Halong Bay in September: Weather & climate information
What's the weather like in Halong Bay in September? See the historical monthly averages for temperature, rainfall and humidity.
September Averages
| Min Temperature | 24.8°C | Precipitation | 166.6mm |
| Max Temperature | 30.4°C | Rainy Days | 16.2 days |
| Humidity | 78.5% | Sunshine Hours | 10.8 hours |
Historical weather
September weather averages for Halong Bay in the last 10 years ( 2010 to 2020).
- 2010
- 2011
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
1 25.0°35.0° | 2 27.0°35.0° | 3 27.0°35.0° | 4 27.0°33.0° | 5 26.0°32.0° | 6 26.0°33.0° | |
7 26.0°30.0° | 8 26.0°28.0° | 9 25.0°29.0° | 10 26.0°30.0° | 11 26.0°30.0° | 12 27.0°32.0° | 13 26.0°31.0° |
14 25.0°31.0° | 15 25.0°32.0° | 16 26.0°32.0° | 17 26.0°33.0° | 18 24.0°31.0° | 19 23.0°30.0° | 20 23.0°26.0° |
21 24.0°29.0° | 22 26.0°29.0° | 23 26.0°31.0° | 24 23.0°29.0° | 25 21.0°30.0° | 26 22.0°29.0° | 27 25.0°30.0° |
28 24.0°28.0° | 29 23.0°32.0° | 30 25.0°32.0° |
Temperature Graph (°C)
The average Halong Bay temperature during September is around 27.5°C (81.5°F).
| Month | High | Low | Changes |
| August | 30.8°C (87.44°F) | 25.7°C (78.26°F) | -0.3°C (31.46°F) |
| September* | 30.4°C (86.72°F) | 24.8°C (76.64°F) | -0.7°C (30.74°F) |
| October | 28.0°C (82.4°F) | 21.8°C (71.24°F) | -2.7°C (27.14°F) |
Humidity Graph (%)
The average humidity in September in Halong Bay is 78.5%, which is 2.9% lower than August and 3.4% higher than October.
Rainfall Graph (mm)
Average rainfall in September in Halong Bay: 166.6mm
| August | September* | October |
| 303.2mm (-136.6mm) | 166.6mm | 77.8mm (+88.8mm) |
Rain Days Graph
Average rain days in September in Halong Bay: 16.2 days
Daylight Graph
Average daylight in September in Halong Bay: 12.3h
Frequently asked questions
How is the weather in Halong Bay in September?
September is a hot month in Halong Bay with an average temperature of 27.5°C. Halong Bay's temperature in September ranges between 24.8°C (76.64°F) and 30.4°C (86.72°F).
Is Halong Bay humid in September?
Yes, it is. The humidity of Halong Bay in September is around 78.5% and rarely falls below 57.0%.
Does it rain often in Halong Bay in September?
Yes, it does. It rains very often in Halong Bay in September with an average of 16.2 rainy days and 166.6mm (6.56") of precipitation.
How many hours of daylight are there in September in Halong Bay?
In September, Halong Bay's average day-length is 12.3 hours.
How long is the sun out per day in Halong Bay in September?
The average sunshine hours of Halong Bay in September is 10.8 hours.
