A status yellow rain warning for Galway, Mayo, and Clare is in place today, with spells of heavy rain expected to last into the night.
The yellow weather will be in effect until 9pm on Friday, with spells of rain expected throughout the day, turning heavy at times.
This may cause some localised flooding Met Eireann has warned.
A Status Orange weather warning has also been issued for county Wicklow today, with heavy rain forecast until 11am Saturday.
Two other status yellow rain warnings have also been issued for Carlow, Dublin, Kilkenny, Louth, Wexford, Waterford, Cork, and Kerry.