Officially, Phillip Island is designated by the Australian wine industry to be part of the Gippsland Wine Region. This is not a particularly useful or meaningful designation.
Gippsland is so large, it encompasses a number of distinct climatic sub-regions. Phillip Island does not really fit within any of these.
Industry standard measures of warmth over the growing season indicate that Phillip Island is 10 to 15 per cent warmer than most of South and East Gippsland and of the elevated parts of the Mornington. Unsurprisingly, its climate is very similar to the coastal parts of Mornington Peninsula.
Thus, on our labels you will see Gippsland, but viticulturally we are a more like the warmer sites on the Mornington Peninsula.