7 day weather forecast

Effective as of 4:00 PM Wednesday May 12 2021

Explanatory notes:

The strong high pressure ridge builds to the south leading to significant east-southeasterly flow becoming more east-northeasterly then northeasterly from the weekend as the high pressure system moves into the Great Australian Bight. During this period, upper and middle level moisture ahead of a cut off low in the Indian Ocean leads to high and middle level clouds over the region with possible virga and the slight chance of showers.

A cold front possibly moves over the region on Tuesday but plenty of ucnertainty at this stage with variation between model and model ensembles.

The rest of Wednesday May 12:

City:

Partly to mostly cloudy.

Chance of any rain:0%

Perth Metropolitan Area:

Partly to mostly cloudy.Winds east-southeasterly at 20-30 km/h.

Thursday May 13:

City:

10-21  Degrees Celsius

Partly cloudy.

Chance of any rain:5%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Winds east-southeasterly at 20-30 km/h easing to 15-25 km/h in the afternoon.

Friday May 14:

City:

12-22  Degrees Celsius

Mostly cloudy.

Chance of any rain:20%

Amount:Nil

Perth Metropolitan Area:

Mostly cloudy.A slight(20%) chance of a shower.Winds east-northeasterly at 20-30 km/h.

Saturday May 15:

City:

14-23  Degrees Celsius

Mostly cloudy.

Chance of any rain:20%

Amount:Nil

Perth Metropolitan Area:

Mostly cloudy.A slight(20%) chance of a shower.Winds northeasterly at 20-30 km/h easing to 15-25 km/h in the afternoon.

Sunday May 16:

City:

15-24  Degrees Celsius

Mostly cloudy.

Chance of any rain:20%

Amount:Nil

Perth Metropolitan Area:

Mostly cloudy.A slight(20%) chance of a shower.Winds northeasterly at 15-25 km/h.

Monday May 17:

City:

16-26  Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 4 mm

Perth Metropolitan Area:

Partly cloudy.A slight(30%) chance of showers.Winds northeasterly at 15-25 km/h hsifting northwesterly later during the day,

Tuesday May 18:

City:

15-24  Degrees Celsius

Showers.

Chance of any rain:70%

Amount:2 to 8 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A high(70%) chance of showers.Winds northwesterly at 10-25 km/h.

Wednesday May 19:

City:

13-23  Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 1 mm

Perth Metropolitan Area:

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

Charts:

                                   

Figure 1.Surface synoptic chart.Image courtesy of the Australian Bureau of Meteorology(BOM).

 2. 

Figure 2.Key features identified on True Colour RGB satellite image.Satellite image courtesy of the Japanese Meteorological Agency(JMA).

Figure 3.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image. Image courtesy of the Australian Bureau of Meteorology(BOM)

Figure 4:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM).

No liabilities held from information consumed on this site. Weather icons are from the US National Weather Service.Some information on this site is from the Australian Bureau of Meteorology (BOM).