InfoGraphic: The Big Picture for Wednesday

A north to northwest airflow lies over New Zealand on Wednesday with a southwest change hitting the lower South Island around midday, reaching the upper South Island around midnight.

Areas of rain or showers for western New Zealand on Wednesday south of about Waikato, precipitation more persistent for the South Island's West Coast. Mainly dry in the east however a cool southwest change moves into Southland around midday reaching Canterbury in the evening bringing rain or showers.

By Weather Analyst Aaron Wilkinson -