In the Republic of Ireland, the same temperature threshold must be met for five consecutive days<\/a>.<\/p>\n Temperatures in the Republic are also set to soar on Thursday where an almost 140-year-old record could be threatened.<\/p>\n 33.3C was recorded at Kilkenny Castle on 26 June 1887.<\/p>\n If that temperature were to be exceeded on Thursday it would be the hottest temperature ever recorded on the island of Ireland.<\/p>\n Temperatures in the Republic of Ireland are also rising as can be seen at Dublin Bay [PA Media]<\/p>\n Met \u00c9ireann meteorologist Holly O’Neill said the west coast of Ireland would likely see the highest temperatures.<\/p>\n “We’re expecting temperatures to range between 25 and 31C, but it is possible we could see higher temperatures in some places,” she told BBC Radio Ulster’s Evening Extra<\/a> programme.<\/p>\n “It’s hard to pinpoint specific areas but we’re looking at parts of Connacht and the midlands. It could be in Galway or even Newport Furnace in County Mayo.”<\/p>\n A yellow heat warning is in place across the Republic of Ireland until 09:00 on Friday.<\/p>\n Climate change<\/p>\n Climate change has led to more frequent and intense heatwaves, the Met Office’s chief scientist has said.<\/a><\/p>\n “To see temperatures like this in the UK in June is sobering,” he added.<\/p>\n Met Office projections indicate hot spells will become more frequent in the future, particularly over the south-east of the UK.<\/p>\n![\"A](\"https:\/\/www.europesays.com\/uk\/wp-content\/uploads\/2026\/06\/f9b0b147b772a6d6034bb5d9d22b2fb4.jpeg\"\/)
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