7 day weather forecast

Effective as of 12:00 AM Thursday May 6 2021

Explanatory notes:

Some isolated showers streaming from the west in the moist and unstable onshore flow. A band of low level wind convergence near the coast can also act as a focus for shower activity overnight.

From late morning today, a surface trough ahead of an upper level trough brings showers with possible thunderstorms. 

After the trough moves to the east, some showers streaming from the southwest until Friday morning in the moist cool air mass with the slight chance of a thunderstorm (most likely offshore) with the cold pool aloft.

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

The slight chance of fog early on Saturday and Sunday with light winds radiational cooling of moist air, also the slight chance early on Friday if skies are sufficiently clear and winds are sufficiently light given moist low level air and moist soils from earlier showers.

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

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Thursday May 6:

City:

14-22  Degrees Celsius

Showers.Possible thunderstorm

Chance of any rain:100%

Amount:5 to 12 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A very high (100%) chance of showers.The chance of a thunderstorm most likely from around the middle of the day.Winds north-northwesterly at 5-15 km/h becoming westerly in the afternoon, southwesterly at night.

Friday May 7:

City:

11-22  Degrees Celsius

Possible early shower.

Chance of any rain:30%

Amount:0 to 0.4 mm

Perth Metropolitan Area:

Partly cloudy. A slight (30%) chance of showers early most likely near the coast.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: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.

Sunday May 9:

City:

9-22  Degrees Celsius

Partly cloudy.

Chance of any rain:10%

Amount:Nil

Perth Metropolitan Area:

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

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:

11-25  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:

12-22  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

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).