Heavy rain and strong wind could dampen New Year's Eve celebrations on the West Coast and around Wellington.
MetService has issued a severe weather warning for parts of both regions, as a front approaching the South Island moves over the country over the next 48 hours.
Downpours are forecast for Westland, Buller and the Tararua Range, with severe north-west gales expected about Wellington and Wairarapa.
The heaviest falls are expected about Westland and Buller today and tomorrow, then the Tararua Range from Sunday afternoon to Monday morning.
MetService advised people in the affected areas, especially trampers, that rivers and streams could rise rapidly.
Further north, sunshine abounds. Gisborne held the high for much of Saturday, sitting at about 26°C in the afternoon.
On New Year's Day, Christchurch is tipped to be the hot spot.
Meanwhile, 2016 is expected to be the hottest year on record.
International scientists say global warming is being felt on land, in the atmosphere and in the oceans, with potentially negative consequences for the future of the planet.