Sal and Fashintern - the climate where I live (city of Perth) is a Mediterranean climate so hot dry summers and cool wet winters. December is the coolest summer month. My office is air conditioned and my office is freezing every morning (it warms up a bit in the afternoon) so a jacket / sleeves are required at work. All the men wear formal suits, so the temperatures are set so that they are comfortable and I tend to run cold.
At home we only have the air con on during very hot days as usually even the hottest day will cool down in the evening due to ocean breezes that blow up from the Great Southern Ocean - we call the afternoon sea breeze the Fremantle Doctor. I wear jean on days when it is about 30C and below, above that and I will wear a sun dress or playsuit on my non-work days. So far this summer Perth has had beautiful sunny days with average temps of about 30C. Sydney and Melbourne have had much hotter weather than us which is unusual, but February is traditionally our hottest month, so the very hot weather is yet to come. However, I will be quite happy working and so my work clothing will stay the same although on the hottest days I am likely to have bare legs and sandals rather than hosiery and closed in shoes.