Hạ Long
September
Weather in Hạ Long for September 2025
Your guide to Hạ Long weather in September - trends and predictions
In general, the average temperature in Hạ Long at the beginning of September is 31.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 27.7 °C by the end of September.
Hạ Long experiences an exceptionally high level of rainfall in September, with more than 24 rainy days on average.
Is September a good time to visit Hạ Long? check out the best time to travel to Hạ Long page.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
5
Dry days
25
Rainy days
0
Snow days
29°/26°
Temperatures
19 km/h
Avg max wind
81 %
Avg humidity
Hạ Long in September average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  31° | 2 31° | 3  31° | 4  32° | 5  34° | 6  35° | 7 29° |
| 8 29° | 9  28° | 10  26° | 11 25° | 12 29° | 13  30° | 14 30° |
| 15 30° | 16 30° | 17 30° | 18 30° | 19 28° | 20 30° | 21 30° |
| 22 26° | 23  28° | 24 23° | 25 27° | 26 28° | 27 29° | 28 29° |
| 29 29° | 30 29° |
You can click on date
Access Hạ Long weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during September in Hạ Long
See the weather trend as well as the moving average line
September weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Patchy light rain with thunder | 31° /27° | 2.9 mm | 7 | |
| 2 Sept. | Patchy light rain with thunder | 31° /27° | 3 mm | 7 | |
| 3 Sept. | Patchy rain possible | 31° /27° | 5.7 mm | 7 | |
| 4 Sept. | Partly cloudy | 32° /27° | 0.6 mm | 8 | |
| 5 Sept. | Patchy light drizzle | 34° /27° | 0.2 mm | 7 | |
| 6 Sept. | Thundery outbreaks possible | 35° /28° | 0.1 mm | 8 | |
| 7 Sept. | Light rain shower | 29° /24° | 193.2 mm | 6 | |
| 8 Sept. | Patchy light rain with thunder | 29° /27° | 39.9 mm | 6 | |
| 9 Sept. | Moderate or heavy rain shower | 28° /26° | 38.4 mm | 6 | |
| 10 Sept. | Torrential rain shower | 26° /24° | 134.8 mm | 6 | |
| 11 Sept. | Torrential rain shower | 25° /24° | 95.8 mm | 6 | |
| 12 Sept. | Light rain shower | 29° /25° | 9.7 mm | 6 | |
| 13 Sept. | Cloudy | 30° /25° | 2.7 mm | 7 | |
| 14 Sept. | Light rain shower | 30° /26° | 2.3 mm | 7 | |
| 15 Sept. | Patchy rain possible | 30° /26° | 1.6 mm | 7 | |
| 16 Sept. | Patchy rain possible | 30° /26° | 6.1 mm | 7 | |
| 17 Sept. | Light rain shower | 30° /26° | 8.3 mm | 7 | |
| 18 Sept. | Moderate or heavy rain shower | 30° /25° | 15.9 mm | 7 | |
| 19 Sept. | Light rain shower | 28° /26° | 4.9 mm | 6 | |
| 20 Sept. | Light rain shower | 30° /26° | 6.6 mm | 7 | |
| 21 Sept. | Light rain shower | 30° /25° | 13.6 mm | 7 | |
| 22 Sept. | Light rain shower | 26° /25° | 39.2 mm | 6 | |
| 23 Sept. | Overcast | 28° /24° | 0 mm | 6 | |
| 24 Sept. | Light drizzle | 23° /21° | 2.3 mm | 5 | |
| 25 Sept. | Patchy rain possible | 27° /23° | 0.1 mm | 6 | |
| 26 Sept. | Patchy rain possible | 28° /24° | 0.1 mm | 6 | |
| 27 Sept. | Light rain shower | 29° /25° | 1 mm | 6 | |
| 28 Sept. | Light rain shower | 29° /27° | 1.7 mm | 6 | |
| 29 Sept. | Light rain shower | 29° /27° | 8.8 mm | 6 | |
| 30 Sept. | Light rain shower | 29° /27° | 8.3 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Hạ Long 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 Hạ Long forecast closer to your planned date for the most up-to-date weather information.
Hạ Long in September - FAQ
What are the expected maximum and minimum temperatures in Hạ Long during September?
During September, expect a variety of temperatures with highs around 29° and lows near 26°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hạ Long during September?
Significant rainfall exceeding 647.8 mm is expected in Hạ Long during September, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Hạ Long during September?
The average wind speed in Hạ Long during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Hạ Long in September?
As you prepare for your trip to Hạ Long 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 Hạ Long, 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
September rainfall patterns in Hạ Long
Explore the daily rainfall trends and prepare for Hạ Longs September weather 💧
UV exposure in Hạ Long during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
You are here
Where is Hạ Long?Get accurate weather forecasts for Hạ Long, located at latitude 20.95 and longitude 107.073. Stay updated with localized weather information tailored for Hạ Long.
Found a mistake?
We appreciate your attention to details. Tell us here.