A front was forecast to move on to the far south of the country from the west overnight on Tuesday.
The front would become slow moving on Wednesday with low confidence, 20 per cent chance, of rain reaching warning amount in southern Fiordland.
On Thursday, the front is expected to move north across the country and weaken.
Your weather
Whangārei : Mainly fine, but chance shower from afternoon. Light winds. High 19C Low 8C
Auckland: Fine. Light winds. High 19C Low 9C
Tauranga: Fine with light winds. High 18C Low 7C
Whanganui: Chance early frost, then cloudy periods. Light winds. High 16C Low 7C
Napier: Fine with a frosty start, then evening cloud. Southerlies gradually dying out. High 19C Low 5C
Wellington: Often cloudy, but longer afternoon fine spells. Northerlies, but southerly for a time afternoon and evening. High 15C Low 8C
Christchurch: A fine start then partly cloudy. Southerly breezes. High 15C Low 3C
Dunedin: Partly cloudy. Southwesterlies. High 14C Low 7C