image copyright Pacemaker
Northern Ireland tentatively recorded its highest temperature on record for the third time in less than a week.
A city weather station d 'Armagh recorded a temperature of 31.4 C at 3:20 p.m. on Thursday.
This compares to 31.3C which Castleerg registered on Wednesday and on 31.2C which Ballywatticock registered on Saturday .
A an orange warning for heat was issued by Met Office through the end of Friday.
The previous record of 30.8 C was 38 years. La Hfrance.fr is not responsible for the content of external sites. See original tweet on Twitter
The hot weather disrupted trips to parts of Northern Ireland on Thursday.
Rail services were delayed after speed restrictions were put in place due to high track temperatures.
Ticket sales for Helen 's Bay in County Down have also been suspendedas part of an attempt to manage the large number of passengers traveling to the area.
Trans said it has made the decision to manage round-trip capacity.
He asked people to consider if their trip was "completely necessary " and to allow extra time to travel.
Infrastructure Minister Nichola Mallon said people should avoid visit places where there is a great chance naked people will congregate.
Ms Mallon said that the high temperatures also affected the road network, the bitumen of certains roads having softened.
Heat exhaustion and sunburn
The Met Office issued the extreme heat warning, with Met Éireann warnings as well in place in the Republic of Ireland.
The Met Office warning is accompanied by a call to watch for heat exhaustion and sunburn.
NI Water has also called on the public to "use water responsibly " as there is a "possibility " that a garden hose ban could be introduced.
right d 'image author Tourism Ireland image caption Temperatures on Valentia Island did not drop below 20.5C Wednesday night
Elsewhere, the Republic of Ireland recorded its first tropical night in 20 years.
Temperatures on Valentia Island , County Kerry, one of Ireland's most westerly points, did not drop below 20.5 ° C overnight Wednesday.
Tropical nights, meaning the shady air stays above 20 ° C all night long, are rare in Ireland, having only been recorded six times before.