Yesterday was the hottest day of the year so far, according to Met Éireann.
The Irish National Meteorological Service said it recorded a temperature of 18.9 degrees in Newport Furnace, Co Mayo, the highest of 2022 so far.
It comes as Co Wicklow has been enjoying clear skies and sunny weather recently, with highest temperatures of 13 to 16 degrees forecast for today.
However, Met Éireann has warned there is the chance of a few showers at times mainly over the eastern half of the country, generated by more unstable air over the next few days.
The most significant change will come on Wednesday as a northerly airflow establishes across the country feeding in noticeably colder air from Scandinavia.
While temperatures over the last week have been above average for the year, daytime temperatures will drop back to single figures.
Meteorologist of Met Éireann Brandon Creagh said: “It’ll be important to bring plants indoors that are sensitive to cold. Also, farmers and gardeners should be aware that growing conditions will not be as good as they have been recently.”