The frontal system which caused so much damage in Australia is pushing northwards over the country during the day, meaning heavy rain at times for parts of New Zealand.

On the West Coast of the South Island, heavy rain falls at times, with possible thunderstorms, before easing in the evening.
The east coast of the island sees high cloud, and a few spots of rain at times, before breaking to a mainly sunny afternoon.
Winds gust from the northwest in the afternoon, however, perhaps strong for some – especially Canterbury & Marlborough.
Marlborough may even see gales at times from afternoon onwards, before easing off later in the day.
Areas of rain for Marlborough clear in the afternoon, and at that point wind will pick up once rain clears.

For the North Island, showers then rain in the west eases later in the day & overnight.
In Northland, it stays fairly dry for much of the day, then showers move in late in the evening, along with westerlies.
On the East Coast, high cloud along with the odd shower is possible, though showers are more likely in the evening, while winds from the northwest blow strongly about the Wairarapa.

– Aaron Wilkinson & Drew Chappell, WeatherWatch.co.nz