7 day weather forecast

 Effective as of 12:00 AM Saturday January 22 2022

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

Explanatory notes:

A prolonged heatwave with the very hot air mass over the region as the west coast trough remains near the west coast, with enhanced heating from subsidence below the upper level anticyclone aloft.

There is a significant chance that Perth will see 5 consecutive days with maximum temperatures above 40°C (depending on the maximum temperature today) which will be Perth's longest 40°C and above spell on record. Prior to December 2021, Perth has never seen 4 or more consecutive 40°C days outside of February. The longest 40°C and above spell on record was 4 consecutive days in February 1933, February 2016 and December 2021. Perth's highest number of 40°C days in a month on record was 5 days in December 2021.

There is also a chance, depending on the maximum temperature on Sunday, which is dependent on how early the sea breeze onset is, that Perth will see 6 consecutive days with maximum temperatures at or above 38°C, which is the longest on record and was seen in December 2021.

Some respite next week as the upper level anticyclone is dislodged by an upper level trough and slightly cooler air moves in from the southeast. It will likely still be hot during the day with the west coast trough remaining offshore, cooler nights with cool air advection from the southeast and significant radiational cooling of dry air.

Saturday January 22:

City:

24-40  Degrees Celsius

Very hot and sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Very hot and sunny.Winds east-northeasterly at 10-20 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.

Sunday January 23:

City:

23-38  Degrees Celsius

Very hot and sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Very hot and sunny.Winds easterly at 10-20 km/h shifting northeasterly by morning shifting south-southwesterly at 20-35 km/h by afternoon.

Monday January 24:

City:

18-33  Degrees Celsius

Becoming sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

A few clouds possible early, otherwise sunny.Winds south-southeasterly at 20-30 km/h.

Tuesday January 25:

City:

17-31  Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Mostly sunny.Winds east-southeasterly at 20-30 km/h tending southeasterly at 15-25 km/h in the afternoon.

Wednesday January 26:

City:

17-31  Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Sunny.Winds east-southeasterly at 15-25 km/h tending south-southwesterly at 20-30 km/h in the afternoon and evening

Thursday January 27:

City:

18-33  Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Mostly sunny.Winds east-southeasterly at 20-30 km/h tending south-southwesterly in the afternoon.

Friday January 28:

City:

17-34  Degrees Celsius

Mostly sunny.

Chance of any rain:5%

Amount:Nil

Perth Metropolitan Area:

Mostly sunny.Winds east-southeasterly at 20-30 km/h tending southeasterly at 10-20 km/h in the afternoon.

Charts:

Figure1.

Figure 2.

Figure 3.

Figure 4.

No liabilities held. Some information on this site is sourced from the Australian Bureau of Meteorology. Weather icons are from the National Weather Service.