Irish county grotty, reportedly – wetter, suddenly? (8)
I believe the answer is:
downpour
'reportedly wetter suddenly?' is the definition.
I can't judge whether this definition defines the answer.
'irish county grotty' is the wordplay.
'irish county' becomes 'Down' (County Down).
'grotty' becomes 'pour' (I can't justify this - if you can you should give a lot more credence to this answer).
'down'+'pour'='DOWNPOUR'
Can you help me to learn more?
(Other definitions for downpour that I've seen before include "Deluge" , "cats and dogs?" , "Heavy shower" , "Torrent" , "Now proud (anag)" .)