Koh Samui in Low Season: Why October and November Are Better Than You Think

Koh Samui has a weather pattern that does not match the rest of Thailand, and the result is that a lot of people plan around the wrong months.

The wettest part of the year here is October and November, when much of the country is drying out. This is why Samui feels empty in exactly the weeks Bangkok and Chiang Mai feel busy.

It is also, for a certain kind of visitor, the best time to come.

What the rain is actually like

It arrives in bursts. Heavy, dramatic, and usually over within an hour or two rather than settling in for the day.

A typical low-season day is not grey from morning to night. It is bright, then dark, then a downpour, then bright again, often within the same afternoon. You lose parts of days rather than whole ones.

November is the wettest month. October is close behind. Both carry a real chance of a two- or three-day stretch of genuinely bad weather, and that is the honest risk of coming then.

The sea is rougher on the east and north-east coasts during this period, which is worth knowing if swimming is the point of the trip.

What is good about it

The island empties. Restaurants that need booking a week ahead in January have free tables. The Big Buddha at nine in the morning has nobody on the stairs. Beaches that are crowded in high season are simply not.

Prices drop substantially. Accommodation in particular. The same room can be half what it costs in January.

The light between showers is exceptional. Clean air, dramatic skies, and the bay goes flat and glassy in the calm after rain. Photographers come specifically for this.

Everything is greener. The interior of the island is genuinely lush rather than dusty.

It is cooler. Not cool, but the peak heat of March through May is gone.

Who should come in low season

People working remotely. This is the strongest case. Rain in the afternoon is not a problem when your afternoon was going to be indoors anyway, cafes have free tables, and you are not paying high-season rates for a month. If you have any flexibility about when you spend a working month on Samui, spend it now.

Repeat visitors. If you have already done the beaches and the temples, the empty version of the island is more appealing than the busy one.

Anyone on a budget. The savings are real and they are large.

People who do not need the beach. Food, temples, walking, working, the interior.

Who should not

Anyone whose trip is the beach. If you have one week and swimming is the point, come in the dry season. There is no argument here.

Anyone with rigid plans. Ang Thong marine park normally closes entirely from around the start of November until mid-December, and other boat trips are cancelled more often in this period, and the crossing to Koh Phangan can be uncomfortable.

Honeymoons and one-off special trips. If the weather has to be right, do not gamble on the two wettest months of the year.

What stays open

Most things. Samui is not an island that closes for the season, and the resident population and long-stay expats keep the main areas running year-round.

Some smaller places do close for a few weeks, particularly on the quieter west and south coasts. In Bangrak, Fisherman's Village and Chaweng, expect almost everything to be open with shorter queues.

The rest of the year, briefly

December to February is the dry season and the busiest. Best weather, highest prices, most people.

March to May is the hottest stretch. Dry, and genuinely hot from late morning to late afternoon. Air conditioning stops being optional.

June to September is a second, softer high season with a European summer crowd. Hot, mostly clear, some rain.

October and November are the wet months described above.

Practical low-season advice

Build in indoor time. Not as a fallback but as a plan. A rainy afternoon in a good cafe is a fine afternoon.

Do the outdoor things in the morning. Rain here is more likely in the afternoon and evening than at dawn. Temples, beach walks and boat trips all belong before noon.

Check boat cancellations the night before, not the morning of.

Bring one layer. Evenings after rain are cooler than people expect.

Accept losing a day. It will probably happen once. It is not a disaster and the island is nice to be stuck on.

Where we fit

We run Chillom on the Bangrak beach road, a licensed medical cannabis dispensary with a cafe and lounge attached, open from ten in the morning until two the following morning.

Low season is when the room is at its best. There is space, it is quiet, and a heavy afternoon shower against the bay with somewhere dry to sit is one of the better things about being here in November.

It is also when the working crowd is around, which makes for better company than a room full of people on a one-week holiday.