Met Éireann has issued a yellow weather warning with hail and thunder expected.
The warning, which comes into effect from 3pm, has been issued for all counties in Munster.
It says thunderstorms will likely develop this afternoon and evening.
“Due to the localised nature of thunderstorm activity some areas will escape completely, but areas impacted will see torrential downpours with possible hail, leading to some spot flooding,” it added.
The warning remains in effect until midnight.
It follows heavy overnight rain with flooding continuing to impact a number of areas in West Cork.