10 October – The Windscale fire began with a fire in a graphite core of a reactor at the Windscale Nuclear Power station and reprocessing centre on the Cumberland coast of North West England. Years later there were claims that the radiation caused cancers and birth defects in County Louth.
27 October – The foundation stone of Galway Cathedral was blessed.
1 November – The Soviet satellite Sputnik was visible over Dublin for the second time in a month.
November – Border Campaign: The premature explosion of a bomb at a farmhouse in County Louth killed four IRA men and a householder.[1]
12 May – The Pike Theatre in Dublin staged the Tennessee Williams play The Rose Tattoo. During its short run the theatre was invaded by Gardaí and director Alan Simpson arrested for producing "a lewd entertainment" for a mime of dropping a condom onto the floor.[7]
The Bachelors musical group formed as The Harmonichords in Dublin.