The highest day temperature in December 2023 was 98°F. The lowest night temperature was 59°F. The average values for day and night temperatures during December were 84.6°F и 68.5°F respectivly.

The average sea surface temperature in December 2023 for Perth was 76.1°F. The maximum and minimum values were 74.6°F and 78.2°F respectively.

Most of the days in December are sunny but you can also expect cloudy and gloomy days.

Precipitation total in December for Perth is 0.5 in. It makes december the least rainy month of the year.

The average wind speed in December is 10.8 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Perth in December is 12.2 hours.