7 day weather forecast

 Effective as of 4:00 PM Thursday May 6 2021

Explanatory notes:

A surface trough ahead of an upper level trough brought showers and isolated thunderstorms today.Further showers and isolated thunderstorms possible for the rest of today in the moist and unstable flow but are less likely/more isolated compared to earlier.

Showers likely contracting to coastal areas overnight as the upper level trough moves to the east and surface winds turn southeasterly with land breeze development with low level wind convergence offshore acting as a focus for shower development., showers should lie offshore by morning.

The chance of fog early tomorrow with light winds and radiational cooling of moist air with moist soils from today's rain, fog development depends on how much cloud cover clears overnight.

Ridge of high pressure builds to the south  leading to fine conditions.

Warmer afternoons early next week with warm air advection as the high moves into the Great Australian Bight.

As usual, some uncertainty on the precise conditions towards the end of the forecast period with variation between models and model ensembles.

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The rest of Thursday May 6:

City:

Possible shower or two.

Chance of any rain:40%

Perth Metropolitan Area:

Partly to mostly cloudy.A medium (40%) chance of showers.The slight chance of a thunderstorm.Winds westerly at 10-20 km/h becoming south-southwesterly by night, light later at night.

Friday May 7:

City:

11-22  Degrees Celsius

Partly cloudy.

Chance of any rain:20%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy. A slight (30%) chance of showers near the coast early, a slight(20%) chance elsewhere.Winds southeasterly at 10-20 km/h tending south-southwesterly at 15-25 km/h in the afternoon.

Saturday May 8:

City:

9-22  Degrees Celsius

Partly cloudy.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Light winds tending south-southwesterly at 10-20 km/h in the afternoon, south-southeasterly at night.

Sunday May 9:

City:

9-22  Degrees Celsius

Partly cloudy.

Chance of any rain:5%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Light winds tending south-southwesterly at 10-20 km/h in the afternoon, south-southeasterly at night.

Monday May 10:

City:

10-24  Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Sunny.Winds easterly at 10-20 km/h becoming light int he afternoon.

Tuesday May 11:

City:

11-24  Degrees Celsius

Partly cloudy.

Chance of any rain:5%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Winds northeasterly at 10-20 km/h becoming light in the afternoon.

Wednesday May 12:

City:

13-23  Degrees Celsius

Partly cloudy.

Chance of any rain:20%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.A slight(20%) chance of a shower.Winds south-southeasterly at 15-30 km/h.

Thursday May 13:

City:

10-21  Degrees Celsius

Partly cloudy.

Chance of any rain:10%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Winds east--southeasterly at 15-30 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).