The climate in Yanchep during December can be summarized as warm and very dry.
December is in the summer in Yanchep 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 (61°F) is normal.
Daytime temperature | 28.3°C 82.9°F |
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Nightly temperature | 16°C 60.7°F |
Average temperature | 22.1°C 71.8°F |
Daily sunshine | 11.7 hrs |
Avg rainfall | 10 mm 0.4 ins |
Rainy days | 4 days |
Sea temperature | 20.8°C 69.4°F |
Humidity | 44% |
Windspeed | 19.7kph 12 mph |
On average December is the 2nd driest month of the year in Yanchep with around 10mm 0.4 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 11.7 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 Yanchep in December 2025.
Best places to visit in December
Hottest month: | February | 30.9°C 87.6°F |
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Driest month: | January | 8mm 0.3ins |
Sunniest month: | January | 12hrs |
Coldest month: | July | 17.8°C 64°F |
Wettest month: | June | 149mm 5.9ins |