Koh Samui in December: Weather, What to Expect and December FAQs


Getting excited about your December Koh Samui trip? Ready to eat? And eat and eat?

In recent years, flights to Koh Samui in December have been increasingly hard to come by. This suggests a very merry month on the island. Here’s exactly what to expect on Koh Samui this December, plus what to pack at this time of year, weather details, things to do and more. Enjoy!

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Koh Samui in December

Koh Samui in December: Weather, What to Expect and December FAQs
Koh Samui’s Laem Sor Beach in December

What to pack for Samui in December?

The best mosquito repellent for Koh Samui in December

My favourite mosquito repellent: Incognito Anti-Mosquito Spray

If you’re going to forget anything in your pre-departure frenzy, let it be a small blonde child named Kevin and not your mosquito repellent. Given Koh Samui’s high humidity in December (as rainy season wanes) – mosquitoes get very greedy for their Christmas dinner. The repellent above is top amongst my tried-and-tested favourites for completely avoiding mosquito bites in Thailand. It’s DEET-free and totally natural. For more mozzie-avoidance tips – here’s everything I know.


Packing lists and dress code advice

Koh Samui in December: Weather, What to Expect and December FAQs
A stormy New Year’s Eve on Chaweng Noi Beach

It’s a hectic time of year, but packing is the final step before nothing but gluttony and lazy days. For a massive head-start, see:

Where to stay on Koh Samui in December?

Koh Samui in December: Weather, What to Expect and December FAQs
SALA Samui Resort Choeng Mon Beach in December

If you’re lucky, your long list of things to do this month (between Christmas shopping, sending cards, dressing your dog in reindeer antlers…) will include packing for Koh Samui. From celebratory meals to afternoon adventures and fantastic shopping, The Koh Samui Guide will help you to plan your entire trip.

Compelling reasons to be decisive

Koh Samui in December: Weather, What to Expect and December FAQs
Laem Sor Beach, Koh Samui in December

The December holiday period is peak-peak-peak season on Koh Samui. Villas tend to book out months in advance, and many resorts require a seven-night minimum. As such, if you’re booking last minute and find availability at somewhere you think looks nice – book it. It won’t be there when you return after “thinking about it”. By October, many resorts only have availability in their most expensive room categories. (But a 176 m² villa with a private pool doesn’t sound like the worst news, right?)

For a quick-start on finding somewhere to stay last-minute, see my recommendations for where to stay on Koh Samui.

Views vs beachfront accommodation

Koh Samui in December: Weather, What to Expect and December FAQs
The Tongsai Bay in December

Prioritise good views over beach access. December is the tail-end of Koh Samui’s rainy season and perfect blue-sky weather isn’t guaranteed. The ocean can be rough and, on many beaches, the tide comes up quite high at this time of year. As such, you might favour properties with ocean views over beachfront accommodation. This way you get to enjoy the ocean in any weather, without paying premium prices for a beach you might not be able to use every day.

Example hotel rates (December 25, 2019)

Rates from Booking.com

Koh Samui December weather

Koh Samui in December: Weather, What to Expect and December FAQs
A sunny but windy December day on Koh Samui’s Laem Sor Beach

The good news: Rainy season (should be) over! In later December we officially say goodbye to Koh Samui’s rainy season and celebrate the re-opening of Angthong Marine Park (typically December 23rd).

Does it rain on Koh Samui in December?

Koh Samui in December: Weather, What to Expect and December FAQs
A wet December day on Koh Samui

Yes. But I’ll sugar-coat it. You’re far likelier to see heavy, consistent rain in early December than towards the Christmas/New Year period. In fact, the chance of rain in a day falls by half from Dec 1 to Dec 31. December is by no means the hottest point of the year, nor the sunniest, but the tropics have a fairly liberal rain policy year-round.

Your rainy day contingency plan

Koh Samui in December: Weather, What to Expect and December FAQs
The Jungle Club on a rainy Christmas Day

Given the likelihood of seeing some rain in December, I really recommend bringing some fun stuff to bust out on rainy days. Especially if you’re coming with kids (or men-children). Whether games, books – even colouring books – it’s great to bring back-up for anyone in your group who gets bored easily. And then whinges about it. More games for them = more uninterrupted cocktail time for you.

Should you spot rain on the forecast, don’t worry. Thailand has fantastic rainstorms; enjoy them best with a good book or a family travel game (and a Singha or coconut shake sourced nearby).


December 2019: Christmas and New Year

Koh Samui in December: Weather, What to Expect and December FAQs
December on Choeng Mon Beach

Christmas on Koh Samui

If you’re coming to Koh Samui for Christmas, rest assured: just about every restaurant on the island will have a Christmas dinner of some description (at every price point). If you have your heart set on a table with a particular view, do book as early as possible! While Christmas is very much an adopted holiday in Thailand, the decorations are nothing short of delightful.

New Year’s Eve

Plan to celebrate New Year on Koh Samui? Expect to repeat much the same as above (an enjoyable process), hopefully with yet more champagne and a lot of fireworks.


Things to do on Koh Samui in December?

Koh Samui in December: Weather, What to Expect and December FAQs
A beautiful December day on Plai Laem Beach

Lazy days indeed. In no particular order, my favourite things to do on Samui in December are:

On Koh Samui, I like a mixture of about 20% scheduled activities to 80% “let’s see what happens today”. If it involves something alcoholic happening in a coconut, so much the better.

Activities to book now

Koh Samui in December: Weather, What to Expect and December FAQs
Find favourite spas and ways to relax in The Koh Samui Guide

If you’ve already read The Koh Samui Guide and have some particular activities on your must-do list: book them now! Spas, restaurants and popular classes book out through the Christmas/New Year period. There’s no First World Problem like calling for a massage and being told: “you can come in three days’ time”.

Now – Let’s plan the good stuff!

Get instant access to Koh Samui with The Koh Samui Guide, your total travel guide for Koh Samui, Thailand

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From celebrations to island adventures, use The Koh Samui Guide to plan your entire trip. Happy travels, and Merry Christmas!

Weather data c/o World Weather

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