Hottest (avg)
#4 / 12
Perth in December
December weather, climate averages, and packing tips.
Avg High
Avg Low
Rain
Daylight 14h
What to expect
December marks a typically very warm period of summer, where temperatures are climbing noticeably. Daytime highs average 29°C / 84°F, dropping to 17°C / 63°F at night.
The atmosphere is generally sunny and dry, perfect for uninterrupted outdoor plans. The sun is very strong at this time of year, making sun protection essential during the day.
Statistically, this is the driest month historically.
December in context
How it compares to the rest of the year in Perth.
Wettest (avg)
#1 / 12
Daylight Hours
#1 / 12
Windiest (avg)
#2 / 12
Highest UV
#2 / 12
Most Humid
#10 / 12
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight
- 14.2 hours
- UV index (max)
- 10
- Typical sun hours
- 05:06 – 19:17
Rain & Snow
- Total
-
- Rainy days
- 3
- Cloud cover
- 26%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 52%
- Wind (avg)
-
- Wind (max gusts)
-
Frequently asked questions
Is December a good time to visit Perth?
Typical December days in Perth reach highs of 29°C (84°F) with nights around 17°C (63°F). It usually feels hot by day and mild after dark. It is one of the drier months, which suits outdoor exploring and sightseeing.
What are temperatures like in December?
In December, you can usually expect highs of 29°C (84°F) and lows near 17°C (63°F). That means hot days and mild nights, so pack layers you can add or remove.
How much does it rain in December?
Rainfall in December averages 10 mm (0.39 in) across roughly 3 days. Overall it is a mostly dry time of year, so showers are usually brief rather than all-day downpours.
How many hours of daylight are there in December?
You can expect about 14 hours of daylight in December. Sunrise is typically around 05:06 and sunset near 19:17. You get long days with comfortable amounts of daylight.
Does the weather change during December?
December often starts off a little cooler and becomes noticeably warmer by the end of the month.
How strong is the sun in December?
UV levels frequently reach very high levels (around 10), so strong sun protection is essential, especially around midday.
Is it windy in December?
In December, average wind speeds are around 20 km/h (12 mph), with gusts on the windiest days reaching about 60 km/h (37 mph). On the ground, it is it can feel quite windy at times, particularly when weather systems move through.