However some showers will occur in the Connacht and Ulster later.
The warm weather will continue tomorrow, with the highest temperatures expected in the southeast of the country.
The rest of the week looks mainly dry and warm - but rain is forecast to arrive on Sunday.
The Met Eireann website says: 'current indications suggest the bulk of the country will be dry on Saturday with increasing cloud amounts and highs of 16 to 20 degrees with light to moderate southeast winds, which will freshen in the southwest later.
Then possibly becoming rather damp or wet by Sunday with outbreaks of rain feeding up from the south in a humid southeasterly airflow. Highs of 16 to 19 degrees in moderate southeast breezes.'