Vientiane weather in September (Vientiane, Laos)

This month is known as a warm month. The average maximum daytime temperature in Vientiane in September lies at 31.3°C (88.34°F). The average minimum temperature goes down to around 24.6°C (76.28°F) (often the minimum temperature is noted at night).

September is part of the rainy season with an average precipitation of 254mm (10.0 inches). There are generally around 18 rainy days. The sun will show itself now and again, with 168 hours of sunshine during the entire month.

 

Vientiane, monthly averages in September

Show in Fahrenheit

Min Temperature 24 °C  

Max Temperature 31 °C  

Chance of Rain 60%  

Precipitation 254mm  

Rainy days 18 days  

Humidity 83% *  

Sunshine 168 hrs *  

Where to stay in Vientiane

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Where to go in Laos in September

Find out more about the weather in Laos in September and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

So what to wear in September? Visitors traveling to Vientiane should plan on bringing a totally waterproof coat since it will often be raining. However, also bring your summer cloths because it can be very warm or even hot.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Vientiane.

Our site offers climate and forecast data for every country in the world. Are you going to Laos? On this website you can find historical weather averages for many cities in Laos. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.