Perth weather in December 2025

Expect daytime maximum temperatures of 28°C in Perth, Western Australia in December based on long-term weather averages. There are 11 hours of sunshine per day on average.

  • 28°C maximum daytime temperature in December in Perth28
    28°C max day temperature
  • 11 hours of sunshine per day
  • 4 days with some rainfall in December in Perth4
    4 days with some rainfall
  • 16°C minimum night-time temperature in December in Perth16
    16°C min night temperature
  • 14 hours of daylight per day in December in Perth14
    14 hours of daylight per day
  • Low heat & humidity in December in PerthL
    Low heat & humidity
  • 12 mm monthly rainfall in December in Perth12
    12 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in December in Perth11
    11+ (Extreme) UV index
  • 21°C sea temperature in December in Perth21
    21°C sea temperature

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The December weather guide for Western Australia (Perth) 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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More about Australia

How hot is it in Perth in December?

Daytime temperatures usually reach 28°C in Perth in December with low heat and humidity, falling to 16°C at night.

How sunny is it in Perth in December?

There are normally 11 hours of bright sunshine each day in Perth in December - that's 77% of daylight hours.

How warm is the sea around Perth in December?

The average sea temperature around Perth in December is 21°C.

Does it rain in Perth in December?

There are usually 4 days with some rain in Perth in December and the average monthly rainfall is 12mm.

Perth December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 05:03 19:08
Tuesday, 16th December 2025 05:05 19:19
Wednesday, 31st December 2025 05:13 19:26

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