The best time to go to Lough Eske is during the summer months, from June to August, when the weather is generally at its finest.During summer, you can expect longer daylight hours and milder temperatures, making it ideal for outdoor activities like exploring the Bluestack Mountains or enjoying a boat trip on Lough Eske itself. This period is great for those who want to make the most of the natural beauty of County Donegal.For travellers interested in a quieter experience, the shoulder seasons of May and September offer a lovely alternative. The weather is still pleasant for walking and sightseeing, but there are fewer visitors. You might also find better value on accommodation and activities during these months.