A status yellow thunderstorm warning has been issued for 11 counties.
Met Eireann is warning of a risk in Dublin, Carlow, Kildare, Kilkenny, Laois, Offaly, Wexford, Wicklow, Cork, Tipperary, and Waterford.
It's in place until 9pm, with a risk of spot flooding, poor visibility, and difficult travelling conditions.
Met Eireann says: "Moderate chance of thunderstorms this afternoon and evening with a possibility of hail.
"Possible impacts:
Spot flooding
Poor visibility
Difficult travelling conditions".
