A large high continues to sit out to the east of the country on Wednesday while a warm northeasterly airflow flows over New Zealand. Unstable conditions may develop about the inner South Island in the afternoon.

A mix of sun and cloud for the upper North Island, cloud may be thicker in the morning with the chance of a light shower for eastern coastal areas. Northland has slightly more cloud with the odd light shower possible for much of the day, especially in the east. East to northeasterly breezes.

A mix of sun and cloud for the lower western North Island, may be an isolated shower late afternoon / evening for inland areas otherwise mainly dry. Light winds and afternoon sea breezes. Mostly sunny along the east coast after any morning cloud breaks away, northeasterly winds. Mostly sunny in Wellington with northerly winds.

Sunny or mostly sunny about Nelson and Marlborough with north to northwesterly winds. Mostly sunny in Canterbury, for inland areas isolated showers develop late afternoon / evening. Some may become heavy with thunderstorms then clearing later on. East to northeasterly winds.

Mostly sunny along the West Coast, some cloud about Buller with the low risk of an isolated shower late afternoon / evening. Light northerly quarter winds. Mostly sunny about Southland and Otago, chance of an isolated shower late afternoon / evening for inland areas with the chance of a thunderstorm. Light winds, afternoon sea breezes.