Saturday has dawned cool to cold over much of the country with some heavy frosts in southern areas.

Dunedin airport is the coldest with minus 4 degrees but a number of centres have gone below freezing point this morning.

Much of the South Island and lower parts of the North Island should see a fine and sunny day but cloud is expected to build in the north with winds rising.

Main centres

Auckland  4

Hamilton  3

Tauranga  4

Wellington  8

Christchurch  -2

Dunedin airport  -4