SeasonScore
Koh Phangan, Thailand
Photo: Christian Fernandez Gamio · CC BY-SA 3.0

Thailand

Koh Phangan in May

☀️ Dry season

Warm, humid and often rainy.

🎒 Pack: light, breathable clothes & sunscreen · compact umbrella or rain jacket · quick-dry fabrics

Best months: Mar (8.6), Feb (8.4), Jan (8.2)

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Why May scores 8.0What goes into the score

How it works
🌡️ 31° / 29°C🌧️ 186 mm💧 dew pt 25°🍃 PM2.5 4
  • Weather comfort6.3
    • ✓Warm (30.5°C highs / 28.9°C lows)
    • !Very humid/sticky (dew point 25.1°C)
    • !Wet: ~186 mm rain, ~5 heavy-rain days
  • Air quality10.0
    • ✓Good (within WHO guideline) (PM2.5 ~4 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline8.0
    • ·Normal precautions
Compare monthsPut May side by side with another month
MayMar
Score8.0 Very good8.6 Excellent
Season☀️ Dry season☀️ Dry season
High / low31° / 29°29° / 27°
Rain186 mm45 mm
Humiditydew pt 25°dew pt 24°
PM2.54 µg/m³11 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast).

Holidays & crowdsMay 2027

Long weekend

There'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 PhanganEvents, sights, food & souvenirs

Check event dates locally

Koh Phangan is an island in the Gulf of Thailand, known for the Full Moon Party at Haad Rin as well as quieter beaches, jungle and yoga retreats.

Events in May
Full Moon PartyDate variesMonthly around the full moon; may shift by a day or two around Buddhist holidays

An all-night beach party with music stages and huge crowds.

Why go: Check the exact date each month; Haad Rin accommodation fills and prices rise.

Where: Haad Rin Sunrise Beach

Coming up later

Songkran (Thai New Year)Every year13-15 April every year

Thai New Year water festival.

Why go: Expect water fights in the main towns.

Where: Thong Sala and Haad Rin