I rode for 2 weeks in Ireland in May 2023 at the start of a 7 week long tour which also included France and Germany.
We camped about 50% of the time Ireland and stayed in Hostels when not camping.
It was nice to have a roof over your head when it was really wet.
We had dry sunny weather for 8 or 9 days.
The weather seemed to move through pretty quickly on rainy days, most of those days included some sun or dry periods.
You can read about it in this thread:
Field Notes from Europe