The best time to go to Shillelagh is typically from late spring to early autumn, specifically between May and September, when the weather is most pleasant for exploring the outdoors.During these months, you'll find the warmest temperatures and the least rainfall, making it ideal for activities like hiking in the nearby Wicklow Mountains or exploring the local countryside. The longer daylight hours also mean more time to visit attractions such as the Coolattin Estate or simply enjoy the greenery of County Wicklow.For those who enjoy outdoor pursuits like walking or cycling, July and August offer the best conditions. The local trails and scenic routes are at their most accessible, and you're more likely to experience sunny days superb for picnics or leisurely drives through the picturesque landscape.If you prefer to avoid the busiest periods and still enjoy good weather, May, June, and September are excellent choices.