New figures show last year was New Zealand's seventh warmest on record.
File photo. Photo: RNZ / Liz Garton
NIWA has released its annual climate summary for last year and shows the nationwide average temperature was 13.24C, 0.63 degrees above the 1981-to-2010 annual average.
The hottest year on record is 2016, when the nationwide average was 13.45C.
Six of the past eight years have been among New Zealand's warmest on record.
The highest temperature of 2020 was recorded on 31 January at Gisborne, reaching 38.2C, the fifth highest January temperature on record.
Record low rainfall was experienced in parts of Auckland. Photo: NIWA
Several locations had dry spells of at least 40 days - a 64-day dry spell was recorded in Blenheim.
That lasted from 20 December 2019 to 21 February 2020, making it the longest dry spell on record at the town.
The Niwa figures show temperatures were well above averages. Photo: NIWA
Winter was much wetter than usual in northern parts of the North Island, when soil moisture levels returned to near normal after dry patches earlier in the year.
Several ski areas in Canterbury struggled to operate throughout the season due to a lack of snow.
That was as a result of abnormally warm temperatures, with New Zealand observing its warmest winter on record.
The NIWA records began in 1909.