Weather in Hanoi in September
As an Amazon Associate we earn from qualifying purchases. We also earn commission from other retail partners. Links below are affiliate links.
Book now, pay at pickup — compare Hertz, Avis, Budget, Sixt and 800+ rental companies for September in Hanoi.
Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youSeptember in Hanoi is hot, with average highs of 30.7°C and lows of 25.0°C. It is extremely wet, with heavy downpours most days, with roughly 7.6 hours of sunshine a day. It is one of the best months of the year to visit. For the complete picture, see the best time to visit Hanoi — every month compared. Once you know when to go, find your Hanoi packing list at 247PackingList.
Get ready for Hanoi in September
Search flights to Hanoi
Compare 100+ airlines for September — one search, best price.
Search Flights →Travel clothing layers
Pack layers — temperatures can vary significantly between day and night.
Check Price →What to pack for Hanoi in September
- Lightweight, breathable clothing
- High SPF sunscreen
- Sunglasses
- Sun hat
- Reusable water bottle
- Compact travel umbrella
- Waterproof jacket
- Quick-dry clothing
Compare all months in Hanoi
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 21.4°C | 47.0mm | 10/10 |
| February | 22.4°C | 82.4mm | 10/10 |
| March | 26.4°C | 95.2mm | 10/10 |
| April | 27.8°C | 102.2mm | 9/10 |
| May | 32.0°C | 181.6mm | 9/10 |
| June | 33.7°C | 223.2mm | 8/10 |
| July | 33.5°C | 211.0mm | 8/10 |
| August | 31.8°C | 399.9mm | 8/10 |
| September | 30.7°C | 384.7mm | 8/10 |
| October | 27.7°C | 250.0mm | 8/10 |
| November | 26.6°C | 59.7mm | 10/10 |
| December | 21.3°C | 15.5mm | 10/10 |
Full month-by-month guide: best time to visit Hanoi →
For facts about Vietnam — currency, language and dialling code — see our Vietnam country guide at 247CountryInfo. Travellers also find it useful to keep a Hanoi travel guide to hand. Check clothing sizes in Vietnam before you shop.
Frequently Asked Questions
Is September a good time to visit Hanoi?
September rates 8/10 for visiting Hanoi — good time to visit. Expect average highs of 30.7°C, 384.7mm of rain across the month and about 7.6 hours of daily sunshine.
What is the temperature in Hanoi in September?
In September, Hanoi has average highs of 30.7°C (87.3°F) and average lows of 25.0°C (77.0°F).
Does it rain in Hanoi in September?
Yes — September is one of the wetter months in Hanoi, averaging 384.7mm of rain over roughly 23 rainy days. Pack for heavy showers.
What should I wear in Hanoi in September?
For Hanoi in September (30.7°C highs / 25.0°C lows), pack lightweight, breathable clothing plus high spf sunscreen, sunglasses, sun hat.
More essentials for Hanoi in September
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
Check Price →Last updated:
Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.