Met Eireann has issued a Status Yellow High Temperature warning for two provinces as Ireland is set to sizzle in temperatures of up to 29 degrees later this week.
The forecaster said Leinster and Munster would see "very warm or hot" conditions on Thursday, Friday and Saturday with maximum temperatures generally of 27 to 29 degrees - daytime temperatures may not be as high in coastal areas due to sea breezes.
Conditions will remain warm at night, with temperatures generally staying above 15 degrees.