When to go · Vientiane
Vientiane in September
Avoid month. Listed as a month to avoid: Mar–May (very hot, often 38–40°C, seasonal haze) and Jul–Sep (Mekong flooding, heavy rain).
Key facts
- Verdict
- Avoid
- Crowds
- Low
- Laos overall
- Prices
- Low
- Laos overall
Verdict
AvoidBest and avoid months for Vientiane
Listed as a month to avoid: Mar–May (very hot, often 38–40°C, seasonal haze) and Jul–Sep (Mekong flooding, heavy rain).
Weather in September
- Centre, Laos · Vientiane, Vang Vieng, Thakhekrainy
Dry and pleasant Nov–Feb; April tops 37 °C; the Thakhek Loop is hard in the rains.
Crowds and prices
- Crowds · Laos overall
- Low
- Prices · Laos overall
- Low
Laos overall: Floods along the Mekong in some years; Kuang Si pools brown and fast.
What to pack
- A rain jacket or umbrella and shoes that dry fast