Vang Vieng weather, live
Right now in the valley: 22°C, overcast, 90% humidity. The seven-day strip below updates itself every hour — and the seasonal guide underneath tells you what the sky does in every month.
What the sky does, month by month
November–February: the prime window — 15–25°C days, cold nights in the north-facing guesthouses, air so clear the karst looks painted. Balloon flights at their most reliable; book the train early, everyone had this idea.
March–mid April: the honest warning — burning-season haze plus 35–40°C afternoons. The valley is still beautiful and the crowds thin, but this is the one season we won't oversell to you.
May–October: the green season. One dramatic afternoon downpour most days, mornings bright, the valley at its lushest and rooms at their cheapest. August is the wettest; the lagoons run emerald instead of neon blue.
Planning around the sky: whatever the season, the rule is the same — viewpoints and lagoons in the morning, caves and cafés for the wet or hot hours, the river at dusk. The 2–3 day plan is already built that way.