A Vietnam weather guide
Three climates. Two windows that work everywhere.
Vietnam stretches 1,600 km north to south and has three distinct weather zones. 'Best time' depends on where you're going. For a full north-to-south trip, these are the two reliable windows.
Geography is destiny
1,600 km of coastline crosses three distinct weather systems. A guide that says 'best time to visit Vietnam' without naming a region isn't telling you anything useful.
Bands from the published Day Trips Vietnam guide. For specific °C / mm figures, see NCHMF (Vietnam's National Center for Hydro-Meteorological Forecasting).
The whole year, one grid
Read across the row for one region; read down a column for one month. The two outlined columns are the windows where every region is good at the same time.
Day Trips Vietnam — qualitative bands from the published guide. For specific temperature / rainfall data, refer to NCHMF (Vietnam's National Center for Hydro-Meteorological Forecasting).
Festivals & travel-impact dates
Weather is half the picture. The other half is when locals are travelling. These are the dates that shape availability, transport and price across 2026.
When NOT to visit
No blanket "don't go." Vietnam is worth visiting in any month — but for a first trip, these three windows are the ones to schedule around rather than into.
Typhoon season. Hoi An's Old Town has flooded in multiple recent years; transport disruption along the central coast is routine. If beaches are the goal, schedule them for the south or wait until after late November. Hue, Da Nang, Hoi An all affected.
Hanoi can hit 10°C, grey and damp. Sapa occasionally snows — beautiful for some, miserable if you weren't expecting cold-weather city travel. Ha Long Bay loses much of its photogenic clarity. Pack for layers, or skip and go south.
Most family-run businesses close 5–7 days. Domestic transport books out; hotel and flight prices spike. Beautiful for atmosphere — temple visits at midnight, kumquat trees on every corner — but frustrating without planning. Decide which side of it you want to be on, and book early.
Picking the right window
If you only take one thing from this guide: these are the two months either side of the year when a north-to-south Vietnam trip works without compromise. Pick whichever fits your calendar.
All three regions warm and dry. The most reliable window of the year. Book Phu Quoc and Hoi An accommodation 4+ weeks ahead — these are also the most-booked international months, and inventory tightens fast.
Best overallNorth at its best. Centre still dry before the typhoons arrive. Mid-October is the cut-off — after that, Hoi An flood risk climbs sharply and the central coast becomes a gamble.
Mid-Oct cut-off"Three climates. Two windows that work everywhere — March–April and September–October."