A breezy day with southwest winds fresh to strong and gusty in most places. Outbreaks of rain will be heavy and persistent over Ulster and Connacht, extending to parts of Leinster and West Munster but it will stay largely dry across southern coastal counties. Temperatures remaining at 10 to 12 degrees generally but dropping a couple of degrees across Ulster later.
There'll be very little change overnight. Winds will ease over northern parts and temperatures will be between 7 and 9 degrees in Ulster, but otherwise the outbreaks of rain and breezy conditions will continue and temperatures across the rest of the country will remain unchanged.
Tomorrow, Tuesday, will continue wet and breezy and mild with temperatures unchanged from overnight values. The winds will ease in the north and the outbreaks of rain will then slowly begin to clear southwards as a cooler northwest breeze becomes established later.
3 Day Outlook
As the last of the rain clears the southeast, it'll become dry and clear on Tuesday night, and it will turn colder too as a moderate west to northwest wind becomes established over the country. Temperatures will fall to between plus 1 and plus 3 degrees.
Wednesday, Christmas Eve, will be mainly dry. Some sunshine will develop for most places but Atlantic showers will affect coasts, dying out before making any progress inland. It will be a noticeably colder day though with a moderate westerly wind, decreasing light later. Temperatures in the afternoon will be between about 5 and 8 degrees generally, but along the south coast it'll be a milder 10 or 11 degrees, and it will become very cold and frosty overnight with temperatures down below freezing for most places.
Thursday, Christmas Day, will start out cold and frosty. It will be a dry day with light winds and with some sunshine too. Temperatures will be low, between about 4 and 7 degrees, coldest in the east. Winds will be light westerly or variable in direction. Under clear skies on the night of Christmas temperatures will fall to between minus 2 and minus 4 degrees as winds fall off and skies clear.
Beyond St Stephen's day the outlook becomes much more uncertain. At the moment it looks like St Stephen's day will be dry to start with rain developing from the west later in freshening southerly winds. It looks likely to become milder again too but there is a large degree of uncertainty in the atmosphere beyond the short range.
Irish Water Safety - Stay within your depth when swimming in open water
Irish Water Safety is appealing to the public to stay within their depth when swimming in open water during this current spell of hot weather, following an analysis of the thirteen drownings in last year's heat wave.
The majority of drownings, 62%, occur inland where river and lake beds can be difficult to see and therefore extremely difficult to determine if you are swimming within your depth. The onset of cramp, combined with the panicked realisation that you are out of your depth can have tragic consequences and be compounded further by the muscle cooling effect of longer periods in open water. Bear in mind that in a recent analysis on drowning over the last 25 years we discovered that 32% of drowning victims had consumed alcohol so stay away from water when you have been drinking.