Thailand Guide
Weather
The climate of most of Thailand is governed by three seasons: rainy (roughly June– Oct), caused by the southwest monsoon; cool (Nov– Feb); and hot (March– May). The cool season is the most pleasant time to visit and the most popular; during the hot season, temperatures can rise to 40°C. The rainy season hits the Andaman coast (Phuket, Krabi, Phi Phi) harder than anywhere else in the country – heavy rainfall usually starts in May and persists until November. The Gulf coast (Ko Samui, Ko Pha Ngan and Ko Tao) gets much less rain from the southwest monsoon, but is also affected by the northeast monsoon, which brings rain between October and January.