A large high sits out to the east today directing a warm humid northerly airflow over New Zealand. A weak ridge of high pressure stretches out over New Zealand on Wednesday, mainly settled however unstable conditions may develop for some North Island areas during afternoon.

A mix of sun and cloud for the North Island today with humid northerly quarter winds, mainly dry in the morning apart from the odd shower for Taranaki through to Wellington. During the afternoon the odd isolated shower develops anywhere from Waikato southwards then easing overnight. Some rain or showers for the West Coast of the South Island. Sunny areas and some high cloud out east, isolated showers develop late afternoon / evening about inland Southland / Otago and perhaps South Canterbury, some may become heavy with thunderstorms then easing overnight.

A mix of sun and cloud for the North Island on Wednesday, there may be a morning shower about East Cape / Gisborne / Taranaki and Kapiti then clearing away. Isolated showers late afternoon / evening about Waikato, Bay Of Plenty (especially inland) and the ranges of Gisborne / Hawkes Bay. These showers may become heavy with thunderstorms then easing overnight. Mostly sunny for the upper South Island, some cloud the further south you go. A few showers along the West Coast, Southland and Otago ease during the day, mainly dry by evening.

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz