DublinCity WiFi covers most city centre areas with surprisingly decent speeds for council-run internet. Connect to 'DublinCity' network and register with email — Works for 2 hours then reconnect. Strongest signal around Trinity College, Temple Bar cultural quarter, O'Connell Street, and Stephen's Green Shopping Centre.

Dublin City Libraries have excellent free wifi — Central Library on Ilac Centre (Henry Street) open until 8pm weekdays, Pearse Street Library until 9pm Thursdays. Charleville Mall Library in North Strand also reliable option away from crowds.

Most Dublin cafés offer wifi but Insomnia coffee shops are everywhere with solid connection — Locations on Grafton Street, Dame Street, O'Connell Street. Avoid relying on hotel wifi in areas like Ballsbridge or beyond M50 — Often terrible speeds. Three Mobile Ireland does €20 monthly data if staying longer than week.