Met Éireann has issued a yellow weather warning for Cork and 13 other counties.
The meteorological service says heavy and thundery rain can be expected today with localised flooding and accumulations of 25 to 40mm in places.
The weather warning, which was issued earlier this morning, will remain in effect until 7am on Tuesday morning.
The latest warning follows heavy rainfall in recent days which led to flooding in a number of areas in West Cork including Rosscarbery, Dunmanway and Rathbarry.
Sections of the N71 were closed for a time but the route has now reopened to traffic.
Cork County Council says there has been significant damage to many roads in West Cork as a result of recent flooding.
It has reminded motorists to exercise caution on all roads and in particular not to drive through flood waters.
“Cork County Council roads crews are working on the worst affected roads and continue to monitor the situation closely,” the local authority said in a statement.
Meanwhile, the Rosscarbery/Glandore Rd (R597) remains closed following flooding.