Phnom Penh weather in December 2025

Expect daytime maximum temperatures of 86°F in Phnom Penh, Cambodia in December and high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average.

  • 86°F maximum daytime temperature in December in Phnom Penh86
    86°F max day temperature
  • 9 hours of sunshine per day
  • 4 days with some rainfall in December in Phnom Penh4
    4 days with some rainfall
  • 72°F minimum night-time temperature in December in Phnom Penh72
    72°F min night temperature
  • 11 hours of daylight per day in December in Phnom Penh11
    11 hours of daylight per day
  • High heat & humidity in December in Phnom PenhH
    High heat & humidity
  • 1.1 inches monthly rainfall in December in Phnom Penh1.1
    1.1 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in December in Phnom Penh10
    10 (Very High) UV index

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The December weather guide for Cambodia (Phnom Penh) 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)  |  Imperial (°F)

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How hot is it in Phnom Penh in December?

Daytime temperatures usually reach 86°F in Phnom Penh in December with high heat and humidity, falling to 72°F at night.

How sunny is it in Phnom Penh in December?

There are normally 9 hours of bright sunshine each day in Phnom Penh in December - that's 74% of daylight hours.

Does it rain in Phnom Penh in December?

There are usually 4 days with some rain in Phnom Penh in December and the average monthly rainfall is 1.1 inches.

Phnom Penh December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 06:04 17:34
Tuesday, 16th December 2025 06:12 17:40
Wednesday, 31st December 2025 06:19 17:47

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