Hanoi
September
Weather in Hanoi for September 2026
Your guide to Hanoi weather in September - trends and predictions
Until now, September 2026 in Hanoi has been nearly identical to the historical average, with a temperature of 33.7 °C (showing only a slight deviation of 0.4 °C).
The forecast for the next days in Hanoi predicts a temperature of 27.5 °C, which is cooler than the historical average.
In general, the average temperature in Hanoi at the beginning of September is 33.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 30 °C by the end of September.
Hanoi experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 325.8 mm.
Temperatures
Rain 🌧️
8
Dry days
22
Rainy days
0
Snow days
31°/24°
Temperatures
13 km/h
Avg max wind
80 %
Avg humidity
Hanoi Weather September
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Temperatures trend during September in Hanoi
See the weather trend as well as the moving average line
September weather in Hanoi day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Moderate or heavy rain shower | 33° /24° | 5.2 mm | 7 | |
| 2 Sept. |  Patchy rain possible | 34° /24° | 1.5 mm | 8 | |
| 3 Sept. | Patchy rain possible | 33° /25° | 0.9 mm | 8 | |
| 4 Sept. |  Heavy rain at times | 32° /24° | 3.1 mm | 7 | |
| 5 Sept. | Patchy rain possible | 33° /24° | 2.5 mm | 7 | |
| 6 Sept. | Moderate rain at times | 35° /24° | 1.7 mm | 7 | |
| 7 Sept. | Light rain shower | 33° /24° | 14.1 mm | 8 | |
| 8 Sept. | Moderate or heavy rain shower | 31° /24° | 17.9 mm | 7 | |
| 9 Sept. | Light rain shower | 33° /25° | 21.9 mm | 8.2 | |
| 10 Sept. | Patchy rain possible | 31° /24° | 27.5 mm | 4.3 | |
| 11 Sept. |  Sunny | 31° /23° | 7.6 mm | 10 | |
| 12 Sept. |  Smoky haze | 31° /23° | 0 mm | 10.9 | |
| 13 Sept. | Light rain shower | 25° /21° | 12.7 mm | 5 | |
| 14 Sept. | Light rain shower | 23° /21° | 17.5 mm | 5 | |
| 15 Sept. | Light rain shower | 22° /21° | 52 mm | 5 | |
| 16 Sept. | Patchy rain possible | 28° /22° | 2.9 mm | 6 | |
| 17 Sept. |  Overcast | 31° /21° | 8.3 mm | 7 | |
| 18 Sept. | Light rain shower | 21° /20° | 14.5 mm | 5 | |
| 19 Sept. | Light rain shower | 22° /20° | 116.1 mm | 5 | |
| 20 Sept. | Patchy rain possible | 30° /22° | 0.8 mm | 7 | |
| 21 Sept. | Light rain shower | 30° /24° | 10.3 mm | 6 | |
| 22 Sept. | Moderate or heavy rain shower | 30° /24° | 11.8 mm | 6 | |
| 23 Sept. | Patchy rain possible | 32° /23° | 4.3 mm | 7 | |
| 24 Sept. | Patchy rain possible | 30° /23° | 5 mm | 7 | |
| 25 Sept. | Moderate or heavy rain shower | 28° /23° | 18.6 mm | 6 | |
| 26 Sept. | Light rain shower | 30° /22° | 5.4 mm | 6 | |
| 27 Sept. | Light rain shower | 30° /23° | 9 mm | 6 | |
| 28 Sept. | Light rain shower | 31° /23° | 14.7 mm | 7 | |
| 29 Sept. | Moderate or heavy rain shower | 30° /23° | 28.9 mm | 7 | |
| 30 Sept. | Light rain shower | 31° /23° | 16.6 mm | 7 | |
| Next | |||||
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.
Change Month
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 325.8 mm is expected in Hanoi during September, occurring over more than 22 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 13 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Hanoi
Explore the daily rainfall trends and prepare for Hanois September weather 💧
Typically, Hanoi has 22 rainy days in September with a total of 325.8 mm of rainfall.
UV exposure in Hanoi during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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