Rainfall Return Period

Request a Rainfall Return Period Table (SUPERSEDED)


Please note that the calculations from Fitzgerald (2007) are now superseded with the publication of the most up to date data by Mateus and Coonan (2023), available here under ‘Rainfall Return Period’.

Note: The Rainfall Return Period form may not operate if cookies for Met.ie have been rejected. If you experience any issue when requesting data, please contact enquiries@met.ie including the required details as outlined in the form below.

Method used in the Estimation of Point Rainfall Frequencies

Fitzgerald, D. L. 2007. Estimation of point rainfall frequencies. Technical Note no. 61. Dublin: Met Éireann. http://hdl.handle.net/2262/70546


A Rainfall Return Period table will be sent to your email address within the next hour. There is no check to ascertain whether the File Name matches the co-ordinates supplied. * Please ensure that you use Irish Grid co-ordinates, not ITM. Irish Grid Reference Finder is available here

Download 1981-2010 Annual Average Rainfall Grid

Please contact us at enq@met.ie  if you experience any problems.