Weather in Dublin Dublin has a moderate temperate climate which means that the temperature is relatively stable throughout the year. Rain is common all year around; however, there is less rain in Dublin than in the West of Ireland and London. Winters are humid and December is the wettest month of the year. July and August are the hottest months of the year, with temperatures reaching 20C. It is a good idea to take lots of different clothes if you go to Dublin because the weather changes a lot and is very unpredictable. Dublin’s 5-day weather forecast by the BBC Dublin Guide | Dublin Transport Leave a Reply Cancel Reply Your email address will not be published.CommentName* Email* Website Save my name, email, and website in this browser for the next time I comment.