Parks, beaches and other swimming spots are likely to be busy this weekend - with temperatures set to reach 21 degrees.
There'll be some heavy downpours in places this afternoon and evening.
However the sun will return tomorrow, over most of the country.
Cathal Nolan, from Ireland's Weather Channel, says Monday will be the best weather overall:
"It's probably a bit of a drier picture on Monday. There may be some cloud pushing into the south west later on in the day, maybe bringing a little bit of overcast conditions here, possibly a little bit of rain later on, but for the majority of the country, pretty dry, pretty sunny as well on Monday, so overall, quite good conditions, but certainly the best of the conditions will be in the northern half of the country over the course of the bank holiday weekend".
