Perth Weather in December
In December, Perth averages a high of 27°C (81°F) and a low of 17°C (63°F), based on 21 years of historical weather data from PERTH REGIONAL OFFICE.
27°C
Average high
81°F
17°C
Average low
63°F
42°C
Record high
108°F · 1974
9°C
Record low
49°F · 1973
What to Expect in Perth in December
Typical December days in Perth reach 27°C (81°F) during the afternoon and cool to around 17°C (63°F) overnight. On average, measurable rain falls on about 12% of days this month. Over the past 21 years, December temperatures in Perth have ranged from a record high of 42°C (1974) down to a record low of 9°C (1973).
For a day-by-day look or other months, see the full Perth weather history.