Met Éireann has issued a status yellow rainfall warning for five eastern counties.
The alert is in place for Dublin, Kildare, Louth, Wicklow and Meath.
The forecaster says there will be spells of heavy rain, with a risk of spot flooding.
The warning is in place until 9.00pm on Monday night.
Rainfall Warning for Dublin, Kildare, Louth, Wicklow and Meath
Spells of heavy rain today with a risk of spot flooding.
Valid from 08:00 Mon, 04-Nov-2019
Valid until 21:00 Mon, 04-Nov-2019 pic.twitter.com/t0jwud4p9I
— Met Éireann (@MetEireann) November 4, 2019
Overall on Monday there will be a few bright spells, but misty and mostly cloudy.
Rain will affect much of Leinster, with some heavy falls at times in eastern areas, with a risk of spot flooding.
There will be occasional showers elsewhere, but with a few sunny spells.
Top temperatures 8 to 11C - but feeling cooler in freshening northeasterly winds, which will be stiff in some coastal areas.
Cloud and outbreaks of rain will persist in eastern coastal counties for a time on Monday night, with drier clearer conditions prevailing elsewhere.
There will be lows of 3 to 7C degrees in moderate northerly winds, which will continue fresh to strong and gusty near coasts.