A southwesterly airflow lies over New Zealand on Wednesday, potentially becoming unstable for Buller and some parts of the upper North Island in the afternoon.

Conditions may be dry in the morning for most of the upper North Island on Wednesday however isolated showers move in during the afternoon, isolated heavy falls possible for southern parts of Auckland and Waikato. Sunny spells in the east, risk of a shower. Wellington is mostly cloudy with any morning showers clearing, some sun may break through from afternoon.

Mostly sunny for the West Coast, isolated showers develop for Buller in the afternoon. Mostly cloudy for Canterbury through to Nelson, Nelson has the odd shower. Morning cloud clears Southland and Otago then becoming mostly sunny.

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz