7 day weather forecast

Effective as of 4:00 AM Tuesday May 11 2021

Explanatory notes:

Warm afternoon today with the warm air mass over the region with warm air advection with the high pressure system in the Great Australian Bight.

High and middle level clouds ahead of an upper level trough.

A weakening cold front moves over the region from the south early on Wednesday bringing the possibility of showers.

The strong high pressure ridge builds to the south thereafter 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.

Tuesday May 11:

City:

12-27  Degrees Celsius

Partly cloudy.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.High clouds.Winds northeasterly at 15-25 km/h becoming north-northwesterly at 10-20 km/h in the early afternoon and light in the afternoon.

Wednesday May 12:

City:

14-23  Degrees Celsius

Shower or two.

Chance of any rain:50%

Amount:0 to 2 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A medium(50%) chance of showers most likely in the morning.Light winds becoming southeasterly at 15-25 km/h in the morning becoming east-southeasterly at 20-30 km/h in the afternoon.​

Thursday May 13:

City:

9-21  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:

11-23  Degrees Celsius

Partly cloudy.

Chance of any rain:10%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Winds easterly at 20-30 km/h eading to east-northeasterly at 15-25 km/h in the afternoon.

Saturday May 15:

City:

13-23  Degrees Celsius

Mostly cloudy.

Chance of any rain:10%

Amount:Nil

Perth Metropolitan Area:

Mostly cloudy.Winds east-northeasterly at 20-30 km/h.

Sunday May 16:

City:

14-23  Degrees Celsius

Mostly cloudy.

Chance of any rain:10%

Amount:Nil

Perth Metropolitan Area:

Mostly cloudy.Winds northeasterly at 15-25 km/h.

Monday May 17:

City:

14-24  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.

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).