The median temperature for the month was 16 degrees Celsius.
Met Eireann says Ireland experienced the hottest June recorded in 83 years.
The median temperature for the month was 16 degrees Celsius, over a half a degree higher than the last recorded peak.
Paul Moore, climatologist at Met Eireann says Ireland, along with the rest of Europe, has been seeing a "warming trend".
He says nearly every part of the country is being effected: