Laos weather in September

Planning a getaway to Laos this September and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What is the weather like in Laos in September?

September in Laos generally has temperatures that range from warm to very warm, with heavy precipitation.

During the day the temperature is warm in Muang Phônsavan at 28°C and very warm in Vientiane at 33°C. As night falls, temperatures generally drop to 25°C in Vientiane and 19°C in Muang Phônsavan. The temperatures mentioned for both day and night are typical averages. However some days might get even hotter. It's best to stay prepared by wearing cloths suitable for the warmth.

In September, precipitation varies across different areas. From heavy rainfall in Ban Vanglè with an average of 199 mm to heavy rainfall in Ban Gnik with 456 mm. The city Luang Prabang usually sees around 166 hours of sunlight, indicating a moderately sunny period.

For a closer look at September's conditions in Laos, see the map below. For a more detailed look at Laos's yearly weather, check out our Laos climate page.

Where to go in Laos in September

Find the average weather conditions in September for the most popular destinations in Laos on the map below. Click on a destination dot for more detailed information.

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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°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in Laos

What is the weather like in September for the 5 most popular destinations in Laos?

Average weather in Luang Prabang

In September Luang Prabang generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 22°C and heavy monthly rainfall. So on average the conditions are poor that month.

Luang Prabang
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
23°C 
131 hours 
312 mm 
25 days 
poor 
30°C 
22°C 
166 hours 
206 mm 
18 days 
poor 
October   >> October
>>  
30°C 
20°C 
181 hours 
83 mm 
11 days 
Climate in Luang Prabang

Average weather in Vientiane

In September Vientiane generally has very high temperatures with maximum daytime temperatures around 33°C, minimum nighttime temperatures around 25°C and heavy monthly rainfall. So on average the conditions are poor that month.

Vientiane
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
33°C 
25°C 
135 hours 
400 mm 
24 days 
poor 
33°C 
25°C 
168 hours 
309 mm 
20 days 
poor 
October   >> October
>>  
33°C 
24°C 
211 hours 
105 mm 
10 days 
Climate in Vientiane

Average weather in Vang Vieng

In September Vang Vieng generally has high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 22°C and heavy monthly rainfall. So on average the conditions are poor that month.

Vang Vieng
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
29°C 
23°C 
552 mm 
25 days 
poor 
30°C 
22°C 
343 mm 
19 days 
poor 
October   >> October
>>  
30°C 
21°C 
132 mm 
10 days 
Climate in Vang Vieng

Average weather in Pakse

In September Pakse generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 24°C and heavy monthly rainfall. So on average the conditions are poor that month.

Pakse
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
31°C 
24°C 
128 hours 
436 mm 
28 days 
poor 
31°C 
24°C 
143 hours 
364 mm 
19 days 
poor 
October   >> October
>>  
31°C 
23°C 
190 hours 
178 mm 
14 days 
Climate in Pakse

Average weather in Savannakhet

In September Savannakhet generally has very high temperatures with maximum daytime temperatures around 32°C, minimum nighttime temperatures around 24°C and heavy monthly rainfall. So on average the conditions are poor that month.

Savannakhet
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
32°C 
25°C 
308 mm 
23 days 
poor 
32°C 
24°C 
275 mm 
18 days 
poor 
October   >> October
>>  
32°C 
23°C 
113 mm 
9 days 
Climate in Savannakhet

Is your destination not in the list? Have a look at other destinations in Laos.

Is September the best time to visit Laos?

In our opinion, September may not be the ideal time to visit Laos due to the typically poor weather in Luang Prabang.

Generally speaking, January, February, November and December provide perfect weather in Luang Prabang. The weather in June, July, August and September, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in Laos. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Laos? Get detailed 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.