OK if you like cold weather Milo. Wind blows up from snow-covered mountains in winter.

Cheers,
xina.

Depends on what you are going to do, visit friends or relatives, travel north from there?

I have travelled across the Nullabor in June and it was quite pleasant and cool, and green as well.  However, it is not a good time to go south as you get very heavy rain and it will be cold and miserable, Perth included.  And like anywhere in Australia, on the south coast there will be lots of rain and along the south coastline you will be getting the cold winds coming up from Antartica.

What William said is best time for Perth City.

If you are going to travel north in WA, it would be a good time, although I would be inclined to leave earlier around May but not as late as October.  Nowra where you live is roughly about the same latitude as the south coast of WA, think of the weather where you are, would you travel south in NSW in winter time?

Most of Australia is the same on similar or close to Latitudes, for the good weather go north in the winter months and south in the summer months.  leaving around April/May from where you are, I would go north along the east coast and around the top of Oz, coming down the west coast to Perth around September/October (wildflower season too), or the same leaving time go up the centre of Oz from SA, working your way around the top to the West coast, heading south again Sep/Oct, or if you do go via Perth come over April/May and then head north along the west coast and around the top.

Here is a link for WA that has most of the info you will need to plan your trip on the west coast, see;  http://www.westernaustralia.com/au/Pages/Welcome_to_Western_Australia.aspx 

All of the States tourism departments will have similar links.

Hope this helps.

Hi Milo.

We live in Bunbury WA and, it can get hot here in summer, not as hot as some places though.  We are generally 2 - 3 degrees cooler than Perth in summer.

Winter can be cool and sometimes COLD.  Albany is usually much colder and wetter than Bunbury in winter.

Saying all that, Spring or Autumn are by far the best by far times to see the SW of WA.

If you planned to go to the Kimberly area (note: singular, there is only one Kimberly ) then March to Sept - October, not only because the temperature and humidity are more comfortable but it is also the 'Off' cyclone season.

Cheers Neil

G'day Xina,I was joking about perth, scotland.William the third is my forum name but it is just plain old Bill, or "blinky bill" as my friends call me.

OK Bill,
Cheers,
xina.