The best time to go to Lismore is from late spring to early autumn, specifically May through September, when the weather is mildest and the gardens are at their most beautiful.This period typically offers the most pleasant conditions for exploring Lismore Castle Gardens, a major attraction, and for enjoying outdoor activities. Expect average temperatures between 15°C and 20°C, with longer daylight hours. While rain is always a possibility in Ireland, these months generally see less of it than the rest of the year.Couples looking for a romantic getaway will find these months ideal for strolling through the historic gardens and along the River Blackwater. Many local events and festivals, such as the Lismore Immrama Festival of Travel Writing, also take place during the summer, adding to the experience.Solo travellers who enjoy walking, cycling, and exploring historical sites will also appreciate the favourable weather.