A cold front is crossing the Tasman Sea towards western New Zealand on Tuesday after blasting Australia with wind and rain.
"The next surge of westerlies arrives over Tuesday and Wednesday and brings with it a few cold fronts and more wet weather," says Weather Watch head analyst Philip Duncan.
"As a front sweeps northwards over New Zealand on Wednesday expect heavy rain for the West Coast of the South Island to ease from the afternoon, rain may become heavy about Taranaki in the afternoon then easing there in the evening."
But there is good news - there will be much warmer than average and mainly dry weather in the east.
"North to north-west winds bring warmth to the country today and tomorrow, especially for the eastern side of both islands," Mr Duncan says.
"Maximum temperatures in Tuesday and Wednesday will be significantly higher than usual, by several degrees."
By the weekend a large high but short lived high will cross the country, with windy Nor'Westers arriving in the South Island on Sunday - which Mr Duncan says will really boost temperatures in the east.
Westerlies look set to blow through much of next week also.
Newshub.
