Laos weather

Our guide to the weather in Laos during September

32

Average high

6

UV Index

375mm

Monthly rainfall

83%

Humidity

We've looked at the most up-to-date weather data for Laos, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Laos weather in September.

How hot is it in Laos during September?

The temperature reaches around 32℃ during the daytime in September, falling away to 23℃ at night. Of course, the high humidity will make it feel even hotter. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Laos during September?

On average, there will be 13 rainy days during the month, amounting to 375.4mm in total. That's a lot of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a good chance that you'll catch a thunderstorm during your trip.

Is it windy in Laos during September?

No - there is very light air movement in September so conditions should be calm with light breezes at times.

Join the club...

Be the first to hear about discounted holidays, flash sales and amazing travel competitions to Laos!

Weather in Laos

Our month-by-month guide to the weather and climate in Laos

29.9

Laos weather in

January
33.0

Laos weather in

February
35.3

Laos weather in

March
36.1

Laos weather in

April
34.4

Laos weather in

May
32.0

Laos weather in

June
30.6

Laos weather in

July
30.6

Laos weather in

August
31.8

Laos weather in

September
31.5

Laos weather in

October
31.4

Laos weather in

November
29.4

Laos weather in

December