By the end of June the "wet" season officially begins, with the onset of the S.W. monsoon. However the actual week or month depends on the monsoons in any given year. In KhaoLak temperatures are warm throughout the year, with only slight variations in highs and lows.

November - March The most popular time to visit is from November through to March, when the temperature and humidity are slightly lower. At this time there is a comfortable cooler breeze, with generally clear blue skies and very calm seas. Temperatures typically reach 32C and drop to 24C at night.

April-May The hottest months are April and May with temperatures ranging from 27C upto 36C. There can be short heavy thundery showers, which actually provide a welcome relief from the temperature and humidity.

June-August June, July and early August are slightly less hot ( 24C to 33C ) with generally fine weather and plenty of sunshine between brief heavy downpours.By the end of August, through to October inclusive, the wet monsoon sets in more noticeably, but, even then, there are still long sunny intervals between the heavy showers.

September September is the wettest month. Beaches are slightly windswept and less picturesque looking, and some water-based activities are restricted (eg. visits to the Surin and Similan islands). Nonetheless, KhaoLak is very enjoyable at any time of the year with a wide range of attractions and excursions.