Thailand
Koh Chang in May
🌦️ Hot → rainy seasonPleasant, humid and very wet. Watch for flood risk.
🎒 Pack: compact umbrella or rain jacket · quick-dry fabrics · waterproof sandals
Why May scores 7.4What goes into the score
How it works- Weather comfort5.9
- ✓Comfortable temperatures (27.6°C highs / 25.6°C lows)
- !Very humid/sticky (dew point 24.6°C)
- !Wet: ~301 mm rain, ~12 heavy-rain days
- Air quality9.9
- ✓Good (within WHO guideline) (PM2.5 ~6 µg/m³)
- Seasonal hazards8.5
- !Flood: ~12 heavy-rain days (≥10 mm) in an average May
- Safety baseline8.0
- ·Normal precautions
| May | Jan | |
|---|---|---|
| Score | 7.4 Good | 9.0 Excellent |
| Season | 🌦️ Hot → rainy season | 🌤️ Cool season |
| High / low | 28° / 26° | 26° / 22° |
| Rain | 301 mm | 56 mm |
| Humidity | dew pt 25° | dew pt 21° |
| PM2.5 | 6 µg/m³ | 11 µg/m³ |
Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast).
Holidays & crowdsMay 2027
Long weekendThere's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.
- National Labor Day 1–4 May · 4 days off in a row
Other public holidays: Visakha Bucha (20 May)
National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).
Explore Koh ChangEvents, sights, food & souvenirs
Check event dates locallyKoh Chang is a large, mountainous island in Trat province near the Cambodian border, with jungle waterfalls, west-coast beaches and fishing villages.
Rocket Festival (Bun Bang Fai)Across Thailand
Villages launch homemade rockets to summon rain for the rice season.
Coming up later
Loy KrathongDate variesFull moon of the 12th Thai lunar month, usually November; date moves each year
Krathong are floated on the sea under the full moon.
Why go: Marks the start of the dry high season.
Where: Beaches and piers
Songkran (Thai New Year)Every year13-15 April every year
Thai New Year water festival.
Why go: Water fights along the main road; drive carefully.
Where: White Sand Beach and main road
Klong Plu Waterfall
A three-tier waterfall with a swimming pool at its base, inside the national park.
💡 Flow is strongest during and right after the rainy season.
White Sand Beach
The island's busiest beach, with resorts, bars and restaurants.
Bang Bao
A fishing village built on a long pier at the southern end, now lined with shops and seafood restaurants.
Salak Phet
A quieter fishing village on the east coast with stilt houses and mangroves.
Koh Chang Marine National Park islands
Snorkelling and diving trips go to nearby islands such as Koh Wai and Koh Rang.
💡 Seas are rough and trips limited during the south-west monsoon.
Lonely Beach
A west-coast beach with a backpacker scene and rocky snorkelling spots.
Fresh seafood
Fish, crab and prawns, often grilled or steamed with lime and chilli.
💡 Pier restaurants at Bang Bao and Salak Phet
Moo cha muang
Eastern Thai pork curry flavoured with sour cha muang leaves.
💡 Local Thai eateries
Thai street food
Curries, noodles and grilled skewers.
💡 Small local restaurants and markets
Dried seafood
Dried squid, shrimp and fish from the island's fishing villages.
💡 Bang Bao and Salak Phet
Trat yellow oil (nam man lueang)
A herbal liniment Trat province is well known for.
💡 Pharmacies and souvenir shops