Hanoi weather in September
Hot and humid, with frequent heavy rain. Average highs of 31°C and lows of 25°C, with around 21 rainy days expected throughout the month.
While September isn't our top-rated month for Hanoi, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
31°C
Average low
25°C
Rainy days
21 days
Best months to visit
February, March, April, November, December
What to do in Hanoi in September
Whatever the weather, Hanoi rewards curious visitors. Here are some of the best ways to spend your time:
Old Quarter streets
Hoan Kiem Lake
Ho Chi Minh Mausoleum
Pho breakfast
Water puppet theatre
Ha Long Bay overnight cruise
What to pack for September
Light breathable clothing, high-SPF sunscreen, a wide-brimmed hat, and a reusable water bottle are essential. Pack sandals and at least one light layer for air-conditioned interiors.
Browse other months
January
21C
Mild and comfortable, with some rainy days.
Recommended
February
22C
Mild and comfortable, with occasional showers.
Recommended
March
25C
Warm and pleasant, with some rainy days.
Recommended
April
28C
Warm and pleasant, with some rainy days.
May
32C
Hot and humid, with regular rainfall.
June
33C
Hot and humid, with regular rainfall.
July
33C
Hot and humid, with frequent heavy rain.
August
32C
Hot and humid, with frequent heavy rain.
September (you are here)
31C
Hot and humid, with frequent heavy rain.
October
28C
Warm and pleasant, with some rainy days.
Recommended
November
26C
Warm and pleasant, with occasional showers.
Recommended
December
21C
Mild and comfortable, with occasional showers.
Book your September trip to Hanoi
Find hotels, tours and experiences for the perfect escape.
