There are no good or bad seasons to visit Vietnam. When one region is wet, cold or steamy hot, there is always somewhere else that is sunny and pleasant. Basically, the south has two seasons: the wet (May to November, wettest from June to Aug+ust) and the dry (December to April). The hottest and most humid time is from the end of February to May. The central coast is dry from May to October and wet from December to February. The highland areas are significantly cooler than the lowlands, and temperatures can get down to freezing in winter. The north has two seasons: cool, damp winters (November to April) and hot summers (May to October). There is the possibility of typhoons between July and November, affecting the north and central areas.
Travellers should take the Tet New Year festival (late January or early February) into account when planning a trip. Travel (including international travel) becomes very difficult, hotels are full and many services close down for at least a week and possibly a lot longer.
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