Had to look up that simmet thing, ETOPS. Thanks - my horizon has been expanded
I really look forward to the cooler months here in Oz, at least from a flying perspective. Just being able to fly in 23C (and below) rather than 35-40C makes a nice change. From a density altitude point of view we're not usually as badly off as folks in parts of the US, where high terrain and high temperatures really conspire against you and your aeroplane.
Nearly all my pleasure flying in summer is done in the early morning, before it gets too hot and the atmosphere starts to get lumpy. Might as well be in the office (or preferably at the beach) then.