The wet season is from around May thru October, same as other Southeast Asian countries, and characterised by a downpour for a few hours each day rather than all-day torrential downpours. The wet season tends to hit Phongsali a little early due to it catching a bit of rain from southern China, while Hua Phan and Xieng Khuang tend to get a little early rain from Vietnam. August is the wettest month.
The dry season has two distinct sub-sections: first comes the cool dry season and then comes the hot dry season. The former is one of the most popular times to visit Laos, the later less so. The cool dry season runs from November to February and the hot dry season from March to April.
November to February are cooler while March and April are blisteringly hot. April is the hottest month.
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Vientiane
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| Month | Rainfall (mm) |
Temperature (Celsius)
|
||||
|---|---|---|---|---|---|---|
| Average monthly | Ave no of days with 1mm |
Average daily
|
Lowest recorded | Highest recorded | ||
| min | max | |||||
| Jan | 5 | 14 | 28 | |||
| Feb | 15 | 17 | 30 | |||
| Mar | 38 | 19 | 33 | |||
| Apr | 99 | 23 | 34 | |||
| May | 261 | 23 | 32 | |||
| Jun | 302 | 24 | 32 | |||
| Jul | 267 | 24 | 31 | |||
| Aug | 293 | 24 | 31 | |||
| Sep | 302 | 24 | 31 | |||
| Oct | 110 | 21 | 31 | |||
| Nov | 15 | 18 | 29 | |||
| Dec | 3 | 16 | 28 | |||
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Luang Prabang
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| Month | Rainfall (mm) |
Temperature (Celsius)
|
||||
|---|---|---|---|---|---|---|
| Average monthly | Ave no of days with 1mm |
Average daily
|
Lowest recorded | Highest recorded | ||
| min | max | |||||
| Jan | 2 | 13 | 32 | |||
| Feb | 2 | 14 | 33 | |||
| Mar | 4 | 17 | 34 | |||
| Apr | 8 | 21 | 34 | |||
| May | 13 | 23 | 33 | |||
| Jun | 12 | 23 | 32 | |||
| Jul | 17 | 23 | 31 | |||
| Aug | 19 | 23 | 32 | |||
| Sep | 12 | 23 | 31 | |||
| Oct | 7 | 21 | 31 | |||
| Nov | 3 | 18 | 30 | |||
| Dec | 1 | 15 | 31 | |||
