Weather in Hanoi in September
September in Hanoi is a hot month. Plan the serious walking for morning. The rest of the day wants shade and a slower pace.
In Vietnam, this is how Hanoi actually wears September, not how a country centroid would. Compared with June and January, September sits in the middle of Hanoi's year.
- Average temp
- 29°C
26–32°C
- Rainfall
- 179 mm
A wet month
- Sunshine
- 5.6 h
hours per day
What to expect
Daytime
Hot days in Hanoi. Ruins, markets and hills are a morning job. Midday sightseeing is how people remember September for the wrong reason.
Nights stay warm. Air-con, if you can get it, is part of the brief. A jumper for September in Hanoi is almost always a waste of bag space.
Rain
September is a wetter month in Hanoi. Showers are part of the deal, not a spoiled surprise.
Waterproof shoes matter more than a rain plan for a beach, especially if a beach is not why you came. Build indoor hours into the afternoon.
Evening
Evenings stay warm.
What to pack
Sun protection
Rain jacket
Where to stay in Hanoi
Dates are a starting point for September.
Travel guides for Hanoi
What to read before you book.
Average weather in Hanoi
TemperatureRainfall
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FAQs about Hanoi
Climate averages for Hanoi, 1991–2020.
The best time to visit Hanoi is between November and April, the most comfortable stretch of the year on these averages.
June is the hottest month, with an average around 31°C.
July is the wettest month, with about 311 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
