Frontal zones affect the South Island on Wednesday with heavy rain in the west, northwesterlies for the North Island with mainly settled conditions.

Sunny spells for the west and north of the North Island on Wednesday, sunny and warm out east.

Heavy rain for the West Coast of the South Island, mainly dry in the east with high cloud. Southland and Otago has patchy rain or drizzle.

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz