Perth Weather in December
Perth in December sees high daytime temperatures of 30°C (86°F) and nighttime lows of 17°C (63°F). With just 12 mm (0.5 in) of rainfall on average, it's the driest month of the year.
Rainfall in Perth in December
With the least rainfall of the year, this month offers good conditions for outdoor exploration. Take advantage of the dry weather to plan your activities. Typically, about 4 days will experience rainfall, with an average of 12 mm (0.5 in) for the month. The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.
Temperature in Perth in December
December is a excellent month in Perth, with 30°C (86°F) during the day and 17°C (63°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 17°C (63°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Perth in December
The city usually sees around 354 hours of sunlight, indicating many sunny days , a great month for sightseeing.
Wind Speed in Perth in December
Wind speeds average 7 m/s (14 knots) during December. At this speed, you experience strong wind that can make entire trees sway and create resistance when walking. Since this is an average, expect variation from moderate windy periods to particularly gusty days when umbrellas become difficult to control.
Average water temperature in December
With water at 19°C (66°F), swimming is comfortable for most people. It feels refreshing rather than cold, though it depends a bit on personal preference.Should you favor a climate that's both dry and comfortably warm, April, May, September, October and November typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Perth's climate page.
Perth Temperature in December
Min Temperature
17°C (63°F)
Max Temperature
30°C (86°F)
Water Temperature
19°C (66°F)
Chance of Rain
13%
Precipitation
12 mm (0.5 in)
Rainy days
4 days
Humidity
41%
Windspeed
7 m/s (14 knots)
Sunshine
354 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Perth typically rise from around 27°C (81°F) at the start of December to approximately 30°C (86°F) by the end. Nights are pleasant, with lows typically ranging from 14°C (57°F) to 18°C (64°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Perth in December
Browse day-by-day weather records for Perth spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Perth historical weather extremes in December
Based on 49 years of weather observations in Perth between 1976 and 2025, these are the recorded extremes.
- The hottest December day on record in Perth reached 43°C (109°F) (December 26, 2021).
- Perth experienced its chilliest December day on December 5, 2015, reaching only 18°C (64°F).
- The lowest overnight temperature recorded in December was 5°C (41°F) (December 1, 2020).
Best Places in Australia in December
Find out more about the weather in Australia and which places have the best travel conditions in this month. See all of Australia in December →
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What to Wear in Perth in December
Warm weather calls for comfortable, breathable clothing in December. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Almost no rain is expected, so no need to bring rain gear. With water temperatures around 19°C (66°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Perth in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Perth's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Perth climate overview or explore weather in Australia.
