What December feels like in Perth
In Perth, December brings early summer (Perth is in the southern hemisphere, so the seasons run opposite to Europe and North America). Afternoons are hot, so sightseeing works best in the morning or evening. Once the sun goes down the air changes: nights stay mild. The air is comfortable — neither muggy nor dry.
Rain in Perth in December
December is a dry month in Perth; rain falls about one day in 16. Wet days average about 6.2 mm (0.2 in), enough to soak you without an umbrella. That is lighter than the city's yearly norm of about 7.8 mm per rainy day. December is Perth's driest month of the year.
Daylight and sunshine in December
In mid-December, sunrise is at about 5:05 am and sunset at about 7:18 pm (local time) — 14 h 13 min of daylight. Since mid-November the day has gained 29 min. The sun is out for roughly 94% of those daylight hours, so skies are mostly clear.
How December compares to the rest of the year
Ranked by average high, December comes out as the 3rd warmest month in Perth. Compared with November, afternoons are 3.3°C (5.9°F) warmer, with 8 mm less rain. Temperatures keep climbing into January. The next month's average high: 30.8°C (87.4°F).
Who December suits
- Sightseeing: a good fit — daytime temperatures are fine for walking around.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
- Beach: less ideal — too many rainy days.
Tips for visiting Perth in December
Versatile Layers
Mornings and evenings are cooler than midday, so dress in layers.
Sun Protection
Sunscreen, a hat and sunglasses; light breathable clothes.
Quick questions
How warm is Perth in December?
Afternoons average 28.9°C (84°F) and nights about 17.6°C (63.7°F) — hot by most people's standards. It is the 3rd warmest month of the year.
Does it rain a lot in Perth in December?
Hardly — only about 2 rainy days and 12 mm for the whole month.
What should I wear in Perth in December?
The numbers point to versatile layers and sun protection. Bring something extra for the cooler evenings.
Is December or January better for visiting Perth?
December scores better on our climate ranking (#3 of 12 vs #4), rated Great against Great. January is warmer.