Why is Gisborne's weather so special for producing consistant favoursome grapes/Wine?

Here is a snip of the coming weather prediction for Gisborne. Different to other areas, Gisborne overnight temperatures rarely drops below 10°C from now until harvest. The vines do not slow down metabolising overnight as a result which would happen if temperatures drop below 10°C. Gisborne has been know to produce aromatically flavoursome wines that have lower sugar levels so hence lower alcohol levels. Better for you!