Ireland is set to get it's first August heatwave since 2006 this week.
Temperatures are set to hit up to 29 degrees before the end of the week with a yellow hot weather alert issued by Met Eireann for Leinster and Munster from tomorrow.
16 years ago, an extreme heatwave hit countries all around Europe with temperatures above 20 degrees recorded on 29 consecutive days in County Kilkenny.
Experts say that just because air temperatures are warm, doesn't necessarily mean water temperatures will be the same - and that you could be at risk of cold water shock when entering the water.