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Are you sure about the lower rainfall/snowfall? At 50 degrees the Auckland Islands experience around 1500mm of rainfall and even on Macquarie Island at 54 degrees there is still close to 1000mm. I'd imagine that with NZs mountain ranges the rainfall would actually increase even from those numbers?
The Auckland Islands and Campbell Island also receive around 320 days of rainfall a year at sea level, which is many more days than the wettest NZ mainland sea level site.
That low ratio of rainfall to rain days indicates that while rain bearing fronts are more frequent, they provide less moisture - as would be expected when both air and ocean temperatures are a few degrees cooler.
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Cities like Arrowtown and Queenstown woulbe be unliveabe due to cold and snowy year round climate,we know that climate in southern hemisphere is different due to the strong influence of cold southern ocean and proximity with antartic! another question is about south america being moved 10 degrees south,we should have a continental climate like theses in eastern europe,our temperate area would be greater with southern brazil receving a lot of snowfall even in low elevations! amazing!
Even at 4C colder, Alexandra would still just qualify as semi-arid, so for it to be humid,it would have to be wetter.
All I said was that if NZ were 10 degrees more southernmost Alexandra would be close to subarctic. The subarctic climate zone is usually dry. I don't know about 4C colder - Since Alexandra is more "continental", the temp drop might be more dramatic at a 10 degree shift.
The coastal cities, though, would still remain oceanic or at least subpolar oceanic at the southern fringe (i.e. Dunedin).
well Macquarie Island 55°N doesn't even reach 50°F/10°C in the summer so I would say the southern coast from Dunedin 45°N southward would definitely be a full-fledged maritime influenced Polar climate. the northern half of the southern island would be Subpolar much like Iceland and supporting forests. The northern island would be a standard fare Oceanic climate like Scotland or Northern Ireland (but with more rain). Cape Reinga would probably be like Valentia Island, Ireland. Valentia Island - Wikipedia, the free encyclopedia
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