The most amount of sunshine was seen at Shannon Airport
A new report from Met Éireann has found September brought a number of weather extremes.
It says the cool and unsettled weather continued from the summer months.
It points to some heavy spells of rain, especially on the 27th, though there were some dry days with warm sunshine too.
Monthly rainfall totals were above average at most stations - they ranged from 92% of the monthly rainfall total at Malin Head, Co Donegal to 183% at Johnstown Castle, Co Wexford.
The month's wettest day was also recorded at Valentia Observatory, Co Kerry with 39.8 mm on September 2nd.
In relation to temperatures, Met Éireann says all temperatures were on or below their average.
The month's lowest temperatures were recorded on September 17th with the lowest air temperature of 1.0°C at Mount Dillon, Co Roscommon - and the lowest ground temperature at Markree, Co Sligo with -1.4°C.
The highest was seen on September 3rd at Oak Park, Co Carlow with a temperature of 23.4 °C.
The report says over half of monthly sunshine totals were on or above the average.
Knock Airport in Co Mayo got just 85% of its monthy average of sun, while Shannon Airport in Co Clare got to 104% of its sunshine average across the month.
Cork Airport had its sunniest September since 2012, getting 135.2 hours of sun.
The highest number of daily sunshine hours was recorded at Valentia Observatory, Co Kerry at 12.3 hours.
The number of dull days ranged from five days at both Dublin Airport and Malin Head to 10 at Valentia Observatory, Co Kerry.
There was no air frost reported last month, while one-third of weather stations reported ground frost.