Northland: Mainly fine.
Auckland to Wellington, including the Bay of Plenty and central high country: Cloud increasing tonight. Outbreaks of rain from Waitomo to Wellington during Thursday, possibly heavy and thundery Waitomo to Taranaki, patchy drizzle elsewhere.
Gisborne to Wairarapa: Fine at first, but high cloud Thursday, with brief rain at times.
Western Nelson, Buller and Westland: Rain, possibly heavy, easing to scattered showers Thursday morning.
Remainder of Nelson and Marlborough: Period of rain overnight, otherwise mostly fine.
Canterbury and Otago: Mainly fine, but pathcy rain in Canterbury clearing tonight. Some low cloud near the coast Thursday.
Southland and Fiordland: Fine spells, but rain developing in Fiordland Thursday afternoon. Chatham Islands: Cloud increasing. Patchy rain developing Thursday.