Weather information for Perth: 7 day weather forecast

Effective as of 4:00 PM Sunday December 26 2021

View the latest severe weather warnings from BOM at http://www.bom.gov.au/wa/warnings/ .

Explanatory notes:

With a maximum of 43.5°C at the official Perth Metro station, Perth has seen the second hottest December day on record and the hottest since Boxing Day 2007, when maximum temperatures reached 44.2.°C There was some cloud cover today, in the absence of the clouds, temperatures could have been higher.

Perth has also seen the hottest Christmas Day on record with a maximum temperature of 42.8°C at the official Perth Metro station beating the record of 42.0°C set in 1968. In fact, it was the hottest Christmas Day on record for any Australian capital city and possibly any major city in the world based on maximum temperatures at the official stations.

The previous hottest Christmas Day in an Australian capital city was 42.1°C in Adelaide in 1888, but then Stevenson Screen's weren't widely used yet and so such a record is not directly comparable to modern times.

Very bad fire conditions with such high temperatures and dry easterly winds. Some fires have already flared up this afternoon with the smoke plume even visible on radar.

Easterly winds strengthen again tonight as vertical mixing decreases, gusts in excess of 75 km/h possible over the hills and foothills, with the strong easterly gradient combined with katabatic effect.

Earlier onset of and a more significant sea breeze and the upper level anticyclone being displaced by an upper level trough means that maximum temperatures tomorrow, Tuesday and Wednesday would likely be slightly lower, but still very hot. Some cloud cover also expected to limit maximum temperatures a little tomorrow.

The heatwave ends by Thursday as the west coast trough moves inland with the marine layer advecting onshore.

Sunday December 26:

City:

26-44 Degrees Celsius

Very hot and mostly sunny.

Chance of any rain:5%

Amount:Nil

Perth Metropolitan Area:

Very hot and mostly sunny.Winds east-northeastery at 20-35 km/h becoming northeasterly at 20-30 km/h in the morning easing to easterly at 10-20 km/h in the afternoon with a south-southwesterly sea breeze at 10-20 km/h possible near the coast, becoming easterly at 20-5 km/h at night. Gusts in excess of 80 km/h possible over the hills and foothills early, 75 km/h later at night.

Monday December 27:

City:

27-40 Degrees Celsius

Very hot.Partly cloudy.

Chance of any rain:10%

Amount:Nil

Perth Metropolitan Area:

Very hot.Partly cloudy.Winds east-northeasterly at 20-35 km/h easing to 15-25 km/h in the morning tending south-southwestery in the afternoon becoming southeasterly at 10-20 km/h night.Gusts in excess of 75 km/h possible over the hills and foothills during the early hours.

Tuesday December 28:

City:

Very hot and mostly sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Very hot and mostly sunny.Winds northeasterly at 15-25 km/h tending south-southwesterly at 20-30 km/h in the afternoon and evening becoming south-southeasterly at 10-20 km/h later at night.

Wednesday December 29:

City:

Very hot and sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Very hot and sunny.Light winds becoming northeasterly at 10-20 km/h in the morning shifting south-southwesterly at 20-30 km/h by afternoon, becoming light later at night.

Thursday December 30:

City: