In these parts, winter starts in November and goes on to February. Without doubt these are the best months for a visit to the North and Northeast - flowers are in bloom, it is dry and cool, and in the mountains' mists and fogs often form making what is already wonderful scenery quite exquisite. However, although hot, April is also a great month - during the Songkran Festival people will most likely throw water at you… You will be drenched so that will keep you cool!