Thailand
Koh Lanta in May
🌧️ Southwest monsoonWarm, humid and very wet.
🎒 Pack: light, breathable clothes & sunscreen · compact umbrella or rain jacket · quick-dry fabrics
Why May scores 7.6What goes into the score
How it works- Weather comfort5.7
- ✓Warm (30°C highs / 29°C lows)
- !Very humid/sticky (dew point 25.3°C)
- !Wet: ~258 mm rain, ~8 heavy-rain days
- Air quality10.0
- ✓Good (within WHO guideline) (PM2.5 ~5 µg/m³)
- Seasonal hazards9.5
- !Flood: ~8 heavy-rain days in an average May
- Safety baseline8.0
- ·Normal precautions
| May | Feb | |
|---|---|---|
| Score | 7.6 Very good | 8.6 Excellent |
| Season | 🌧️ Southwest monsoon | ☀️ Dry season |
| High / low | 30° / 29° | 29° / 27° |
| Rain | 258 mm | 32 mm |
| Humidity | dew pt 25° | dew pt 24° |
| PM2.5 | 5 µg/m³ | 14 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 LantaEvents, sights, food & souvenirs
Check event dates locallyKoh Lanta is a laid-back island in Krabi province with long west-coast beaches, a historic old town and access to nearby islands for snorkelling and diving.
Rocket Festival (Bun Bang Fai)Across Thailand
Villages launch homemade rockets to summon rain for the rice season.
Coming up later
Loy Rua (Urak Lawoi boat-floating ceremony)Date variesTwice a year at full moons of the 6th and 11th lunar months, roughly June and November; dates move each year
The Urak Lawoi sea people float a small boat to carry away bad luck, with music and dancing.
Why go: A community ritual; watch respectfully and ask before photographing.
Where: Sang Ka U village and Urak Lawoi communities
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: Early in the season, when some resorts are only just reopening.
Where: Beaches and Old Town
Songkran (Thai New Year)Every year13-15 April every year
Thai New Year water festival.
Why go: Falls near the end of high season, so many resorts are still open.
Where: Saladan and main roads
Mu Ko Lanta National Park
The island's southern tip, with a lighthouse, short trail and rocky beach.
💡 Watch for monkeys around food.
Lanta Old Town
A traditional east-coast town of wooden stilt houses, with Thai, Chinese and Muslim heritage.
Koh Rok
Twin islands with white sand and good snorkelling, reached by speedboat.
💡 Usually closed to visitors during the monsoon, roughly mid-May to mid-October.
Four Islands trip
A boat tour including Koh Mook's Emerald Cave, swum into through a sea tunnel.
💡 Seas are calmest from November to April.
Hin Daeng and Hin Muang
Deep pinnacle dive sites known for manta rays and occasional whale sharks.
Long Beach (Phra Ae)
A long, easy-going sandy beach on the west coast with sunset views.
Fresh seafood
Grilled fish, prawns and crab.
💡 Beach restaurants and Old Town seafood houses
Southern Thai curries
Spicy turmeric-rich curries typical of the south.
💡 Local eateries
Roti
Griddled flatbread with curry or sweet fillings.
💡 Muslim food stalls
Massaman curry
A mild, rich curry with Muslim-Thai roots.
💡 Local restaurants
Batik
Hand-painted batik clothing and cloth.
💡 Shops in Saladan and Old Town
Cashew nuts
Southern Thai roasted cashews.
💡 Local shops
Airport transfer Kiwitaxi
Partner links: we may earn a small commission at no extra cost to you. It never affects scores.