The following WX chart is hand-drawn (so a little hard to read at times), but it provides a very accurate "current" assessment of the weather systems coming our way (the best I've found) . It is updated about 4 to 6 times daily, except Sunday. Hashed areas are substantial rain.
Provided by the Australian Bureau of Meteorology. Click the image to open it in a blank new window for printing.
James McGregor of Victoria University (School of Earth Sciences), Wellington, provides prognosis charts for the NZ region for the next 180 hours (at 6hr intervals).