Is Perth hot in December?
Days are typically warm at 29.4°C, while nights average 16.4°C.
Australia · 1991–2020 normal
Typical December weather in Perth: 29.4°C by day, 16.4°C at night, 10 mm of rain over 2 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, December scores 80 out of 100 (April leads the year at 90). Daylight is calculated as 14 h 14 from latitude -31.95°. Open-water sea temperature is 20.8°C (24 km from the place centre).
December at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically warm at 29.4°C, while nights average 16.4°C.
The measured monthly average is 10 mm across about 2 wet days.
There are about 14 h 14 between sunrise and sunset at mid-month, calculated from the place latitude.
December ranks 4 of 12 in our weather comparison; April ranks first.
The evidence behind this page
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The weather comparison for Perth is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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