"A heatwave refers to a prolonged period of abnormally hot weather which may be accompanied by high humidity. While there is no generally accepted definition of a heatwave, in Ireland it's classified as 5 consecutive days with a maximum temperature in excess of 25 degrees Celsius". (Met Eireann)
Heatwaves are associated with environmental effects and these can cause public health impacts such as:
Please click into the above for more information and general health advice.