ALERT: Met Éireann's five-day forecast as threat of major storm looms
There'll be widespread heavy showers on Easter Monday, there's a chance of hail and isolated thunderstorms possibly leading to spot flooding.
The showers will be most frequent in the east and north and will ease off in the evening. Highest temperatures of 8 to 11 degrees with strengthening westerly winds.
Forecaster Alan O'Reilly added: "Latest weather models thankfully in the main downgrade the risk of storm hitting is directly with it more likely to end up south of Ireland.
"However there is still a lot of uncertainty around track and timing.
"That also means huge uncertainty around rainfall with some models showing an awful wet day Tuesday."
Heavy showers will become isolated Monday night with long clear spells developing. Lowest temperatures of zero degrees in the north to plus 4 degrees in the south, in mostly light southwesterly or variable winds.
Tuesday will start out with widespread showers, some heavy. More persistent rain will develop in the southwest in the afternoon and extend northeastwards.
A clearance will follow from the west in the early evening. Highest temperatures will range from 7 to 10 degrees in light to moderate southwest to south winds, becoming variable in direction later.
Showers on coasts on Tuesday night may turn to sleet and snow over hills and high ground, it'll be mainly dry away from coastal areas.
Lowest temperatures will range from zero to plus 1 degree with moderate to fresh westerly winds backing southerly. There is a chance of very strong winds in parts of the west and south towards morning.
A strong northwest wind will develop on Wednesday bringing frequent squally showers throughout the day.
Some of the showers will be heavy with a chance for isolated thunderstorms and hail and the showers may merge to longer spells of rain at times. Highest temperatures 7 to 9 degrees in fresh to strong and gusty northwest winds.
Showers will become confined to coasts on Wednesday night with clear spells elsewhere. Lowest temperatures of 2 to 4 degrees in fresh and gusty northwest winds.
There'll be scattered showers on Thursday, becoming frequent for a time in the afternoon. Highest temperatures of 9 to 11 degrees in a fresh to strong northwest wind.
Thursday night will be mostly dry with clear skies and lowest temperatures of minus 2 to plus 2 degrees with light, variable winds.
There'll be sunny spells and scattered showers, mainly in the north on Friday with light variable winds and temperatures of between 11 and 13 degrees in the afternoon.
Current indications suggest a generally unsettled outlook for the weekend with rain at times, and possibly warmer conditions coming on a southerly wind.