What January feels like in Perth
For Perth, January is the heart of summer (Perth is in the southern hemisphere, so the seasons run opposite to Europe and North America). The midday hours are hot; shade and water matter on long walks. After dark the temperature drops clearly: nights stay warm. The air is comfortable — neither muggy nor dry.
Rain in Perth in January
Rain is rare in January — most weeks pass without a wet day. When rain comes it is heavy, about 9.6 mm (0.4 in) per wet day, often in short, strong bursts. The yearly figure is similar, around 7.8 mm per wet day. It is among the three driest months of the year.
Daylight and sunshine in January
In mid-January, sunrise is at about 5:25 am and sunset at about 7:26 pm (local time) — 14 h 1 min of daylight. Compared with mid-December, the day has lost 12 min. Measured sunshine covers about 91% of the daylight — skies are mostly clear.
How January compares to the rest of the year
In Perth's temperature order, January sits as the 2nd warmest month. Against December, the average high is 1.9°C (3.4°F) higher, with 7 mm more rain. Temperatures keep climbing into February. February averages a high of 31°C (87.8°F).
Who January suits
- Sightseeing: a good fit — comfortable enough to explore on foot all day.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
- Beach: less ideal — too many rainy days.
Tips for visiting Perth in January
Versatile Layers
Days are noticeably warmer than nights — layers you can add or remove.
Sun Protection
Protect yourself from strong sun: hat, SPF and plenty of water.
Quick questions
How warm is Perth in January?
Expect around 30.8°C (87.4°F) in the afternoon and 19.2°C (66.6°F) at night, which most visitors would call hot.
Does it rain a lot in Perth in January?
No — January is one of the drier times, with about 2 rainy days and 19 mm in total.
What should I wear in Perth in January?
Based on the averages: versatile layers and sun protection. There is little need to change for the evening.
Is January or February better for visiting Perth?
On our 12-month climate ranking, January comes out ahead (#4 of 12 vs #5).