The weather in Thailand comprising the northern areas of the country has distinct seasonal variations. The weather in Thailand north region is predominantly dry between November and May. This long period could be broken up into two periods like November to February and March to May.
The period between March and May has higher relative temperatures. The monsoon season dominates the weather in Thailand northern regions from May to November. Heavy rainfall is characteristic of the Thailand climate in this part of the year. The southern peninsular region has two seasons. The two seasons are the hot season and the dry season. Monsoon rain in this region falls from April to October.
Detailed information about weather in Thailand is provided in the following links:

