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Scilly Isles are further north than Victoria and are warmer overall, and even they don't meet Trewartha's definition for "C" climate.. hence not subtropical in my opinion.
Koeppen considers Victoria's temperatures to be firmly maritime. Its summer dry season makes it Mediterranean (Csb in this case). The hottest daily mean of 60F is far below the 72F required for a Cfa/Csa/Cwa climate. It also fails Trewartha's subtropical criterion. Wikipedia's climate table lists 6 months at or above 10C. Trewartha requires 8 or more months above 10C to be subtropical.
Summer: Mean temperature of warmest month above 24°C (75°F).
Winter: Mean minimum temperature above 0°C (32°F) and mean temperature above 7°C (45°) in the coldest month.
On the East Coast, Cape Hatteras with Jan avg high/low of 53/39F, and avg temp for warmest month of 79.5F meets your criteria. I would say up to the VA/NC border coastal areas meets it as well.
This reminds me of this quote from years back (emphasis added by me):
Quote:
Originally Posted by wavehunter007
However, the problem would be that many cities with a long hot season, semi-tropical flora/fauna, and a huge number of growing degree days, would not fall into this zone of 50 F (10 C) for the coldest month. In Europe/Asia, this would put cities like Naples (Italy), Osaka (Japan), and Shanghai (China) not in the subtropics. In the USA, cities like Sacramento, CA, Dallas, TX, or Wilmington, NC would not fall into the subtropics. So it is truly a quagmire - and one that I think is very interesting. I've thought for many years about an answer - but whenever one group of climates that seems not to belong is excluded…other climates that seem to surely belong are also excluded.
According to that definition. Sydney would become "warm temperate". It lacks the warm enough summers. It's still a better definition than the stupid one that has places like NYC being supbtropical
According to my personal definition a place must have both the mild winters and the hot summers to be subtropical. Sydney lacks the latter.
I dont like trewartha's method i find Koppen more reliable and makes more sense see koppen never intended making the Cfa or Csa subtropical he wanted it to mean mesothermal but i would think Victoria is closer to subtropical than Scilly islands reason being is Scilly is pretty much the definition of Oceanic climate where Victoria is clearly a cold summer Mediterranean if you moved over here you would understand, there are some Gulf islands off the coast of the island which can go entire winters without freezing. Victoria's climate is very similar to San Francisco precipitation wise and temperature. Here's a good example of a victoria station Statistics: Victoria Hartland, BC, Canada - The Weather Network
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