A northwesterly airflow lies over most of New Zealand on Wednesday, a front pushes onto the lower South Island later in the afternoon bringing in a cool change.

Wednesday starts to see a building northwesterly airflow, this brings some cloud to the western North Island while elsewhere stays mainly sunny.

Cloudy for the West Coast of the South Island with heavy rain for Fiordland pushing northwards overnight, mainly dry in the east with warm temperatures and some high cloud. Showers gradually move into Southland and Otago as cool southwesterlies develop late afternoon / evening.

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz