High temperature warning as mercury could hit 30C
The warning states that maximum temperatures could reach in excess of 27C and are likely to drop no lower than 15C at night.
Potential impacts include water safety issues at lakes and beaches, the "possibility" of forest fires, uncomfortable sleeping conditions and heat stress.
The warning will be in operation until 6am tomorrow.
Uncomfortable sleeping conditions and heat stress were also listed as potential impacts of the high temperatures.
The forecaster added that forest fires are a possibility.
Senior Forecaster with Met Éireann Gerry Murphy has said that temperatures will approach record levels for July, but perhaps will not reach them this weekend.
Mr Murphy said that the current temperatures represent a hot spell rather than a heatwave, as it will last only four days before getting cooler next week.
He said that the midlands will be the hottest part of the country, in particular counties Westmeath and Roscommon in particular.
The RNLI has urged people planning to head for a swim in the sea or on waterways to exercise caution and be aware of rip currents.
Water Safety Ireland has also said that amid the sunshine and rising tides, the risk to people also goes up and urged people to enjoy activities in and around water responsibly.
#UV index for Saturday
🟠High under both clear and cloudy skies countrywide☀️☁️
Remember to stay #SunSmart and protect your skin & eyes from sun radiation🧴🕶️🧢⛱️
Also, let's prioritize safety & remain vigilant around the water🏊🛟
ℹ️ https://t.co/f7ZgRWWlY5 pic.twitter.com/xGoa26FvdV
— Met Éireann (@MetEireann) July 11, 2025
There will be cooler and fresher air moving into the southwest by tomorrow evening, which will move across the rest of the country on Monday.
Advice for dealing with high temperatures
The HSE has said that people most at risk during hot weather include:
Babies and young children
People over 65 and those with underlying health conditions, including heart and breathing problems as well as Alzheimer's disease and dementia
People who spend a lot of time outside or in hot places - such as those who work outdoors or the homeless - are also at high risk.
The advice for staying cool indoors is:
Turn off lights and appliances not in use as they generate heat
Close windows that face the sun during the day and open them at night when temperatures drop
Close curtains in rooms that are exposed to the sun, sprinkle water over the skin, or keep a damp cloth on the back of the neck
Use an electric fan (but only if the temperature is below 35C)
Outdoors, people should:
Stay in the shade
Avoid being outside, if possible, between 11am and 3pm - the hottest part of the day
Wear light and loose-fitting clothing that covers the skin
Wear a wide-brimmed hat and sunglasses
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