Vietnam’s weather is dictated by two monsoons, meaning double trouble on the rain front. The winter monsoon comes from the northeast between October and March, bringing damp and chilly winters to all areas north of Nha Trang, and dry and warm temperatures to the south. From April or May to October, the summer monsoon brings hot, humid weather to the whole country except for those areas sheltered by mountains. 

 Vietnamese take little notice of bad weather. Nothing stops for rain (though you might want to sometimes--road conditions are still pretty poor in some places and travel by bus or motorbike can be extremely dangerous in wet conditions).

Visitors head to Hanoi during all different times of the year, but the most busy tourist season is during the summer months.  This is interesting, because it is generally also considered to be the time of the worst weather in Hanoi.  It is not only hot,