SeasonScore
Siem Reap, Cambodia
Photo: N 3 14 15 92 65 · CC BY-SA 4.0

Cambodia

Siem Reap in December

☀️ Dry season

Warm, a little humid and mostly dry.

🎒 Pack: light, breathable clothes & sunscreen · sunglasses & hat

Best months: Dec (9.0), Jan (8.7), Nov (8.5)

‹
Every month at a glanceTap a month to open it
›

Why December scores 9.0What goes into the score

How it works
🌡️ 31° / 21°C🌧️ 7 mm💧 dew pt 19°🍃 PM2.5 9
  • Weather comfort8.8
    • ✓Warm (31°C highs / 21°C lows)
    • !Humid (dew point 18.8°C)
    • ✓Mostly dry (~7 mm rain)
  • Air quality9.4
    • ✓Good (within WHO guideline) (PM2.5 ~9 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline7.0
    • ·Increased caution
Compare monthsPut December side by side with another month
DecJan
Score9.0 Excellent8.7 Excellent
Season☀️ Dry season☀️ Dry season
High / low31° / 21°32° / 20°
Rain7 mm4 mm
Humiditydew pt 19°dew pt 17°
PM2.59 µg/m³18 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: Siem Reap weather-station normals. Rainfall: Siem Reap weather-station normals (national met service).

Holidays & crowdsDecember 2026

No long holidays

No long public-holiday weekends this month. School holidays aren't counted, so check those if you want to avoid family crowds.

Other public holidays: Peace Day in Cambodia (29 Dec)

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Explore Siem ReapEvents, sights, food & souvenirs

Check event dates locally

Cambodian town that serves as the base for visiting the temples of Angkor, the vast former capital of the Khmer Empire.

Events in December

No major events on our calendar for December.

Coming up later

Equinox sunrise at Angkor WatDate variesAround the spring and autumn equinoxes, about 20–21 March and 22–23 September

The sun rises directly over the central tower when seen from the western entrance.

Why go: Very crowded; arrive well before dawn.

Where: Angkor Wat

Khmer New YearDate variesUsually 13 or 14 to 16 April

Three days of New Year celebrations with temple visits, games and water throwing.

Why go: Temples are busy with Cambodian visitors.

Where: Nationwide and around the Angkor temples

Pchum BenDate variesLunar calendar — usually September or October

A 15-day festival when Cambodians make offerings to the spirits of ancestors.

Why go: The last days are public holidays; many people travel home.

Where: Pagodas

Plan this tripTickets, data and transfers for Siem Reap

Airport transfer Kiwitaxi

Partner links: we may earn a small commission at no extra cost to you. It never affects scores.