Met Eireann has issued a national weather warning. A status orange thunder warning for thunderstorm activity is in place until 11 o'clock tonight.
The forecaster says: "Widespread thundery activity expected this afternoon and evening."
Widespread heavy thundery downpours are expected this afternoon across the country with the risk of spot flooding. There will be top temperatures of 18 to 22 degrees. Met Eireann says heavy rain will continue until midnight.
Tomorrow, Wednesday, is set to be a bright and breezy day with sunny spells and scattered showers, with highs of 16-19 degrees.