The climate varies greatly from north to south.
The north has a cold and wet season from November to April and a hot
season from May to October. The central coast north of Nha Trang has a
similar climate with the winter monsoon bringing cool, wet weather
between December and February. The south is hot and humid all year
round, especially from February to May. The rainy season lasts from May
to November. Travel in the south is most pleasant between November and
February, avoiding the heat and the rain. The central highlands has a
similar climate to the south, but it is cooler and temperatures can be
freezing in winter. The official peak season in Vietnam is from
September to April.