The climate in Vietnam differs greatly from North to South due to geographical diversity. There are no good or bad seasons for visiting Vietnam. When one region is wet, cold or steamy hot, there is always somewhere else that is sunny and pleasantly warm.

Vietnam stretches over 1,800 square kilometers from north to south with several ranges of mountains. Due to this wide range of latitude and altitude, the weather pattern varies from region to region. In the North, the rainy season is from August until November. Typhoons are sometimes a problem, but quite rare. The North can be quite chilly from December to February.

In Central Vietnam the rainy season is from October until December. Heavy rain and flooding can interrupt travel and Hue, Da Nang and Nha Trang may have to be missed if travelling overland.

The climate in the Mekong Delta is sub-equatorial with two main seasons: wet and dry. The wet season lasts from May to October with short, sharp drenching downpours occurring almost every day. The dry season lasts from November to April.