Hoi An
September
Weather in Hoi An for September 2025
Your guide to Hoi An weather in September - trends and predictions
In general, the average temperature in Hoi An at the beginning of September is 31.4 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 28.9 °C by the end of September.
Hoi An experiences an exceptionally high level of rainfall in September, with more than 20 rainy days on average.
Is September a good time to visit Hoi An? check out the best time to travel to Hoi An page.
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8
Dry days
22
Rainy days
0
Snow days
30°/25°
Temperatures
15 km/h
Avg max wind
80 %
Avg humidity
Hoi An in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  32° | 2 32° | 3 32° | 4  31° | 5 31° | 6 30° | 7 32° |
| 8 32° | 9 32° | 10  31° | 11 31° | 12 30° | 13  31° | 14 29° |
| 15 30° | 16 29° | 17 29° | 18 29° | 19 28° | 20 30° | 21 30° |
| 22 28° | 23 27° | 24 28° | 25  27° | 26 29° | 27 29° | 28 30° |
| 29 29° | 30 30° |
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Temperatures trend during September in Hoi An
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. | Partly cloudy | 32° /25° | 0.4 mm | 8 | |
| 2 Sept. | Partly cloudy | 32° /24° | 0.3 mm | 8 | |
| 3 Sept. | Partly cloudy | 32° /25° | 5.3 mm | 8 | |
| 4 Sept. | Light rain shower | 31° /24° | 16.7 mm | 7 | |
| 5 Sept. | Light rain shower | 31° /25° | 8.7 mm | 7 | |
| 6 Sept. | Light rain shower | 30° /25° | 13 mm | 7 | |
| 7 Sept. | Light rain shower | 32° /25° | 4.6 mm | 8 | |
| 8 Sept. | Light rain shower | 32° /25° | 4.1 mm | 8 | |
| 9 Sept. | Patchy rain possible | 32° /25° | 6.5 mm | 7 | |
| 10 Sept. | Moderate or heavy rain shower | 31° /24° | 14.3 mm | 7 | |
| 11 Sept. | Patchy rain possible | 31° /25° | 5 mm | 7 | |
| 12 Sept. | Partly cloudy | 30° /25° | 3.2 mm | 8 | |
| 13 Sept. | Cloudy | 31° /24° | 9.5 mm | 7 | |
| 14 Sept. | Cloudy | 29° /24° | 7.1 mm | 7 | |
| 15 Sept. | Cloudy | 30° /24° | 6.2 mm | 7 | |
| 16 Sept. | Light rain shower | 29° /25° | 7.1 mm | 7 | |
| 17 Sept. | Light rain shower | 29° /24° | 9.4 mm | 6 | |
| 18 Sept. | Patchy rain possible | 29° /24° | 11.5 mm | 7 | |
| 19 Sept. | Patchy rain possible | 28° /23° | 123.6 mm | 7 | |
| 20 Sept. | Patchy rain possible | 30° /24° | 1.2 mm | 7 | |
| 21 Sept. | Patchy rain possible | 30° /25° | 6.8 mm | 7 | |
| 22 Sept. | Patchy rain possible | 28° /23° | 12.2 mm | 7 | |
| 23 Sept. | Patchy rain possible | 27° /23° | 12.7 mm | 6 | |
| 24 Sept. | Light rain shower | 28° /24° | 12.8 mm | 6 | |
| 25 Sept. | Torrential rain shower | 27° /23° | 47.7 mm | 6 | |
| 26 Sept. | Light rain shower | 29° /23° | 2.1 mm | 6 | |
| 27 Sept. | Light rain shower | 29° /24° | 5.5 mm | 7 | |
| 28 Sept. | Patchy rain possible | 30° /24° | 5.5 mm | 7 | |
| 29 Sept. | Patchy rain possible | 29° /24° | 5.7 mm | 7 | |
| 30 Sept. | Patchy rain possible | 30° /24° | 6 mm | 7 | |
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Important Notice
Our weather forecast for Hoi An 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 Hoi An forecast closer to your planned date for the most up-to-date weather information.
Hoi An in September - FAQ
What are the expected maximum and minimum temperatures in Hoi An during September?
During September, expect a variety of temperatures with highs around 30° and lows near 25°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hoi An during September?
Significant rainfall exceeding 271.4 mm is expected in Hoi An during September, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Hoi An during September?
The average wind speed in Hoi An during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Hoi An in September?
As you prepare for your trip to Hoi An 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 Hoi An, 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 Hoi An
Explore the daily rainfall trends and prepare for Hoi Ans September weather 💧
UV exposure in Hoi An during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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