2025 Koh Samui events

Ready to make some plans? Below, the 2025 Koh Samui events calendar is ready for anyone clever enough to plan things in advance (and always here for those of us who will show up and hope for the best). Are you more of a last-minute sort? You're in luck – Koh Samui is often a last-minute kind of place. Below, you'll find annual Koh Samui events, holidays, festivals and 2025 Full Moon Party dates (on nearby Koh Phangan). I update this calendar regularly as new or last-minute events are announced so make sure you don't miss email updates. Enjoy!

Koh Samui questions?

Ready to get going and don't want to miss a minute? For cocktail spots, sunset drinks and every-which-way to make merry, The Koh Samui Guide has every scrap of my 20 years' Samui expertise inside. (Yep, you're got you covered for hangover brunches, too). Most of all, you'll arrive prepared with crucial packing and safety tips – ready to roll.

Key Events:

• Koh Samui Songkran
• Christmas on Koh Samui
• New Year's Eve

Jump to month:

• January
• February
• ‍March
• April
• May
• June
• July
• August
• September
• October
• November
• December

January 2025

• 01 New Year's Day
• 11 Children's Day (Thailand)
• 26 Australia Day 2025 Extravanganza
• 29 Chinese New Year

February 2025

• 07 An Art(ful) Elephant Auction
• 12 Makha Bucha Day (Buddhist holy day)
• 13 Full Moon Party (Koh Phangan)
• 14 Valentine's Day
• 16 White Lotus Koh Samui premieres
• 23 Samui Green Market
• 24 Hyzenbrownie Open Challenge (disc golf)
• 28 Samui Latin Festival (through March 2)

March 2025

• 08 International Women's Day Celebration
• 13 Full Moon Party (Koh Phangan)
• 21 Samui Open Beach Volleyball Tournament (through March 23)

April 2025

• 06 Chakri Day (Thai national holiday)
• 07 Chakri Day (observed)
• 12 Full Moon Party (Koh Phangan)
• 13 Songkran (Thai New Year, through April 15)

May 2025

• 01 Labour Day
• 04 Coronation Day
• 05 Coronation Day observed
• 11 Visakha Bucha Day (Buddhist holy day)
• 12 Visakha Bucha Day (observed)
• 12 Full Moon Party (Koh Phangan)
• 24 Samui Regatta (through May 31)

June 2025

• 02 Public holiday
• 03 H.M. Queen's Birthday
• 10 Full Moon Party (Koh Phangan)

July 2025

• 10 Asana Bucha Day (Buddhist holy day)
• 12 Full Moon Party (Koh Phangan)
• 28 H.M. King's Birthday

August 2025

• 09 Full Moon Party (Koh Phangan)
• 12 Mother's Day (Thailand)
• 12 H.M. Queen Mother's Birthday‍

September 2025

• 07 Full Moon Party (Koh Phangan)

October 2025

• 08 Full Moon Party (Koh Phangan)
• 13 Anniversary of His Majesty the Late King Bhumibol
• Tip: Rainy season on Koh Samui (usually) begins in late October/early November

November 2025

• 05 Full Moon Party (Koh Phangan)
• 05 Loy Krathong

December 2025

• 05 Full Moon Party (Koh Phangan)
• 25 Christmas
• 31 New Year's Eve

More questions?

• Shop: The Koh Samui Guide
• FAQs: How to get around?
• Hotels: 21 Private Pool Villas on Koh Samui