Weather information for Perth: 7 day weather forecast

Effective as of 10:00 AM Tuesday December 21 2021

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

Explanatory notes:

Elevated convection has developed with instability aloft ahead of an upper level trough, contracting away in the afternoon. Then generally fine conditions with afternoon sea breezes over the next few days with the subtropical high pressure ridge to the south.

An unusually intense heatwave is likely to develop from Friday and through the Christmas period with the longest December 40+°C spell on record likely with a very hot air mass over the region as the west coast trough deepens offshore, also suppressing the sea breeze. Temperatures could even be hotter than currently forecast as the current forecast is a little conservative taking into account uncertainty this far out. Perth's longest December 40+°C spell on record was 3 consecutive days in December 2019. Prior to December 2019, 3 consecutive 40+°C days was underheard of in December.

Tuesday December 21:

City:

18-30 Degrees Celsius

Possible morning shower or thunderstorm.

Chance of any rain:30%

Amount:0 to 1 mm

Perth Metropolitan Area:

Partly cloudy with a slight(30%) chance of a shower or thunderstorm most likely over southern suburbs becoming sunny in the afternoon.Winds south-southeasterly at 10-20 km/h tending southwesterly at 20-30 km/h in the afternoon and evening.

Wednesday December 22:

City:

18-32 Degrees Celsius

Mostly sunny.

Chance of any rain:5%

Amount:Nil

Perth Metropolitan Area:

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

Thursday December 23:

City:

20-36 Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Mostly sunny.Very hot inland.Winds east-southeasterly at 15-5 km/h tending south-southwesterly a 20-30 km/h in the afternoon and evening becoming southeasterly at 20-30 km/h later at night.

Friday December 24:

City:

22-39 Degrees Celsius

Very hot and mostly sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Very hot and mostly sunny.Winds easterly at 20-30 km/h tending south-southwesterly at 20-30 km/h in the afternoon.

Saturday December 25:

City:

24-43 Degrees Celsius

Very ho ho hot and mostly sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Very ho ho hot and mostly sunny.Winds east-northeasterly at 20-35 km/h tending northeasterly at 10-20 km/h in the afternoon, easterly at 20-30 km/h at night.

Sunday December 26:

City: