16 May – The Minister for Education, Gemma Hussey, announced a new £20 million project to create a transition year in post-primary schools.
23 June – Three hundred and twenty nine people were killed when Air India Flight 182 exploded in midair 190 kilometres off the southwest coast of Ireland while flying the Montreal–London–Delhi–Bombay route. A bomb was thought to have been planted by the Khalistan movement.
25 June – Irish police foiled an IRA-sponsored bombing campaign in England which targeted London and English seaside resorts.
13 July – The international Live Aid charity rock concert took place in Wembley Stadium, London. It was organised by Irishman Bob Geldof and Scotsman Midge Ure, and Ireland was the highest per-capita donor country.
22 July – Two women claimed to have seen a statue of the Virgin Mary moving in Ballinspittle, County Cork. The grotto became a pilgrimage site and thousands visited there on 31 July.
25 July – Ireland was struck by a violent thunderstorm, one of the worst in the country's history.[1]
2 September – Spike Island Jail in County Cork was left in ruins following a riot by prisoners.
10 September – The first heart transplant in Ireland was performed.
20 September – President Hillery presented Bob Geldof with a cheque for £7 million as the Irish contribution to the Live Aid appeal.
29 September – The pleasure trawler Taurima, owned by leader of the Fianna Fáil party, Charles Haughey, was wrecked near Mizen Head lighthouse.
11 October – Shop steward Karen Gearon, representing striking workers at Dunnes Stores, addressed the United Nations Special Committee against Apartheid on a Day of Solidarity with South African Political Prisoners.[2]
25 October – The first commercial flight departed from the new Knock Airport.