Koh Phangan Fruit Seasons: A Month-by-Month Island Guide

The problem with the fruit calendar you'll read elsewhere

Almost every Thai fruit guide is written from Bangkok or Chiang Mai, and almost all of them say the same thing: the rainy season is fruit season. That is true for the country as a whole — Thailand's calendar follows the hot, rainy and cool seasons, with mango and the first durian in the hot months and mangosteen, rambutan and longan through the rains.

The catch is that Koh Phangan's rain does not arrive when the rest of Thailand's does. Our wet months are October to December, on the back of the northeast monsoon, while the southwest monsoon that fills the orchards falls from roughly May to September. So the island's best fruit months are the hot, bright, sweaty ones — and the high season that brings most visitors here, December to February, is the thinnest stretch of the fruit year.

If fruit is part of why you come to the tropics, that is worth knowing before you book.

March to May: mango, and the start of durian

Mango peaks from about February to May. The one to look for is Nam Dok Mai, the slim golden variety used for mango sticky rice; Keo Savoy is the firmer, sourer mango eaten green with salt, sugar and chilli. Buy Nam Dok Mai slightly soft at the stem end and eat it the same day — at 33°C nothing waits.

This is also when the first durian appears, though "first" is relative. Southern durian now runs in two waves, and in 2025 the provincial harvest schedule put the start of the Surat Thani crop at 18 June, with Phang Nga a fortnight earlier and the far southern provinces into late July. Anything sold here in April is early-season fruit at early-season prices.

April and May are good months for pineapple, rose apple, pomelo and lychee, and for marian plum if you like sweet-sour over sweet.

June to August: the good months

This is the stretch to plan around. Mangosteen, rambutan and durian overlap, and they are all cheap because they are all local.

Mangosteen — May to August, sometimes into September. Choose fruit that gives slightly under your thumb; rock-hard means the rind has dried and the flesh will be tough. The purple rind stains cotton permanently, which is why it is banned in a lot of hotel rooms alongside durian.
Rambutan — roughly May to August. Surat Thani is one of the two great rambutan provinces in Thailand; the first trees were planted at Ban Na San, across the bay from us, in 1926, and there is still an annual rambutan fair on the mainland at the end of the season.
Durian — southern peak is July. If you have never eaten it, buy a single pack of cut segments rather than a whole fruit, and eat it outdoors.
Sala and rakam — the brown, scaly, sweet-sour palm fruits, in season from about May to August. Sala is the longer one with more flesh; rakam comes in tighter bunches.
Longkong — the late arrival, coming good from August and running into the autumn. Translucent, grape-like, easy to eat by the handful.

One honest caveat: yields swing hard from year to year. The 2025 southern forecasts had durian up by about 14% while mangosteen, rambutan and longkong were all down, longkong by nearly half after bad weather. In a year like that the fruit is still there, but it is dearer and less good.

September to December: the tail, then the staples

By late September the famous fruits are leaving. Durian can still be found, but it is late-season fruit rather than peak quality. Longkong holds on. Pomelo, papaya, pineapple, banana and coconut carry through, and they carry through every month of the year.

From November the stalls simplify: mango, pineapple, papaya, banana, coconut, dragon fruit, passion fruit — which is at its best from November to April, and is the one genuine gain of the cool season here. Thailand's cool months also produce strawberries and tangerines in the northern highlands, which come down to island supermarkets in December and January, priced accordingly.

If you are here in January and someone offers you mangosteen, it is either imported or cold-stored. It will not taste like June.

Where to buy it

Thong Sala's daily fresh market is the straightforward option — produce, fish, vegetables, fruit, sold to people who live here. Go in the morning; by mid-afternoon the good stalls have thinned. The Saturday walking street has fruit alongside everything else, and the Thong Sala night market is where to get it cut and blended.

Two other habits worth copying from residents. First, pickup trucks park up at the roadside along the main west-coast road during the season, selling one or two things only — a truck bed of rambutan, or durian and nothing else. That is usually the freshest fruit on the island and the cheapest, because it came off the ferry that morning. Second, prices are by the kilo and are rarely displayed. Ask before it goes in the bag; there is no haggling culture at fresh markets, but there is a difference between the local price and the price for someone who did not ask.

Bring a container. Cut fruit is otherwise handed over in a plastic bag, and the island's waste has nowhere to go.

Keeping it in a villa

Two practical notes for anyone self-catering, especially up in the jungle where we are. Ripe fruit on a kitchen counter draws ants within the hour — everything sweet goes in the fridge or in a sealed box. And durian genuinely does perfume a house for a day or more; many hotels here charge cleaning fees for it, and rental cars carry the same signs. At Villa Ullassa we ask guests to eat it on the lower terrace, which is a rule born of one long afternoon and no regrets about the fruit itself.

The short answer, if you are choosing dates: come in June or July for the fruit, accept the humidity and the odd storm, and eat mangosteen twice a day while it lasts. Come in January for the weather, and enjoy the passion fruit.