Thailand is largely tropical, so it’s hot and humid all year around with temperatures in the 28-35°C range (82-95°F), a degree of relief provided only in the mountains in the far north of Thailand.
The most suitable season for your vacation and long holiday will be high season which is during November till April. You can find very gorgeous scenery in every part of Thailand, especially sea sand and sun. You will learn how the nature draw crystal clear ocean in the middle of white exquisite beach and blue sky. You will fall in love with the sunshine which shining on the sea face on the day time and reflection of the moon light at night.
In the other hand, during the low season around you can spend time among the scenery embowering by a colorful of florae.