Northwesterlies build on Tuesday then a front moves onto the South Island in the afternoon reaching the lower North Island overnight.

A settled start for much of the North Island on Tuesday, some cloud builds in the west from afternoon, perhaps a light shower or two Waikato southwards in the west. Mainly sunny weather in the east.

Showers for the South Islands West Coast, heavy rain about South Westland slowly moves northwards during the day. Mainly dry in the east then rain / showers moves into Southland around midday, Otago during the afternoon and Canterbury in the evening.

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz