March was colder, cloudier and wetter than average for most of the country, according to Niwa's national climate summary.
Temperatures were "well below average" (by 1.2C) for the east and south of the South Island, as well as Wellington, Wairarapa, southern Hawke's Bay, Central Plateau, and below average for the rest of the country, apart from Westland and Fiordland.
The nation-wide average temperature last month was 14.6C (1.2C below the 1971-2000 March average).
The highest temperature was 29.2C in Timaru on March 24, while the lowest was -2.6C recorded at both Lake Pukaki on March 26 and Hanmer Forest on March 9.
Rainfall was double the March average for Northland, north Auckland, Gisborne, southern Hawke's Bay and Wairarapa.