Thornlie Weather in December

December in Thornlie averages 30°C (86°F) during the day and 16°C (61°F) at night. With just 13 mm (0.5 in) of rainfall on average, it doesn't get much drier than this.

Rainfall in Thornlie in December

Expect fewer clouds and less rain as the month goes on. This makes it an ideal time for outdoor activities. This month experiences about 4 days of rain according to historical data, averaging 13 mm (0.5 in). Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.

Temperature in Thornlie in December

The perfect temperature in Thornlie in December makes it a solid month to visit, with 30°C (86°F) during the day and 16°C (61°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights drop to around 16°C (61°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Thornlie in December

Enjoy a sunny month with about 354 hours of sunshine, the clear skies make Thornlie even more beautiful.

Wind Speed in Thornlie 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

The water temperature is 19°C (66°F). It's not warm, but most people find it perfectly fine for a swim once they're in.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. April, May, September, October and November typically offer the best weather for Thornlie.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Australia, check out our Thornlie's climate page.

Thornlie Temperature in December

Min Temperature 16°C (61°F)  

Max Temperature 30°C (86°F)  

Water Temperature 19°C (66°F) *  

Chance of Rain 13%  

Precipitation 13 mm (0.5 in)  

Rainy days 4 days  

Humidity 41% *  

Windspeed 7 m/s (14 knots) *  

Sunshine 354 hours *  

Percentage Sunshine *  

* Data from: Perth, Australia (13 KM, 8 Miles).

What to Wear in Thornlie in December

Warm temperatures in December make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. With water temperatures around 19°C (66°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Thornlie in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Australia, check out our Thornlie's climate page.

More climate data for Thornlie

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Thornlie climate overview or explore weather in Australia.