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When is the Rainy Season in Thailand?

The rainy season in Thailand varies from region to region and is largely dominated by the monsoon. Very broadly speaking, Thailand’s rainy season can be classified as May/June to October. For most of Thailand, the wettest months are usually August-October. However, the Gulf Coast of the southern peninsula (e.g. Ko Samui, Ko Pha Ngan) is affected by the south-west monsoon which can lead to heavy rainfall in November and the beginning of December.

Don’t be put off by the thought of visiting Thailand during the rainy season. Yes, the rain can be torrential, but the weather is still very warm and the downpours are often short and sharp. Bargains can be had with accommodation and the tourist areas are less crowded.

Average
Rainfall mm
BangkokChiang MaiKo SamuiPattayaPhuket
Jan1181441942
Feb286331430
Mar3115515260
Apr72458667157
May190153158177345
Jun1521369379286
Jul15816713177284
Aug18722710691272
Sep320251113202417
Oct231132266249351
Nov5744526134188
Dec915213471

Statistics from Thai Meteorological Department

Month by month guide to Thailand

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About Roy Cavanagh

Roy Cavanagh is a former stand-up comedian who now works as a freelance writer and website designer. Passionate about Thailand and Thai culture, Roy is also the editor of the online magazine, Fan Club Thailand.

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About Thaizer

Thank you for your interest in Thaizer. My name is Roy Cavanagh and I’ve been fortunate enough to live in Thailand and travel to every region of the country over a number of years. Thaizer.com is where I share my knowledge and experience with you. Just like any destination, Thailand has its good points and its bad points and I try to offer honest and practical advice.

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