Met Éireann has warned Storm Floris is set to bring “wet and unseasonably windy weather” as councils issued advice ahead of its arrival.
The forecaster said “more people will be at a greater risk of exposure than would normally be the case” during the storm due to the numerous events being held across the country, including those that involve camping.
Met Éireann has issued Status Yellow weather warnings, which are due to come into effect from early tomorrow morning.
The forecaster issued a wind warning for counties Clare, Galway, Mayo and Sligo, which is valid from 2am tomorrow until 1pm.
Another such alert was announced for counties Cavan, Donegal, Monaghan and Leitrim, which is valid from 4am Monday until 4pm.
A Status Yellow rain warning will also cover counties Donegal, Galway, Leitrim, Mayo and Sligo.
This is valid from 2am on Monday until 10am.
The UK Met Office also issued a yellow warning for counties Antrim, Armagh, Down, Fermanagh, Tyrone and Derry.
This alert is due to come into effect at 6am tomorrow and is valid until 6am on Tuesday.
Newry, Mourne Down County Council has said the district’s forests, country parks and trials will be “closed to cars and pedestrians” tomorrow.
This, it said, is due “the increased likelihood and risks associated with falling branches and debris”.
The council advised the public “not to visit our play parks, outdoor sport facilities and outdoor recreational areas” alongside coastal amenities such as beaches and harbours.
Cavan County Council said its crews will be “mobilised from early morning to deal with any emergency situations as they develop”.
It advised road users to to keep vigilant for falling or fallen debris on roads, and urged cyclists and pedestrians to ensure they are visible to other road users.
Householders, it said, should secure large items such as lawn furniture or trampolines.
The council also asked people to “check in on isolated and vulnerable neighbours in advance of the oncoming severe weather and again after the worst of the event has passed”.
Met Éireann said Storm Floris is expected to track over the northwest tonight and tomorrow, before moving over Scotland and clearing into the North Sea.
The storm, it warned, will “very strong and blustery southwest winds veering westerly, with some damaging gusts” alongside heavy rain and a chance of thunder.
It cautioned the potential affects of the storm may impact outdoor events and may cause dangerous travelling conditions, structural damage, trees to fall and debris.
It also warned of the possibility of power outages, wave overtopping, lightning damage and localised flooding.