The best time to go to Keel, County Mayo, is during the summer months, from June to August, when the weather is at its mildest and the days are long.During these months, you'll find the most favourable conditions for enjoying Keel's outdoor activities, such as surfing, swimming, and exploring the stunning landscapes of Achill Island. Many of the local attractions and restaurants are fully operational, offering a full experience for visitors.For those who prefer a quieter visit with fewer crowds, the shoulder seasons of May and September can also be excellent. The weather is generally still pleasant, and you can often find good value on accommodation.