Hanoi, Vietnam

Hanoi in September

Vietnam Updated 2026-07-01

Heat eases through the month and the light turns golden, though the first days are a national holiday worth planning around.

Is September a good time to visit Hanoi?

September is a middling month in Hanoi — crowds around 62/100. Not the worst, but June is noticeably calmer.

What’s on in September

  • National Day (Sep 2) — ceremonies at Ba Đình Square and a domestic long weekend
  • Mid-Autumn Festival (movable) — Hàng Mã street packed with lanterns

Best days in September

Weekdays are almost always calmer than weekends.

Sun
Mon
Tue
Wed
Thu
Fri
Sat

Tue is normally the calmest day of the week.

Best hours in September

The daily rhythm, hour by hour.

Calmest 9AM
12AM6AM12PM6PM11PM

The 9:00 AM window is usually the calmest of the day.

Weather in September

Typical highs, lows and wet days.

J 20° 15°
F 21° 16°
M 24° 19°
A 28° 22°
M 32° 25°
J 33° 27°
J 33° 27°
A 32° 27°
S 31° 25°
O 29° 23°
N 26° 19°
D 22° 16°
Average high Average low Wet days

How September compares

Every month in Hanoi, ranked by how calm it is.

Quieter alternatives

If your dates are flexible, these months are calmer in Hanoi.

Book things to do

Tours and tickets in Hanoi, from our booking partner.

Affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes a crowd score or the order of our recommendations.

Frequently asked questions

Is September a good month to visit Hanoi?

September is a middling month in Hanoi — crowds around 62/100. Not the worst, but June is noticeably calmer.

How crowded is Hanoi in September?

Hanoi sits at roughly 62/100 in September on our crowd scale, which is 1 points below the yearly average. The quietest month is June.

What is the weather like in Hanoi in September?

Expect highs around 31°C and lows near 25°C in September, with about 13 wet days across the month.

Other months in Hanoi