People have been warned the solar ultraviolet (UV) index will be very high for the next few days with temperatures of up to 28 degrees expected over the weekend.
There will be temperatures of 19 to 23 degrees for Wednesday and Thursday, with some cloud. Temperatures will rise to 25 degrees on Friday and then 27 degrees to 28 degrees on Saturday and Sunday.
“We’re in for some very nice summer weather,” said Met Éireann spokesman Gerry Murphy.
The weather will stay warm into the middle of next week when there will be a threat of showers and somewhat cooler conditions, Mr Murphy told RTÉ’s Radio’s Morning Ireland programme.
Over the weekend the temperatures at night will range between 13 and 16 degrees.
“While we should all look forward to and enjoy the sunshine, people should be aware the solar UV index will be very high so people will need to take great care in the sun, stay in the shade and then water safety is always paramount in this sort of weather as well.
“I would hope that the good weather would continue overall, in general we’ve had a very good summer this year.”
Mr Murphy explained that the high temperatures will be as a result of the Azores High, which is an area of high pressure usually located to the south of Ireland containing tropical, warm air.
Hiking, swimming, eating out and more . . .
With the country set for a spell of fine weather, it’s the perfect time to experience the country’s great outdoors. Here are some of the best options drawn up by Irish Times writers:
Hiking
Take to Ireland's hills and mountains, with Rozanna Purcell's 32 great hikes, including links to maps and routes.
Cycling
A guide to 32 great cycling routes around Ireland – one in every county - from Ian O'Riordan.
Running
For those keen on a run (or runs): A guide to 32 mapped runs around Ireland.
Walking
Thirty-two great walks to enjoy with family, friends or by yourself.
Beaches
Whether you're looking for family fun, seaside activities or a beach with cinematic associations, check out this round-up of some of the country's best beaches.
Outdoor gyms
If it's outdoor gyms you're looking for, we have a guide to one in every county.
Al fresco dining
Is all that exercise leaving you hungry? Here's a guide to 100 great places to eat outside in Ireland.
Corinna Hardgrave profiles 12 Irish restaurants that have nailed outdoor eating – whatever the weather.
For those on the move, we have 10 perfect eating pitstops around Ireland's coast.
Food markets
And the best Irish Irish food markets – 35 great places to shop, eat and socialise.
Summer camps
There's still time for some summer camps, with programmes catering for all interests, including sport, tech and art.
Hobbies and clubs
From seeing stars to exploring caves: the best hobbies, clubs and outdoor activities for adults.
Toilets
At last, but not least, a map of Ireland's public toilets for when nature calls.