Summers go from about October/November through to April.
By May even with our glorious Indian summers there is a noticeable change in the evening temperatures and much shorter daylight hours.
Winter kicks in by June through to late August. Can be very rainy and with wintry squalls. Remember there is nothing south of Australia but the Southern Ocean, penguins and Albatrosses - then Antarctica.
As all the weather systems come up from the south it can get pretty cold, wet and miserable for us here.
We whinge and complain when the day time temperatures fall to as low as 12/13C (53-55F). No snow, but plenty of overnight frosts -4 - -2C (24-28F).
I know we're whimps. We rug up in trackies, jackets, beanies and our famous ugg boots. Even the Longjohns come out.
Meanwhile though the tropical north is in the dry season and the grey nomads all get their cars and caravans out to travel to the far north tropical paradise.