A Status Yellow high-temperature warning is in effect across Ireland from noon Tuesday until Friday morning, with forecasters predicting temperatures reaching 30 degrees Celsius. Met Éireann reports that daytime temperatures will consistently exceed 27 degrees throughout the week, peaking on Thursday, while night-time lows are expected to remain at 15 degrees.
Met Éireann meteorologist Gerry Murphy attributes the current conditions to a “heat dome,” a high-pressure system that traps and compresses air against the Earth, preventing circulation and causing temperatures to rise steadily.
Health and safety risks
The Health Service Executive (HSE) has issued guidance regarding the risks of dehydration, heat exhaustion, and heatstroke during this period. Keith Leonard of the National Directorate Fire and Emergency Management emphasized the vulnerability of the elderly, urging the public to check on those living alone to ensure they remain cool and hydrated.
Water safety remains a primary concern as the public seeks relief in lakes and at beaches. Leonard advised against swimming in areas without lifeguards, noting that inland bodies of water such as reservoirs and disused quarries are significantly colder than the sea and contain hidden hazards. Additionally, the public is cautioned against lighting barbecues in wildland areas due to the elevated risk of wildfires.
While the immediate focus is on hydration and sun safety, the secondary risks—specifically the increased pressure on water-rescue services and the potential for wildfire—often catch the public off guard. The “stagnant” nature of this heat dome means that even overnight relief will be limited, which compounds the physiological stress on the body over several consecutive days.
Regional weather outlook
Conditions are expected to remain humid and dry for most of Tuesday, with cloud cover increasing in some regions overnight. Wednesday will see a mix of cloud and sunshine, with temperatures ranging from 23 to 29 degrees, with the southern half of the country likely to experience the highest heat.
Met Éireann warns that the heat will increase the risk of thunderstorms, which may develop in the northwest by Thursday. A shift toward cooler, more changeable conditions is expected over the weekend as rain moves in from the Atlantic.
International context
Ireland’s heatwave coincides with record-breaking temperatures across Europe. In France, officials have reported at least 18 deaths linked to the extreme heat, including two children found in a car. Meanwhile, meteorologists in Britain have indicated that June temperature records could be surpassed this week.
Frequently Asked Questions
When does the weather warning expire?
The Status Yellow high-temperature warning issued by Met Éireann is in effect until Friday morning.
What are the expected temperatures?
Daytime temperatures are forecast to exceed 27 degrees throughout the week, reaching up to 30 degrees on Thursday, with night-time minimums of 15 degrees.
What safety precautions should be taken near water?
The National Directorate Fire and Emergency Management advises swimming only in areas supervised by lifeguards, as lakes and quarries can be colder than the sea and present hidden dangers.
How are you managing to keep cool during this period of high humidity?
