Holly O'Neill presents the Monday weather forecast for Ireland, noting a start with mist and fog that lifts to bright spells, while the south remains cloudier with drizzle. Highs range from 8 to 13 degrees, with rain and drizzle extending over southern coastal regions overnight. Tuesday brings damp conditions to the south and cooler temperatures, while Ulster stays mostly dry. The outlook for the week ahead indicates a gradual shift to more unsettled weather with increased rain and wind.