Met Eireann says the bank holiday weather will be mixed. There is a "medium" risk of sunburn in all regions, along with moderate pollen counts. The predicted degree of sunburn has little to do with weather and more with general ozone conditions. In general the weather is likely to be unsettled. It "will not be especially warm".
Last week's relatively high average temperatures in the 20s will not be experienced over the weekend - and temperatures in general will be up to 18 or 19 degrees. Today will be both sunny and showery. Tomorrow will see "more general rain", clearing later. Bank holiday Monday, too, will be showery.
It's not all doom and gloom, however. There will be "half-days" of sunshine in many areas and short periods everywhere when the umbrellas can remain closed.
The AA is warning road travellers to put safety first. Motorists are being advised to slow down, wear seat belts - even for short journeys - and to take breaks if driving long distances.
In general, long delays and tailbacks may be expected. The Galway Races conclude tomorrow, with races today and tomorrow taking place between 2.30 p.m. and 5.35 p.m..
A sponsored cycle (16 cyclists plus back-up vehicles) in aid of the Children's Hospital, Temple Street, Dublin, will take place between Galway and Dublin over the weekend.
The two-day Witnness music festival begins today at Fairyhouse racecourse, Co Meath. A two-way traffic system will operate until 4 a.m. on Monday. Road closures will not be in place, but motorists travelling between Ashbourne and Dunboyne to Rathoath village are requested to go via Dun shaughlin.
In Dublin two matches take place in Croke Park at 2.30 p.m. and 4.20 p.m. while in Waterford the "Spraoi" festival which began yesterday continues until Monday. Delays are likely in the city as street activities will leave many streets restricted or closed.
The ESB appealed yesterday to people using water facilities over the weekend to be careful - especially those planning to swim or paddle at Poulaphouca in Co Wicklow.
"ESB cannot stress strongly enough the dangers of paddling and swimming in the reservoir. We strongly recommend that the public observe ESB notices and the advice of patrolling wardens," it said in a statement.
For information on travel and festivals around the country see Explore Ireland at www.ireland.com/explore/