Hoi An in September: Weather & climate information
IN A NUTSHELL
- In September, temperatures typically start to decline slightly.
- However, the month often sees an increase in rainfall, with more frequent heavy showers contributing to higher precipitation levels.
This month marks the onset of the rainy season in Hoi An, with humidity rising to approximately 82%. While temperatures remain warm, they have slightly decreased to just below 30°C. Visitors should prepare for occasional showers, which bring a refreshing change to the region's tropical climate.
September Averages
September in Hoi An features a warm climate with temperatures ranging from 24.5°C to 29.7°C. Expect 18 rainy days and high humidity at 82.3%, alongside about 10.6 hours of sunshine daily.| 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 14 years ( 2010 to 2024).
September
2010
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- 2011
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
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- 2023
- 2024
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
1 No data | 2 No data | 3 No data | 4 No data | 5 No data | 6 No data | |
7 No data | 8 No data | 9 No data | 10 No data | 11 No data | 12 No data | 13 No data |
14 No data | 15 No data | 16 No data | 17 No data | 18 No data | 19 No data | 20 No data |
21 No data | 22 No data | 23 No data | 24 No data | 25 No data | 26 No data | 27 No data |
28 No data | 29 No data | 30 No data |
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 in Hoi An is warm, with an average temperature of 27.7°C. Daily temperatures typically range from 24.5°C (76.1°F) to 29.7°C (85.5°F), making it a lovely time to explore the area.
Is Hoi An humid in September?
Yes, Hoi An is quite humid in September, with humidity averaging about 82.3% and rarely dropping below 69.0%.
Does it rain often in Hoi An in September?
Yes, September sees frequent rainfall in Hoi An, with an average of 18.1 rainy days and approximately 154.6mm (6.09") of precipitation.
How many hours of daylight are there in September in Hoi An?
In September, Hoi An enjoys an average of 12.2 hours of daylight, providing ample time to explore the city's beauty.
How long is the sun out per day in Hoi An in September?
The average daily sunshine in Hoi An during September is about 10.6 hours, offering plenty of time to enjoy the beautiful weather.
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