A west to southwesterly airflow lies over New Zealand on Wednesday, becoming unstable for the eastern South Island in the afternoon.

A few patchy showers for the western North Island on Wednesday, clearing in the evening for most although the odd one may hang about Northland till overnight. Mainly dry in the east with some high cloud, late afternoon or evening southerlies may bring some lower level cloud and the risk of a shower.

Occasional showers for the West Coast of the South Island, clearing evening. The odd shower for the south and east of the South Island, showers may become heavy with hail / thunder in the afternoon then easing evening. Unstable activity mainly Otago Peninsula northwards through into North Canterbury.

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz