SeasonMapWhat's on in Ko Chang (Koh Chang), Thailand through the year
Ko Chang, Thailand has 5 curated events through the year — 1 festival, 1 natural spectacle, 1 holiday and 2 seasons. The ones to plan around: High season on the island (November) and Wreck and reef diving season (November). January, April and December are its peak-crowd months.
Updated September 2026 · every event curated and sourced · dates for 2026 where they are announced, the usual window where they are not
Best time to visit Ko Chang (Koh Chang): weather, crowds and notes →
Ko Chang (Koh Chang) events and crowds by month
| Month | What starts | Crowds |
|---|---|---|
| January | — | Peak crowds |
| February | — | Busy |
| March | — | Busy |
| April | Songkran | Peak crowds |
| May | Low-season shutdown | Busy |
| June | — | Shoulder season |
| July | — | Quiet |
| August | — | Shoulder season |
| September | — | Quiet |
| October | — | Busy |
| November | High season on the island, Wreck and reef diving season | Busy |
| December | Christmas and New Year peak | Peak crowds |
January in Ko Chang (Koh Chang)
Ko Chang (Koh Chang) weather in January →Peak crowds — High season on the island, Christmas and New Year peak
Nothing new starts in January.
Still on: High season on the island (1 Nov – 30 Apr (usually)), Wreck and reef diving season (1 Nov – 30 Apr (usually)), Christmas and New Year peak (18 Dec – 5 Jan)
February in Ko Chang (Koh Chang)
Ko Chang (Koh Chang) weather in February →Busy — High season on the island, school holidays in 2 of the markets that fill it
Nothing new starts in February.
Still on: High season on the island (1 Nov – 30 Apr (usually)), Wreck and reef diving season (1 Nov – 30 Apr (usually))
March in Ko Chang (Koh Chang)
Ko Chang (Koh Chang) weather in March →Busy — High season on the island, school holidays in 2 of the markets that fill it
Nothing new starts in March.
Still on: High season on the island (1 Nov – 30 Apr (usually)), Wreck and reef diving season (1 Nov – 30 Apr (usually))
April in Ko Chang (Koh Chang)
Ko Chang (Koh Chang) weather in April →Peak crowds — Songkran, High season on the island
- Festival
Songkran
13–15 AprWater-festival New YearCrowdedBook earlyThe last big weekend before the island winds down — Thai groups down from Bangkok, water on the beach road, and the ferries at capacity both ways. Source ↗
Still on: High season on the island (1 Nov – 30 Apr (usually)), Wreck and reef diving season (1 Nov – 30 Apr (usually))
May in Ko Chang (Koh Chang)
Ko Chang (Koh Chang) weather in May →Busy — Long summer break in Thailand, school holidays in 2 of the markets that fill it
- Season
Low-season shutdown
15 May – 15 Oct · usuallyOff-season shutdownClosuresSwell on the west coast, half the resorts and most of the dive shops closed, and the beach bars boarded up. What stays open is cheap and quiet, and the waterfalls are running.
June in Ko Chang (Koh Chang)
Ko Chang (Koh Chang) weather in June →Shoulder season — school holidays in 3 of the markets that fill it, an ordinary month
Nothing new starts in June.
Still on: Low-season shutdown (15 May – 15 Oct (usually))
July in Ko Chang (Koh Chang)
Ko Chang (Koh Chang) weather in July →Quiet — school holidays in 5 of the markets that fill it, one of its worst months for weather
Nothing new starts in July.
Still on: Low-season shutdown (15 May – 15 Oct (usually))
August in Ko Chang (Koh Chang)
Ko Chang (Koh Chang) weather in August →Shoulder season — school holidays in 4 of the markets that fill it, an ordinary month
Nothing new starts in August.
Still on: Low-season shutdown (15 May – 15 Oct (usually))
September in Ko Chang (Koh Chang)
Ko Chang (Koh Chang) weather in September →Quiet — school holidays in 3 of the markets that fill it, one of its worst months for weather
Nothing new starts in September.
Still on: Low-season shutdown (15 May – 15 Oct (usually))
October in Ko Chang (Koh Chang)
Ko Chang (Koh Chang) weather in October →Busy — October semester break in Thailand, school holidays in 3 of the markets that fill it
Nothing new starts in October.
Still on: Low-season shutdown (15 May – 15 Oct (usually))
November in Ko Chang (Koh Chang)
Ko Chang (Koh Chang) weather in November →Busy — High season on the island
- Season
High season on the island
1 Nov – 30 Apr · usuallyDry seasonCrowdedCalm water on the west-coast beaches, every ferry from Laem Ngop running, and the whole island open. It is also the only stretch when the road over the ridge is not a river.
- Nature
Wreck and reef diving season
1 Nov – 30 Apr · usuallyDive seasonThe months the boats run south to the HTMS Chang wreck and the Rang islands, when visibility is worth the crossing. Outside them most shops simply shut.
December in Ko Chang (Koh Chang)
Ko Chang (Koh Chang) weather in December →Peak crowds — travelers describe it as peak season, High season on the island
- Holiday
Christmas and New Year peak
18 Dec – 5 JanChristmas & New YearCrowdedBook earlyThe fortnight everything on the island sells out at once, including the car ferry slots. Book the crossing as carefully as the room. Source ↗
Still on: High season on the island (1 Nov – 30 Apr (usually)), Wreck and reef diving season (1 Nov – 30 Apr (usually))