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Koh Samui Weather

Koh Samui’s weather mainly features two seasons – sunny and rainy. The island’s typical sultry climate and year-round warm water are favourable for your next beach vacation. However, the best time to visit Koh Samui is without a doubt from the months of December through to June.

You can always visit Koh Samui during the off-season, however, there can be slight chances of heavy rain that may lead to possible torrential storms.

Koh Samui Weather 7 Day Temperature Forecast, Averages & Climate

The weather in Koh Samui can sometimes become unbearably hot; due to the island’s temperate climate, the humid per cent is always high. The weather forecast averages around 26 degrees from December to February, however, if you go during March through June, the temperature can reach up to 46 degrees. Although there will be plenty of sunshine, you may notice a little rain as well, even during this period.


The rainy season in Samui is mainly from October through November. During these wetter months, you’ll see considerable rainfall in Koh Samui, with storms and flooding on occasions. Even during the rainy season, the climate is hot and tropical; however, it is advisable to avoid the wet season if possible.

During the month of April, Koh Samui celebrates the Thai New Year of Songkran. On this day, you’ll see colourful parades and festivals on this island. In addition, the residents of Koh Samui also celebrate an array of music beach and local traditional festivals during these drier months.

About the author

Michael Jones

Michael created and runs the Koh Samui Travel Hub website, as well as the Holiday Point travel brand that incorporates a network of 16 location based travel information and attraction websites around Australia, Asia, and around the world.

With 25+ years of online experience and a passion for travel (having visited Koh Samui many times), Michael not only researches and writes content for the website, he also tinkers behind the scenes with the website functionality & design.

Please reach out if you have any questions or suggestions.


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    • Hi Elsa,

      There are no scheduled times or dates that I am aware of. Sometimes it is difficult to pinpoint the date and time of the buffalo fighting; however, these fights usually take place at the many stadiums around Koh Samui in the evenings.

      Typical of the small island culture, emails and phone numbers to find out this sort of information are not readily available. You are best to ask at your place of accommodation, as locals tend to have up to date information on where and when the fights will be scheduled.

      As for price, this is variable depending on the stadium. Plan for between 100-200 Baht – however this is not set in stone.

      You may find regular fights occurring along the North Coast (Bang Po Beach, Ban Tai) at Bang Makham.

      Best regards,

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