The best time to visit Criccieth is during the late spring and summer months, from May to September, when the weather is generally mildest and the days are longer.During these months, you'll find the most reliable conditions for enjoying the outdoors, including walks along the beaches and coastal paths. The sea temperatures are also at their warmest, making it more pleasant for watersports or a dip in the Irish Sea.For those who enjoy a lively option, July and August are peak season, with more local events and attractions fully open. It's a great time for families, as the town and surrounding areas offer plenty of activities geared towards children, from exploring Criccieth Castle to enjoying ice cream on the promenade.If you prefer a quieter experience with fewer crowds but still good weather, May, June, and September are excellent choices.