Met Éireann has issued a weather advisory predicting a significant drop in temperatures in Ireland starting next week. An Arctic airmass will bring daytime highs between 2 to 6 degrees Celsius and night-time lows below freezing, leading to widespread frost and ice. Persistent rain is expected, along with sleet and possible snow, particularly in Ulster. The advisory warns of hazardous ground conditions and poor visibility from Monday onward, following an unusually mild start to the month. Forecasters advise caution for travel as conditions worsen.