Vientiane weather in September 2021

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32
32°C max day temperature
5
5 hours of sunshine per day
20
20 days with some rainfall
24
24°C min night temperature
12
12 hours of daylight per day
VH
Very High heat & humidity
278
278 mm of monthly rainfall
11
11+ (Extreme) UV index

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The September weather guide for Vientiane, Laos shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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How hot is it in Vientiane in September?

Daytime temperatures usually reach 32°C in Vientiane in September with very high heat and humidity, falling to 24°C at night.

How sunny is it in Vientiane in September?

There are normally 5 hours of bright sunshine each day in Vientiane in September - that's 42% of daylight hours.

Does it rain in Vientiane in September?

There are usually 20 days with some rain in Vientiane in September and the average monthly rainfall is 278mm.

What is the chance of a typhoon in Vientiane in September?

On average 1.2 days in September in Vientiane are likely to be affected by the passage of one or more tropical storms.

Metric (°C / mm) | Imperial (°F / inches)

Vientiane sunrise & sunset times for September 2021

Browse the sunrise & sunset times for Vientiane in September 2021. Select a month to view Vientiane sunrise & sunset times for the next twelve months.

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