Many parts of the country recorded their coldest May in 19 years, according to Met Eireann.
Its monthly weather report confirmed what everyone already knew - that it was very wet, cold and dismally dull in places.
Nationwide, many parts had their wettest May in 34 years.
Malin Head in Co Donegal had not experienced such a washout in more than 120 years.
The rainfall contributed to the region's wettest spring since records began in 1885.
It was dull too, with daily sunshine levels below normal last month.
Temperatures in spring, taking in the months of March, April and May, were described as "cool" by Met Eireann.
Meanwhile, the weather looks like it will be a mixed bag over the next few days.
Tomorrow morning will be mostly cloudy and damp with outbreaks of rain and drizzle.
"The rain will become light and patchy and will gradually clear to the east during the afternoon," Met Eireann said.
"Sunny spells and a few isolated showers will follow from the west."
Highest temperatures will be around 16C.
Saturday will bring a mix of sunny spells and scattered showers, some of them heavy in the afternoon.
The outlook for Sunday is that it will be mainly dry with sunny spells and light breezes.