REVELLERS welcoming the arrival of 2013 are advised to wrap up warm as Met Eireann warns of strong winds tonight.
However, it is due to remain dry for many parts of the country as the countdown gets under way.
Forecaster David Rogers said it will be a wet and windy start to New Year's Eve before conditions improve in the morning and afternoon. The bulk of the country will be dry for the celebrations, although northern and western counties will have some showers of rain.
But winds will increase in the evening and it will feel cold with temperatures of just four or five degrees.
New Year's Day will be a showery one but it will be largely dry for southern and eastern counties. It is set to get mild as the week progresses with temperatures a few degrees above normal for this time of year at 10 to 12 degrees.
Meanwhile, as partygoers the length and breadth of the country herald the arrival of 2013 with family and friends, events big and small are planned to count down the last moments of 2012 and celebrate the start of the new year.
NYE Dublin Festival kicks off at 6.30pm with the People's Procession of Light when 1,000 members of the public will hold LED lights as they wind their way from College Green to St Stephen's Green.
The Big Bang fireworks display on St Stephen's Green gets under way at 8pm and is followed by the Countdown Concert back on College Green.
Meanwhile, there will be free family entertainment at the Big Brunch at Meeting House Square in Temple Bar from 11am to 3.30pm on New Year's Day and those of a more athletic persuasion can blow away the cobwebs at the Tom Brennan Memorial Run in the Phoenix Park at noon.
Thousands of people will line the River Foyle as Derry celebrates the beginning of its status as City of Culture with Ireland's biggest ever fireworks display.
The family event begins at 7.30pm with the pyrotechnic display due to commence at 8.13pm.
On New Year's Day there will be a traditional night at Ionad Cois Locha in Dunlewey, Co Donegal, where Altan and special guests Realta play as part of the Frankie Kennedy Winter School starting at 8.30pm.
Sin City comes to Cork this New Year's Eve where hundreds of revellers are expected to ring in the new year at a Viva Las Vegas Party at the Savoy in Cork city centre .
Revellers will ring in the new year in Killarney's town centre as it hosts its first New Year's Eve Street Bash with entertainment, music and dance from 9pm followed by fireworks at midnight.
Two tonnes of fireworks will explode in the skies over the seaside town with a display at 6pm on the Carlisle Pier for a younger audience and a second, bigger display at midnight.
Christmas Spraoi in Tralee culminates in a New Year's Eve fireworks display.
The Achill Pipe Band will sound a welcome to the new year on the Co Mayo island before hardy swimmers take to the sea off Dugort Strand for a refreshing swim at 1pm on New Year's Day.
The Co Kilkenny town holds street entertainment from midday on New Year's Day followed by a parade of floats at 3pm and the fun-filled Castlecomer Wellie Race as the town's inhabitants fun 5km in their best wellington boots.