With the warm weather set to continue, the ESB is reminding people not to swim in reservoirs during the warm weather, due to a risk of uneven ground and deep waters.
These include Poulaphoca in Wicklow and Leixlip in Kildare.
Meanwhille France has been put under its highest-level danger alert as a heatwave brings life-threatening conditions.
Forecasters predict temperatures of up to 45 Celsius in some parts.
Germany, Poland and the Czech Republic have all recorded their highest-ever June temperatures, and in Spain firefighters are battling Catalonia's worst wildfires in 20 years.
Government Officials Meet Wicklow County Council To Address Housing And Infrastructure Challenges
Stark New Report Reveals Deep Challenges For Wicklow Teens
Wicklow Is Ireland’s “Garden of Ghouls” And Haven for Horror Filmmakers
Wicklow Gaol Set For New Chapter as Tender Launched for Operator
Local TD's Bemoan Fianna Fáil's And Fine Gael's Cataclysmic Level Presidential Disasters