Met Eireann has issued a weather warning for high temperatures.
The forecaster is saying Ireland will experience a hot spell from Sunday and into early next week.
Day time temperatures will widely reach the high twenties, possibly exceeding 30 degrees in some locations.
Met Eireann is warning it will remain uncomfortably warm overnight.
The warning is in place until next Wednesday.
Professor of Health Systems at DCU Anthony Staines has this advice: