Hanoi
September
Weather in Hanoi for September 2025
Your guide to Hanoi weather in September - trends and predictions
In general, the average temperature in Hanoi at the beginning of September is 33 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 30.3 °C by the end of September.
Hanoi experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 305.6 mm.
Is September a good time to visit Hanoi? check out the best time to travel to Hanoi page.
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Temperatures
Rain 🌧️
More
0
Dry days
30
Rainy days
0
Snow days
31°/24°
Temperatures
12 km/h
Avg max wind
80 %
Avg humidity
Hanoi in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  33° | 2  33° | 3  33° | 4 31° | 5 34° | 6 35° | 7 32° |
| 8 30° | 9 30° | 10  30° | 11  31° | 12 32° | 13 30° | 14 30° |
| 15 32° | 16 31° | 17 31° | 18 31° | 19  33° | 20 31° | 21 33° |
| 22 30° | 23 32° | 24 30° | 25 29° | 26 30° | 27 30° | 28 31° |
| 29 31° | 30 31° |
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Temperatures trend during September in Hanoi
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Moderate or heavy rain shower | 33° /25° | 4.3 mm | 7 | |
| 2 Sept. | Heavy rain at times | 33° /25° | 2.2 mm | 8 | |
| 3 Sept. | Patchy rain possible | 33° /25° | 1.3 mm | 7 | |
| 4 Sept. | Heavy rain at times | 31° /24° | 4.6 mm | 7 | |
| 5 Sept. | Moderate or heavy rain shower | 34° /24° | 3.6 mm | 8 | |
| 6 Sept. | Moderate rain at times | 35° /24° | 2.2 mm | 8 | |
| 7 Sept. | Light rain shower | 32° /24° | 20 mm | 7 | |
| 8 Sept. | Moderate or heavy rain shower | 30° /24° | 22.3 mm | 7 | |
| 9 Sept. | Moderate rain at times | 30° /24° | 14.4 mm | 7 | |
| 10 Sept. | Partly cloudy | 30° /24° | 16.1 mm | 7 | |
| 11 Sept. | Sunny | 31° /24° | 17.1 mm | 7 | |
| 12 Sept. | Sunny | 32° /24° | 17.5 mm | 7 | |
| 13 Sept. | Moderate or heavy rain shower | 30° /23° | 32.2 mm | 7 | |
| 14 Sept. | Patchy rain possible | 30° /24° | 6 mm | 7 | |
| 15 Sept. | Moderate or heavy rain shower | 32° /24° | 5.7 mm | 7 | |
| 16 Sept. | Moderate or heavy rain shower | 31° /24° | 15.7 mm | 7 | |
| 17 Sept. | Moderate or heavy rain shower | 31° /24° | 15.6 mm | 7 | |
| 18 Sept. | Light rain shower | 31° /23° | 7.8 mm | 7 | |
| 19 Sept. | Overcast | 33° /24° | 4.3 mm | 7 | |
| 20 Sept. | Light rain shower | 31° /24° | 7.5 mm | 7 | |
| 21 Sept. | Light rain shower | 33° /24° | 9 mm | 7 | |
| 22 Sept. | Moderate or heavy rain shower | 30° /24° | 11.5 mm | 6 | |
| 23 Sept. | Moderate or heavy rain shower | 32° /23° | 4.2 mm | 7 | |
| 24 Sept. | Patchy rain possible | 30° /23° | 6.2 mm | 7 | |
| 25 Sept. | Moderate or heavy rain shower | 29° /23° | 8.2 mm | 6 | |
| 26 Sept. | Patchy rain possible | 30° /23° | 4.2 mm | 7 | |
| 27 Sept. | Patchy rain possible | 30° /23° | 5 mm | 7 | |
| 28 Sept. | Partly cloudy | 31° /23° | 10.9 mm | 7 | |
| 29 Sept. | Partly cloudy | 31° /24° | 13 mm | 7 | |
| 30 Sept. | Moderate or heavy rain shower | 31° /23° | 12.8 mm | 7 | |
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Important Notice
Our weather forecast for Hanoi in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Hanoi forecast closer to your planned date for the most up-to-date weather information.
Hanoi in September - FAQ
What are the expected maximum and minimum temperatures in Hanoi during September?
During September, expect a variety of temperatures with highs around 31° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hanoi during September?
Significant rainfall exceeding 305.6 mm is expected in Hanoi during September, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Hanoi during September?
The average wind speed in Hanoi during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Hanoi in September?
As you prepare for your trip to Hanoi in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Hanoi, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
- Insect Repellent: For destinations with mosquitos or other insects
September rainfall patterns in Hanoi
Explore the daily rainfall trends and prepare for Hanois September weather 💧
UV exposure in Hanoi during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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