Siemreab weather in December 2025

Expect 30°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Siemreab in December. Check more long-term weather averages for Siemreab in December before you book your next holiday to Cambodia in 2025/2026.

  • 30°C maximum daytime temperature in December in Siemreab30
    30°C max day temperature
  • 9 hours of sunshine per day
  • 2 days with some rainfall in December in Siemreab2
    2 days with some rainfall
  • 20°C minimum night-time temperature in December in Siemreab20
    20°C min night temperature
  • 11 hours of daylight per day in December in Siemreab11
    11 hours of daylight per day
  • High heat & humidity in December in SiemreabH
    High heat & humidity
  • 7 mm monthly rainfall in December in Siemreab7
    7 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in December in Siemreab9
    9 (Very High) UV index

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The December weather guide for Cambodia (Siemreab) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Siemreab in December?

Daytime temperatures usually reach 30°C in Siemreab in December with high heat and humidity, falling to 20°C at night.

How sunny is it in Siemreab in December?

There are normally 9 hours of bright sunshine each day in Siemreab in December - that's 77% of daylight hours.

Does it ever rain in Siemreab in December?

There are usually 2 days with some rain in Siemreab in December and the average monthly rainfall is 7mm.

Siemreab December sunrise & sunset times

Browse the sunrise and sunset times for Siemreab in December 2025. Select a month to view Siemreab sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 06:12 17:35
Tuesday, 16th December 2025 06:20 17:40
Wednesday, 31st December 2025 06:27 17:48

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