A weak area of low pressure in the Tasman Sea is fuelling rain clouds around the South Island with heavy rain on the West Coast with this event potentially dropping over 100mm for some there.

On Friday the system falls apart but will bring more moisture in the air into the North Island and coupled with daytime heating there may be some big downpours popping up inland during the day.

• Wettest weather today is on the West Coast with lighter patchy rain in Canterbury.
• Wettest weather on Friday will be in the ranges of the eastern North Island and the ranges of the upper South Island.

– WeatherWatch.co.nz (an official IBM and TWC Business Partner)