MET ÉIREANN HAS issued severe weather warnings as winds of up to 130km/h are expected tonight.
Later Sunday night and continuing through Monday, southwest winds will increase to speeds of between 50 and 80km/h, with gusts ranging from 90 to 130 km/h.
The most sustained and severe winds are expected across Connaught and Ulster, according to the forecast. Coastal flooding may occur on Monday due to exceptionally high seas and spring tides.
Southerly winds will also reach gale force this evening on all irish coasts and on the Irish Sea.
Irish Ferries has cancelled its Swift Sailings for today and Monday due to the adverse weather forecasts.
P&O Ferries has also cancelled some of its ferry crossings on the Irish Sea today.
On its website, AA Roadwatch has warned drivers about the stormy conditions, advising them to take particular care on exposed roads and in high-sided vehicles.