It is going to be a warm day as Dublin is set to see a scorching 20C.
The morning will start off with a mix of sun and showers, but the afternoon wil bring long spells of sunshine.
But the sunny spells will not last as there will be heavy and persistent outbreaks of rain in the evening.
Met Eireann has also warned of the risk of spot flooding. Temperatures will be between 10C to 13C.
Monday will see more persistent rain at first but it will be drier and brighter in the afternoon.
Temperatures will hit a scorching 21C.
Here is what the national outlook says for the rest of the week:
Monday night
A Met Eireann forecaster said: "Clear spells and just a few well-scattered showers on Monday night. Minimum temperatures of 9C to 12C in moderate northwest breezes."
Tuesday
"It looks set to be mostly dry on Tuesday with sunny spells and just a few passing showers, these mainly affecting the northwest of the country.
"Feeling fresher than in preceding days with highest temperatures of 15C to 18C in moderate northwest breezes.
"Cool and mostly clear on Tuesday night with just one or two isolated showers. Minimum temperatures of 6C to 9C with light, variable winds."
Wednesday
"It is expected to start mostly dry on Wednesday with sunny spells. However, cloud will thicken in the south with rain expected to develop in Munster during the afternoon.
"Elsewhere, it will remain largely dry with further sunny spells. Highest temperatures of 16C to 20C with moderate southeast breezes increasing fresh along southern and western coasts.
"Outbreaks of rain and drizzle will extend to much of the country on Wednesday night. Minimum temperatures of 11C to 14C in freshening southeast winds."
Thursday
"Early indications suggest Thursday will be a humid and breezy day with scattered outbreaks of rain and drizzle.
"The rain is expected to be heaviest and most persistent in the west and north with the best dry spells further east and south.
"Highest temperatures of 17C to 21C in fresh southeast winds.
"Rain affecting parts of the west and north on Thursday night but mostly dry elsewhere. A humid night with minimum temperatures of 13C to 16C in fresh southeast winds."
Friday
"Humid and breezy on Friday with patchy rain in Atlantic coastal counties and hazy sunny spells elsewhere. Warm with highs of 19C to 23C."
