A strengthening northerly airflow lies over New Zealand today, a front moves onto the lower South Island this afternoon then slowly moves northwards.

Mainly dry for the North Island on Tuesday, a shower or two possible about some extremities. The east coast once again is mainly sunny.

Heavy rain for the West Coast of the South Island, torrential falls possible especially south of Greymouth. Mainly dry in the east with thick high cloud, rain moves into Southland around midday then pushes into Otago during the afternoon. Northerly winds will be a bit blustery especially about the alps where winds may gust to gale at times.

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz