Hoi An in September: Weather & climate information
- Temperatures in September witness a marginal downward trend.
- By contrast, heavy showers appear more frequently and consequently, there is a considerable amount of precipitation.
This month marks the return of rain season in Hoi An with the upward trend of humidity to around 82%. Temperature is still at the high level, but slightly down to be below 30°C.
September Averages
| Min Temperature | 24.5°C | Precipitation | 154.6mm |
| Max Temperature | 29.7°C | Rainy Days | 18.1 days |
| Humidity | 82.3% | Sunshine Hours | 10.6 hours |
Historical weather
September weather averages for Hoi An 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 27.0°34.0° | 2 26.0°33.0° | 3 26.0°32.0° | 4 26.0°33.0° | |||
5 26.0°30.0° | 6 25.0°32.0° | 7 25.0°31.0° | 8 25.0°32.0° | 9 25.0°32.0° | 10 26.0°32.0° | 11 26.0°31.0° |
12 25.0°29.0° | 13 25.0°30.0° | 14 25.0°31.0° | 15 25.0°31.0° | 16 25.0°31.0° | 17 25.0°30.0° | 18 25.0°30.0° |
19 25.0°29.0° | 20 25.0°29.0° | 21 25.0°28.0° | 22 25.0°26.0° | 23 24.0°28.0° | 24 24.0°28.0° | 25 24.0°29.0° |
26 24.0°29.0° | 27 24.0°30.0° | 28 25.0°31.0° | 29 25.0°31.0° | 30 25.0°29.0° |
Temperature Graph (°C)
The average Hoi An temperature during September is around 27.7°C (81.86°F).
| Month | High | Low | Changes |
| August | 31.0°C (87.8°F) | 24.9°C (76.82°F) | 0.0°C (0°F) |
| September* | 29.7°C (85.46°F) | 24.5°C (76.1°F) | -0.8°C (30.56°F) |
| October | 27.1°C (80.78°F) | 22.9°C (73.22°F) | -2.1°C (28.22°F) |
Humidity Graph (%)
The average humidity in September in Hoi An is 82.3%, which is 2.6% higher than August and 2.9% lower than October.
Rainfall Graph (mm)
Average rainfall in September in Hoi An: 154.6mm
| August | September* | October |
| 126.9mm (+27.7mm) | 154.6mm | 350.1mm (-195.5mm) |
Rain Days Graph
Average rain days in September in Hoi An: 18.1 days
Daylight Graph
Average daylight in September in Hoi An: 12.2h
Frequently asked questions
How is the weather in Hoi An in September?
September is a hot month in Hoi An with an average temperature of 27.7°C. Hoi An's temperature in September ranges between 24.5°C (76.1°F) and 29.7°C (85.46°F).
Is Hoi An humid in September?
Yes, it is. The humidity of Hoi An in September is around 82.3% and rarely falls below 69.0%.
Does it rain often in Hoi An in September?
Yes, it does. It rains very often in Hoi An in September with an average of 18.1 rainy days and 154.6mm (6.09") of precipitation.
How many hours of daylight are there in September in Hoi An?
In September, Hoi An's average day-length is 12.2 hours.
How long is the sun out per day in Hoi An in September?
The average sunshine hours of Hoi An in September is 10.6 hours.
