The climate in Perth during December can be summarized as warm and dry.
December is in the summer in Perth and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 28°C (83°F), whilst at night 16°C (60°F) is normal.
|Daytime temperature||28.3°C 82.9°F|
|Nightly temperature||15.7°C 60.3°F|
|Average temperature||22°C 71.6°F|
|Daily sunshine||11.6 hrs|
|Avg rainfall||13 mm 0.5 ins|
|Rainy days||4 days|
|Sea temperature||20.8°C 69.4°F|
|Windspeed||19.1kph 12 mph|
On average December is the 2nd driest month of the year in Perth with around 13mm 0.5 inches of rain making it a dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.
On the flip side this corresponds to an average of 11.6 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in December 2019.
|Hottest month:||February||30.9°C 87.6°F|
|Driest month:||January||8mm 0.3ins|
|Coldest month:||July||17.4°C 63.3°F|
|Wettest month:||June||177mm 7ins|