Storm Ophelia most extreme event among highs and lows
The sunniest day of the year was July 18 with the highest number of daily sunshine hours. A total of 15.9 hours were recorded at both Johnstown Castle in Wexford and Cork Airport.
The highest recorded wave, which was measured off the Waterford coast, reached a height of 17.81m, the height of a six-storey building, on October 16.
The hottest day of the year fell on June 21 with the highest air temperatures of 28.6C recorded at the Phoenix Park, Dublin.
The highest off-shore wind gust blasted Fastnet Rock lighthouse, where winds reached 190km/h during Storm Ophelia.
The highest gust on land was at Roche's Point on October 16 with gusts reaching 155.6kmh.
The lowest recorded air temperature was -6.6C in Dublin during the big freeze in December.
The sunniest spring day since 1885 was recorded at Malin Head on May 25, with temperatures reaching 25.1C.
The highest daily rainfall was recorded at Malin Head, Co Donegal, on August 22, when 77.2mm fell.