SeasonScore
Ayutthaya, Thailand
Photo: Mozhar · CC BY-SA 3.0

Thailand

Ayutthaya in May

🌦️ Hot → rainy season

Hot, humid and often rainy. Watch for hazy air.

🎒 Pack: light, breathable clothes & sunscreen · compact umbrella or rain jacket · quick-dry fabrics · N95 mask for hazy days

Best months: Dec (8.9), Jan (8.6), Nov (8.3)

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Why May scores 6.7What goes into the score

How it works
🌡️ 35° / 26°C🌧️ 156 mm💧 dew pt 24°🍃 PM2.5 39
  • Weather comfort5.8
    • !Hot (35°C highs / 26.3°C lows)
    • !Very humid/sticky (dew point 23.8°C)
    • !Wet: ~156 mm rain, ~6 heavy-rain days
  • Air quality5.2
    • !Unhealthy for sensitive groups (PM2.5 ~39 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline8.0
    • ·Normal precautions
Compare monthsPut May side by side with another month
MayDec
Score6.7 Good8.9 Excellent
Season🌦️ Hot → rainy season🌤️ Cool season
High / low35° / 26°30° / 20°
Rain156 mm10 mm
Humiditydew pt 24°dew pt 19°
PM2.539 µg/m³14 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 AyutthayaEvents, sights, food & souvenirs

Check event dates locally

The former capital of the Siamese kingdom, now a UNESCO-listed historical park of temple ruins about 80 km north of Bangkok.

Events in May
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 lunar month — usually November

People float small decorated offerings (krathong) on rivers.

Why go: Riverside temples are busy in the evening.

Where: Rivers around the city

Ayutthaya World Heritage FairDate variesUsually December

Light and sound shows celebrate the city's history.

Why go: Book accommodation early for the show nights.

Where: Historical park

SongkranEvery year13–15 April every year

Thai New Year with water throwing.

Why go: Expect to get wet; protect phones and cameras.

Where: Citywide