An anticyclone lies over the South Island today meanwhile a south to southeasterly airflow gradually eases over the North Island.

Northland, Auckland, Waikato & Bay Of Plenty
A sunny day with light southeaterly winds. Some cloud and a shower or two is possible about the outer Coromandel and Great Barrier Island for a time.
Highs: 16-18

Western North Island (including Central North Island)
Any morning cloud clears then mostly sunny, southeasterly winds.
Highs: 12-16

Eastern North Island
Mostly cloudy with occasional showers, clearing Wairarapa in the afternoon, Hawkes Bay in the evening then Gisborne overnight. Cool south to southeasterly winds.
Highs: 13-15

Wellington
A mix of sun and cloud, skies becoming clear by evening. Southeasterly breezes.
High: 13

Marlborough & Nelson
Mostly sunny weather, some coastal cloud about Marlborough breaks away in the morning. There may be a little cloud develop about inland ranges / hills in the afternoon. Light winds tend onshore in the afternoon.
Highs: 13-15

Canterbury
Mostly cloudy then breaking during the afternoon to mostly sunny weather, east to northeasterly winds.
Highs: 12-13

West Coast
Mostly sunny with light winds, some cloud may move into coastal areas in the evening. Also watch for some mist or fog morning and night about some inland areas, inland Buller is a good candidate for this.
Highs: 14-15

Southland & Otago
Mostly sunny, there may be a touch of high cloud. Watch for areas of mist or fog morning and night about inland areas. Coastal Otago has some morning cloud then breaking to a mostly sunny afternoon. Light winds.
Highs: 10-12

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz