Sydney is shivering today while in New Zealand it’s been warmer than average in the upper and eastern north today and colder than average in the lower south as polar air moves in and sub-tropical air moves out for some. In fact Sydney is several degrees cooler than some North Island places this afternoon.

A deepening low in the eastern Tasman Sea off the West Coast is helping alter the polar air flow across the nation – and will do so across the weekend with the southerly injection deepening the low over the North Island on Sunday and stormy conditions possible for some.

West to north west winds continue over the North Island today – blustery at times.

Here’s how things look on Wednesday PM – and note the Antarctic southerly blowing into Sydney, where at the warmest part of the day it’s 12 degrees with a high of 13 today.

– WeatherWatch.co.nz