Thailand
Ayutthaya in December
🌤️ Cool seasonWarm, a little humid and mostly dry.
🎒 Pack: light, breathable clothes & sunscreen · sunglasses & hat
Why December scores 8.9What goes into the score
How it works- Weather comfort8.8
- ✓Warm (30.4°C highs / 19.7°C lows)
- !Humid (dew point 19°C)
- ✓Mostly dry (~10 mm rain)
- Air quality8.5
- ✓Good (within WHO guideline) (PM2.5 ~14 µg/m³)
- Seasonal hazards10.0
- ·No notable seasonal hazards
- Safety baseline8.0
- ·Normal precautions
| Dec | Jan | |
|---|---|---|
| Score | 8.9 Excellent | 8.6 Excellent |
| Season | 🌤️ Cool season | 🌤️ Cool season |
| High / low | 30° / 20° | 33° / 20° |
| Rain | 10 mm | 14 mm |
| Humidity | dew pt 19° | dew pt 18° |
| PM2.5 | 14 µg/m³ | 22 µg/m³ |
Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast).
Holidays & crowdsDecember 2026
Long weekendThere'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 AyutthayaEvents, sights, food & souvenirs
Check event dates locallyThe former capital of the Siamese kingdom, now a UNESCO-listed historical park of temple ruins about 80 km north of Bangkok.
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
Coming up later
SongkranEvery year13–15 April every year
Thai New Year with water throwing.
Why go: Expect to get wet; protect phones and cameras.
Where: Citywide
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
Wat Mahathat
Temple ruins with a Buddha head entwined in tree roots.
💡 Do not stand higher than the Buddha head; crouch for photos.
Wat Chaiwatthanaram
A riverside temple in Khmer style, popular at sunset.
Wat Phra Si Sanphet
Three chedis in the old royal palace grounds.
Wat Yai Chai Mongkhon
A temple with a tall chedi and rows of Buddha statues.
Bang Pa-In Palace
A royal palace complex south of the city.
💡 Dress modestly, covering shoulders and knees.
Wat Lokayasutharam
A large outdoor reclining Buddha.
Kuay teow ruea
Boat noodles in a rich, dark broth.
💡 Riverside stalls
Roti sai mai
Thin crepes wrapped around cotton-candy strands.
💡 Roadside shops in the city
Giant river prawns
Large freshwater prawns, usually grilled, a local favourite.
💡 Riverside restaurants
Roti sai mai
Packed sets of roti and candy floss.
💡 Shops around the city
Aranyik knives
Knives from a blacksmithing village in the province.
💡 Local markets