Met Éireann has issued a high temperature advisory.
Weather forecasters say the latest charts today still show temperatures potentially exceeding 30 degrees from Sunday.
Met Éireann's issued a high temperature advisory, and says it could trigger a high temperature warning over the weekend and into the early days of next week.
Night-time is expected to be uncomfortably warm.
Offaly's Cathal Nolan from Ireland's Weather Channel has been looking at the most up-to-date charts:
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