Perth Weather in December

Average Temperatures in Perth in December

The average daytime temperature in Perth in December is 28 °C (83 °F), while the mercury hovers around 17 °C (63 °F) at night. 

In 2021, Perth recorded the hottest December ever, with four consecutive days of over 40 °C (104 °F) and the maximum daytime temperature of 43.5 °C (110.3 °F). 

Average Sea Temperatures in Perth in December

The average sea temperature in Perth in December is 21 °C (69.8 °F), which is comfortable enough for swimming and popular water activities like surfing, kiteboarding, jet skiing, and sailing. 

Average Sunshine Hours per Day in Perth in December

Perth sees 12 hours of bright sunshine in December and 357 during the entire month. The average day has 14.2 hours of daylight, with the sun rising between 5:03 am and 5:12 am and setting between 7:07 pm and 7:25 pm. 

UV levels in Perth in December

The average daily maximum UV index in December is 12, which represents an extreme health risk from unsafe exposure to the sun. Unprotected skin can burn in minutes, so be sure to always seek shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses.

Average Rainfall in Perth in December

December is a dry month, with only a 6% chance of rain and 7.6 mm (0.30 in) of precipitation. Tropical cyclones may occur around Perth, although they are more common in the northern part of the state. 

Perth has much lower humidity in the summer compared to other major Australian cities like Sydney and Brisbane. The average relative humidity in December is 49%, which is considered comfortable. 

Best Things to Do in Perth in December

December is the peak season in Perth and there’s no shortage of things to see and do as the year comes to an end. Here’s our pick of events you shouldn’t miss this month. 

Moonlight Cinema 

From early November until late March, you can enjoy classics, recent releases, and lesser-known cult movies under the stars in Kings Park and Botanic Garden. Bring your own picnic or purchase food and drinks on site.

Perth City Festival of Christmas

In anticipation of the festive season, Perth’s streets come to life with Christmas markets, illuminated trails, parades, concerts, and other fun-filled activities for the entire family. The Festival of Christmas is held in the city centre near Northbridge and East Perth.

New Year’s Eve 

The last day of the year is packed with music and festive events across the city. Don’t miss the Elizabeth Quay Fun Fair with fun carnival rides, sideshow games, roving performers, and food trucks. The best spots to watch the traditional midnight fireworks include Yagan Square, Perth Cultural Centre, Northbridge Piazza and James Street.

Recommended Itineraries for Perth in December

Planning to visit Perth in December? Start by consulting First Light Travel’s Blog and Western Australia Itineraries that provide plenty of inspiration. And if you prefer to have a customised trip, don’t hesitate to get in touch with our Australia travel specialists who will create an itinerary just for you.