Grim summer days are in store for Ireland before temperatures return to 20C.
Met Eireann is forecasting bleak conditions over Tuesday and Wednesday, with torrential rain expected at times.
Highest temperatures over both days won't surpass 16C in any part of the country - but the mercury is set to soar on Thursday.
A forecaster said: "Mostly cloudy today, Tuesday, with outbreaks of rain, persistent and locally heavy in places, especially in Connacht.
"Misty, with hill and coastal fog. Maximum temperatures of 11 to 16 degrees, coolest in the north.
"Winds mostly light to moderate southeasterly, but veering southwest to westerly moderate to fresh in Munster and south Leinster."
Rain will continue in Munster and Leinster into the night, with temperatures dropping to as low as 5C in parts of the north.
The forecaster added: "Wednesday will be cloudy with rain and drizzle extending eastwards over the southern half of the country.
"Elsewhere will be mostly dry with some sunny spells developing, the best of which will be in the northwest.
"Maximum temperatures of 12 to 16 degrees generally. Winds will be light easterly or variable."
Thursday is set to be the warmest day of the week with sunny spells expected.
But there will still be light rain at times in coastal counties in the south.
The Met Eireann forecaster said: "Mostly cloudy in Munster and south Leinster with patchy rain and drizzle on southwestern and southern coasts.
"Brighter with sunny spells further north. Maximum temperatures of 14 to 16 in the northwest, 17 to 20 degrees elsewhere in light northerly breezes."
