Vientiane in September
Not the best time
The tail end of monsoon season with gradually improving conditions. Still wet and humid, but you can start planning outdoor activities with less risk of total washouts.
Weather
The rains start to ease slightly but humidity remains crushingly high. Afternoon thunderstorms are still common but less intense than July and August. Muggy conditions persist throughout.
32°C high24°C low16 rain days
Crowds & Cost
low crowds
~$30/day average
Events & Festivals
- •Boun Ok Pansa (end of Buddhist Lent)
- •Boat Racing Festival preparations
September Tips
- •Weather is slightly more predictable for planning
- •End of Buddhist Lent brings more temple activity
- •Still need waterproof gear for sudden showers
All Months
November through March gives you the best weather. Days hit 25-30°C, nights cool down to 15-20°C, and rain stays away. December and January are perfect — clear skies, comfortable temperatures, and the Mekong runs low enough to reveal sandy beaches.
April and May bring serious heat. Temperatures push past 35°C, and the air gets heavy before the rains start. But crowds disappear and prices drop. If you can handle the heat, you'll have temples mostly to yourself.
Rainy season runs June through October. It doesn't rain all day, but when it does, streets flood quickly. The upside? Everything turns green, the air clears, and accommodation costs hit rock bottom. Just pack good rain gear and flexible plans.
Vientiane Scores
Solo
8/10
Couples
6/10
Families
6/10
Adventure
5/10
Budget
9/10
Luxury
4/10
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