While Cavan is lovely year-round, the best time to visit for outdoor activities and comfortable sightseeing is typically from late spring to early autumn, specifically May through September.During these months, you'll experience milder temperatures and longer daylight hours, which are ideal for exploring Cavan's many lakes, forests, and walking trails. The weather is generally more settled, making it superb for boating on Lough Oughter or enjoying a round of golf at one of the county's courses. This period also often sees local festivals and events, adding to the experience.For those interested in fishing, particularly pike and coarse fishing, the months of May, June, and September are particularly favored as the water temperatures are optimal, and the fish are generally more active.