Thailand is a splendid place to visit year-round. Many tourists visit Thailand even in the off-season. But you need to make sure of the weather conditions before making any plans. The most effective time to go to Thailand is from November until early April. This can be once the heavens aren't any longer running and therefore the sky clears up. This time is exotic and excellent for an outing at the beach or for exploring various heritage sites.
The Peak season commences from November and lasts until February. This is the winter season but winters aren't as chilly as in other countries. The highest temperature usually ranges from 23-30 degrees which is pretty decent to travel. The Ocean at this point is quite calm and peaceful. Around this time Thailand is mostly flogged with tourists as this is an ideal time to stretch under the sweltering sun with ocean waves running high.
The Shoulder season commences from March to mid-May. These are probably the hottest months with humidity increasing rapidly. The scorching heat could become intolerable but the best part is you could get cheap deals around this time as people avoid visiting Phuket due to the monsoon that is round the corner. One of the main attractions in April is the Songkran Festival, Thai New Year.
The Worst Time to visit Phuket is from Mid-May to October are usually the hottest months. The heat is intolerable. The monsoon season commences from July and lasts until three months. So, this time must be avoided at all costs.