Need more info about budget and what kind of things you like doing! As far as weather is concerned... well it'll be hot, that's for sure. There is usually less rain on the Gulf side at that time of year so if you're looking for a beach, consider Ko Phangan, Ko Tao or Samui ....

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“Not all those who wander are lost.” Tolkien.
Life is not measured by the number of breaths we take, but by the moments that take our breath away.