A northwesterly airflow builds over the South Island on Tuesday, a ridge of high pressure lies over the North Island.

Mostly sunny for the upper North Island on Tuesday, areas or low cloud or fog possible in the morning however then clearing. Morning cloud in the east breaks to a mostly sunny afternoon, east to northeast winds. Mostly sunny for the lower western North Island with some high cloud.

Cloudy for South Westland, some rain or showers about Fiordland. North of about Greymouth sees sunnier skies. Sunny areas and some high cloud in the east.

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz