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

Thailand

Koh Phangan in December

🌧️ Northeast monsoon rains

Warm, humid and very wet. Watch for flood risk.

🎒 Pack: compact umbrella or rain jacket · quick-dry fabrics · waterproof sandals

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

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Why December scores 7.3What goes into the score

How it works
🌡️ 28° / 27°C🌧️ 373 mm💧 dew pt 24°🍃 PM2.5 11
  • Weather comfort5.9
    • ✓Warm (28°C highs / 26.9°C lows)
    • !Very humid/sticky (dew point 23.7°C)
    • !Wet: ~373 mm rain, ~9 heavy-rain days
  • Air quality9.1
    • ✓Good (within WHO guideline) (PM2.5 ~11 µg/m³)
  • Seasonal hazards8.5
    • !Flood: ~9 heavy-rain days (≥10 mm) in an average December
  • Safety baseline8.0
    • ·Normal precautions
Compare monthsPut December side by side with another month
DecMar
Score7.3 Good8.6 Excellent
Season🌧️ Northeast monsoon rains☀️ Dry season
High / low28° / 27°29° / 27°
Rain373 mm45 mm
Humiditydew pt 24°dew pt 24°
PM2.511 µg/m³11 µg/m³

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

Holidays & crowdsDecember 2026

Long weekend

There's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.

  • HM King Bhumibol Adulyadej the Great's Birthday 5–7 Dec · 3 days off in a row
  • New Year 31 Dec – 3 Jan · 4 days off in a row

Other public holidays: Constitution Day (10 Dec)

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 December
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

Plan this tripTickets, data and transfers for Koh Phangan

Airport transfer Kiwitaxi

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