Plenty of sunshine - but keep the jacket close by
Sunshine will light up the country for most of the week - but hold the ice cream cones and keep the jacket handy for now.
Expectations that temperatures might hit as high as 20C this week have been dampened by forecasters at Met Eireann.
However, there will be plenty of sunny weather, although it will remain chilly at night in a reminder that summer is still some distance away.
Today is set to be a dry, bright day with good sunny spells in all areas, though some cloudy periods cannot be ruled out.
Top temperatures will be around 12C in eastern coastal fringes, due to an onshore easterly breeze, but other areas should see temperatures of around 15C to 17C.
Tomorrow will be dry and breezy with sunny spells, with highest temperatures of 12C to 16C.
Wednesday and Thursday will also be dry with sunny spells and light easterly breezes. Met Eireann says they will be "warmer days" with highest temperatures ranging up to 18C.
Rain may spread from the southwest during Thursday night, with Friday cloudy with rain in many areas and much cooler than previous days. The weekend will be similarly cool with showers spreading from the west.
Temperatures yesterday hit the high teens, with weather stations at Valentia in Kerry and Belmullet in Co Mayo recording 17C.