mm 8.8 ins
Rainy days 14 days
Sea temperature 29.2°C 84.6°F
Humidity 83%
Windspeed 5.8kph 4 mph

On average September is the 4th wettest month of the year in Hanoi with around 225mm 8.8 inches of rain making it a very wet time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.3 hours of sunshine per day.

September temperatures in Hanoi

Hanoi average temperature in September

September rainfall

Hanoi average rain in September

September hourly sunshine

Hanoi average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Hanoi in September 2023.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Hanoi weather stats

Hanoi weather statistics
Hottest month: July 33°C 91.4°F
Driest month: December 19mm 0.7ins
Sunniest month: September 6.3hrs
Coldest month: January 19.3°C 66.7°F
Wettest month: August 297mm 11.7ins
Map showing location of Hanoi (21.0245, 105.84117)

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