Weather in Thailand
For everyone who would like to visit Thailand and wonder about when should be the perfect time. I hope this might help. (But nowadays the weather is changed by Global warming, take this blog as an info then when you come here please recheck again.) Welcome to Thailand, and hope you enjoy my country! 
Thailand has determined by 3 seasons;
Summer, Rainy and Winter
but I think more than 10 years now that we don’t know what winter is.
When there’s no topic about global warming; Thailand is always hot and humid for the majority of the country during most of the year. Only in March 2011 that the temperature has decreased to 18c. It was really impossible to happen in Thailand but happened. It was colder than a season that we called “winter”. Although we know that it isn’t a good sign but we love that.
In Bangkok,
Jan – March = Summer.
March – June = Summer (the temperature used to reach 40c) and sometimes Rainy.
July – October = Rainy, hot and humid as it’s a monsoon season.
November – February = Beginning of winter but normally it’s hot and dry until late December to early January in the north of Thailand.
Note:
A) Always; If today is too hot and dry, tonight or tomorrow will rain hard.
B) April: It’s always the hottest month across the country.
C) Bangkok is always hotter than north or northeast of Thailand.
The beach
* Beaches on Andaman coast: Most of the islands are closed from May to October because of the rainy season and monsoon. Some provinces have the beach like Krabi, Phuket, Pang-nga are free to visit all the year but just be careful a bit when it’s raining or during monsoon season. Recheck again before you go.
* Beaches on Thai Gulf: Best time to visit is from February to October. Sometimes it rains in May to October but sometimes the weather is good. In November and December –> Monsoon season.
The Mountain (North of Bangkok to North of Thailand)
* Best time to visit is around November to January. December is high season because you will have the real winter season there.
Hope this help. Enjoy travelling in Thailand!
