2026 Climate Averages

Weather: Hanoi — September

It's a rainy period, but great for indoor activities, museums, and lower prices.

☔ Climate Overview

September is a wet time to visit Hanoi. Hot conditions with temperatures reaching 32°C—stay hydrated and seek shade. This is one of the wettest months—waterproof gear is essential. Being off-peak, you'll find better deals and fewer crowds.

5.9
GoTripzi Score Good

Based on weather comfort, crowds, prices, and activity options

Avg High

32°C

Avg Low

26°C

Rainy days

22days

Daylight

12.3h

Feels like 38°C / 31°C — humidity makes it feel warmer

Rainfall

358mm

Sunshine

7.1h/day

Humidity

84%

Very Muggy
Sun Strength

5.6

High
Wind

11 km/h (gusts 26)

Is September a good time to visit Hanoi?

It's a rainy period, but great for indoor activities, museums, and lower prices.

Now

--

Feels like --
Wind --
Humidity --
UV Index --
Local time —

Air Quality

Travel Context

  • Crowds
    Quiet
  • Travel Costs Shoulder Rates

Daylight

Sunrise

05:44

Sunset

18:01

12.3h daylight

Visiting Hanoi in September: Pros & Cons

Pros

  • Fewer crowds and better hotel deals

Cons

  • Frequent rain may disrupt outdoor activities
  • High humidity makes the heat feel oppressive

Things to Do in September

Events & Festivals

🎊
National Day
September 2 Holiday
🎭
Mid-Autumn Festival
September/October Cultural

Recommended for This Weather

🌅 Early morning sightseeing (before the heat)
🏛️ Museums & galleries
🍳 Cooking classes & food tours
🎭 Cultural tours & local experiences

Hanoi Weather by Month

Month Avg High Avg Low Rain Sunshine Humidity UV Index Crowds Condition
Jan 21°C 15°C 8d (45mm) 5h
76% Humid
3.6 Moderate
Good
Feb 22°C 16°C 10d (56mm) 3.7h
81% Very Humid
3.4 Moderate
Good
Mar 26°C 20°C 9d (68mm) 4.5h
82% Very Humid
4.4 Moderate
Excellent
Apr 29°C 22°C 11d (96mm) 6.8h
82% Very Muggy
5.9 High
Excellent
May 32°C 25°C 17d (241mm) 8.3h
81% Very Muggy
6.8 High
Wet
Jun 34°C 28°C 17d (221mm) 8.4h
78% Muggy
7.2 Very High
Wet
Jul 34°C 27°C 20d (209mm) 8.9h
80% Very Muggy
7.3 Very High
Wet
Aug 33°C 27°C 24d (318mm) 7.6h
83% Very Muggy
6.3 High
Wet
Sep Current 32°C 26°C 22d (358mm) 7.1h
84% Very Muggy
5.6 High
Wet
Oct 29°C 23°C 13d (204mm) 7.2h
78% Muggy
5.3 High
Excellent
Nov 27°C 20°C 6d (47mm) 7.3h
77% Humid
4.7 Moderate
Excellent
Dec 22°C 16°C 4d (18mm) 5.9h
73% Humid
3.9 Moderate
Good

⚖️Find Your Ideal Month

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Your Best MonthJanScore: 7.9
1.Jan
7.92.Jun
7.63.Jul
7.64.Dec
7.45.Aug
7.26.May
7.17.Feb
78.Sep
6.69.Mar
5.210.Nov
5.211.Apr
4.712.Oct
4.7

Where to Stay

See hotels, apartments & rentals around Hanoi – live prices from Booking.com, Expedia, Vrbo and more

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Hanoi

Hanoi: Old Quarter chaos and street-food alleys, tranquil Hoan Kiem Lake, French-colonial charm, and an easy springboard to Ha Long Bay.

View Full Destination Guide

What to Pack for September

Light, breathable fabrics like cotton and linen are essential. Opt for loose-fitting clothing in light colors to stay cool. A waterproof jacket and shoes are non-negotiable — showers are frequent.

Warm Quiet

🎒Personalized Packing List

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📋Essentials
👕Clothing
👟Footwear
🎒Accessories
🧴Toiletries & Health

Planning a trip to Hanoi?

💰 Off-peak — great deals available now

Frequently Asked Questions

Is September a good time to visit Hanoi?
September is typically wet for visiting Hanoi, with average highs of 32°C and around 22 rainy days. Plan your activities accordingly—outdoor sightseeing is best on dry days, while rainy days are perfect for museums and indoor attractions.
Does it get cold at night in Hanoi in September?
Nights stay pleasantly warm in Hanoi during September, around 26°C. Light evening wear is sufficient, and outdoor dining is very comfortable. Many locals and visitors enjoy late-night walks and outdoor activities after sunset.
What should I pack for Hanoi in September?
With highs of 32°C and lows of 26°C in September, we recommend: Compact umbrella, Waterproof jacket/shell, Water-resistant shoes, Lightweight breathable clothes. Layering is key as temperatures can vary between air-conditioned interiors and outdoors. Comfortable walking shoes are essential for cobblestone streets.
Does it rain a lot in Hanoi in September?
Hanoi typically sees around 22 rainy days in September. Rain is usually in the form of brief showers rather than all-day downpours, so a compact umbrella is sufficient. Mornings tend to be drier, making them ideal for outdoor sightseeing.
How many hours of daylight are there in Hanoi in September?
In September, Hanoi gets approximately 12.3 hours of daylight per day. This affects how much sightseeing you can fit in—longer days mean more time for outdoor activities, while shorter days are perfect for cozy museum visits and early dinners.
Is September peak season in Hanoi?
No, September is not peak season in Hanoi. Expect better value on accommodation, shorter queues at attractions, and fewer tourists at popular spots. This is an excellent time to experience the city like a local and enjoy a more authentic atmosphere.

Weather Data: Based on 2020–2025 historical climate data from Open-Meteo

Solar calculations: SunCalc (timezone: Asia/Bangkok)

Last Updated: February 2026

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