Lang Son in September: Weather & climate information
What's the weather like in Lang Son in September? See the historical monthly averages for temperature, rainfall and humidity.
September Averages
In September, Lang Son experiences warm temperatures ranging from 21.7°C to 29.9°C, with high humidity at 81.5%. Expect about 16 rainy days and an average of 10.8 sunshine hours.| Min Temperature | 21.7°C | Precipitation | 118.0mm |
| Max Temperature | 29.9°C | Rainy Days | 16.3 days |
| Humidity | 81.5% | Sunshine Hours | 10.8 hours |
Historical weather
September weather averages for Lang Son in the last 14 years ( 2010 to 2024).
September
2017
- 2010
- 2011
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
1 24.0°33.0° | 2 24.0°32.0° | 3 25.0°33.0° | ||||
4 25.0°33.0° | 5 25.0°32.0° | 6 25.0°32.0° | 7 25.0°31.0° | 8 24.0°32.0° | 9 24.0°31.0° | 10 24.0°32.0° |
11 24.0°31.0° | 12 24.0°29.0° | 13 23.0°31.0° | 14 23.0°31.0° | 15 24.0°29.0° | 16 23.0°29.0° | 17 23.0°33.0° |
18 24.0°34.0° | 19 24.0°33.0° | 20 25.0°32.0° | 21 24.0°31.0° | 22 24.0°31.0° | 23 24.0°32.0° | 24 24.0°33.0° |
25 24.0°27.0° | 26 24.0°32.0° | 27 24.0°33.0° | 28 24.0°34.0° | 29 24.0°30.0° | 30 24.0°31.0° |
Temperature Graph (°C)
The average Lang Son temperature during September is around 25.6°C (78.08°F).
| Month | High | Low | Changes |
| August | 30.8°C (87.44°F) | 22.9°C (73.22°F) | -0.5°C (31.1°F) |
| September* | 29.9°C (85.82°F) | 21.7°C (71.06°F) | -1.1°C (30.02°F) |
| October | 26.9°C (80.42°F) | 18.3°C (64.94°F) | -3.3°C (26.06°F) |
Humidity Graph (%)
The average humidity in September in Lang Son is 81.5%, which is 1.8% lower than August and 3.4% higher than October.
Rainfall Graph (mm)
Average rainfall in September in Lang Son: 118.0mm
| August | September* | October |
| 224.4mm (-106.4mm) | 118.0mm | 63.4mm (+54.6mm) |
Rain Days Graph
Average rain days in September in Lang Son: 16.3 days
Daylight Graph
Average daylight in September in Lang Son: 12.3h
Frequently asked questions
How is the weather in Lang Son in September?
September in Lang Son tends to be warm, with an average temperature of 25.6°C. Expect temperatures to range from 21.7°C (71.1°F) to 29.9°C (85.8°F).
Is Lang Son humid in September?
Yes, Lang Son is humid in September, with humidity levels averaging around 81.5% and rarely dropping below 57.0%.
Does it rain often in Lang Son in September?
Yes, it does. In September, Lang Son experiences approximately 16.3 rainy days and receives around 118.0mm (4.65") of rainfall, making it a wet month.
How many hours of daylight are there in September in Lang Son?
In September, Lang Son enjoys an average of 12.3 hours of daylight each day.
How long is the sun out per day in Lang Son in September?
The average daily sunshine in Lang Son during September is approximately 10.8 hours.
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