7 day weather forecast

Effective as of 4:00 PM Thursday August 6 2020

Explanatory notes:

Plenty of high and middle level clouds on Friday and Saturday ahead of a upper level trough, on Sunday a strong cold front moves through bringing strong winds, plenty of rain, showers with thunderstorms also possible with atmospheric instability.

On plenty of showers with the cold and unstable air mass behind the cold front with tight pressure gradients also leading to slightly strong winds, with the cold pool likely aloft, also possible small hail.

On Tuesday also plenty of showers streaming from the southwest in a cold air mass but subsidence inversion aloft likely caps the convection preventing thunderstorm development.

Thursday August 6:

City:

6-18 Degrees Celsius

Partly cloudy.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Winds east-southeasterly at 10-20 km/h.

Friday August 7:

City:

5-18 Degrees Celsius

Partly cloudy.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Winds east-northeasterly at 10-20 km/h.

Saturday August 8:

City:

8-21 Degrees Celsius

Partly cloudy day.

Chance of any rain:30%

Amount:0 to 0.4 mm

Perth Metropolitan Area:

Partly cloudy day.A slight(30%) chance of showers at night.Winds northeasterly at 25-40 km/h

Sunday August 9:

City:

12-18 Degrees Celsius

Showers,rain.Possible thunderstorm.Windy.

Chance of any rain:100%

Amount:15 to 30 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A very high(100%) chance of showers,rain.The chance of a thunderstorm.Winds northeasterly at 25-40 km/h shifting northwesterly at 30-45 km/h from afternoon.Gusty winds possible.

Monday August 10:

City:

10-17 Degrees Celsius

Windy with showers.Possible thunderstorm.

Chance of any rain:100%

Amount:10 to 30 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A very high(100%) chance of showers.The chance of a thunderstorm.Winds west-northwesterly at 30-45 km/h shifting west-southwesterly during the day.Gusty winds possible.

Tuesday August 11:

City:

11-17 Degrees Celsius

Showers.

Chance of any rain:90%

Amount:1 to 4 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A very high(90%) chance of showers.Winds southwesterly at 20-30 km/h.

Wednesday August 12:

City:

10-18 Degrees Celsius

Showers.

Chance of any rain:70%

Amount:1 to 4 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A high(70%) chance of showers.Winds west-southwesterly at 10-20 km/h.

Wednesday August 12:

City:

10-18 Degrees Celsius

Showers.

Chance of any rain:70%

Amount:1 to 4 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A high(70%) chance of showers.Winds west-southwesterly at 10-20 km/h.

Thursday August 13:

City:

9-19 Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 1 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A slight(30%) chance of showers.Light winds.

Charts:

Figure 1.Surface synoptic chart at 00 UTC(8 AM local time today).Image courtesy of the Australian Bureau of Meteorology(BOM). 

Figure 3.Key features identified on True Colour RGB satellite image at around 06:00 UTC(2 PM local time today).Satellite image courtesy of the Japanese Meteorological Agency(JMA).

Figure 3.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image at 00 UTC(8 AM 
local time today).Image courtesy of the Australian Bureau of Meteorology(BOM).

Figure 4:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM)
Some data on this site is sourced from the Australian Bureau of Meteorology(BOM).