yeah but at least your nice and cool in summer on the south side Paul
and get plenty of rain - I wonder do many cities have such radical different temp. max's and min's climates ie elizabeth/gawler can be 5º warmer than the south side in summer (Adelaide sprawls for 90 klm N-S) . I have often thought about immediate local conditions affecting seeing just as much as jetstreams ect. In my case I am in a built up area with a lot of concrete/bituman/gravel/tin roofs (with no lawn to speak of) which on warm to hot days of course absorbs the heat and radiates it all night!! So it can be hard to tell if bad seeing is caused by local conditions or the sky conditions. I have found when visiting friends just having a small amount of lawn makes the world of diff in seeing!
I can tell you a lot about the local hills - on one side it can total cloud and on the other side it is totally clear
same with wind. I have observed a few times from the hills near you years ago ie bridgewater and Blackwood and I dont like the average local conditions up there very much at all - specially in the hollows - to much fog for one thing. to many tree's as well, even if it is darkish. Give me the rain shadow country anytime, Slice is actually really is in paradise - he's not exaggerating there - but being on TOP of the hills is better again - the softly undulating mount lofty ranges actually steadies the seeing for the prevailing northerlies - there is a name for that effect, i cant remember it tho - and they look for that effect when building observatories i have read.