Last winter was the sixth consecutive year when the average seasonal temperature in Ireland was above its long-term average, according to the latest climate statement from Met Éireann.
The statement said the winter was mild everywhere with a national mean temperature of 6.58C from December to February.
This made it the 20th warmest winter since 1900.
This mean temperature was 1.21C above the long-term-average from 1961 to 1990, and 0.58C above the 1991 to 2020 long-term-average.
The season's highest temperature was 17.2C recorded during Storm Bram at Phoenix Park in Dublin on Tuesday 9 December.
This was the highest maximum temperature recorded at that location for 25 years.
All mean air temperatures across the country were above their long-term averages for the season.
The Met Éireann statement also showed that winter was wetter than normal with average rainfall 13% above the long-term-average.
This made it the seventeenth wettest winter on record nationally.
Percentage of seasonal total rainfall values ranged from 79% at Finner, Co Donegal, to 174% of normal rainfall at Johnstown Castle, Co Wexford.
Johnstown Castle recorded its wettest winter since 2016 and second wettest since records began in 1942.
It also recorded 51.1mm of rainfall in a single day, Sunday 14 December, the highest daily rainfall recorded anywhere last winter.
Along with Johnstown Castle, five other locations, mostly in the east, also had their wettest winter since 2016.
These were Dublin Airport, Phoenix Park and Casement Aerodrome in Dublin, Mullingar in Co Westmeath and Dunsany, Co Meath.
