A red and orange weather warning has been issued up until Tuesday Morning.
Five counties have been issued a read warning for today. These include Cork, Galway, Mayo, Kerry and Clare, with winds of up to 160kph predicted. The rest of the country has been issued with an orange warning.
Monday: It will be stormy this morning, as Ex-Hurricane Ophelia moves up over the country. Gale force southerly winds will occur with severe and damaging gusts - winds strongest along southern counties with the risk of storm surge here, along with very high seas.
Structural damage is possible anywhere. Rain will be widespread, with the heaviest falls likely to occur in Atlantic coastal counties. Localised flooding is possible with thundery falls also in areas. Winds will veer southwesterly as the low pressure system tracks northwards over western parts of the country. Highest temperatures will range 15 to 19 degrees Celsius.
Monday night will see hurricane Ophelia continue to track northwards, exiting Irish coastal waters before midnight. Rain will gradually become confined to the west Connacht and west Ulster coasts and it will become dry in many parts with clear spells. Strong to gale force and gusty southwesterly winds will gradually abate.
Tuesday will see the stormy weather clear as weather warnings are no longer in place. It will begin a bright and mostly dry day, with sunny spells and just a few scattered showers. Winds will continue to moderate, mainly west to northwest, backing westerly. Top temperatures of between 13 to 15 degrees. Tuesday night will be mainly dry, with a mix of cloud and clear spells and lows of 7 to 11 degrees.
Early on Wednesday morning, rain will develop in the southwest, and spread north eastwards across the country through the morning and will be heavy at times. It will clear eastwards in the afternoon and early evening. Highest temperatures of 13 to 16 degrees with moderate to fresh southerly winds, veering southwesterly.
On Thursday, outbreaks of rain will develop over the southern half of the country, but it should remain dry further north. Unsettled weather is forecast to continue into Friday and the weekend, with rain expected.