The best time to visit Cosheston is during the late spring and summer months, from May to September, when the weather is generally mildest and most enjoyable for exploring.During these months, you'll find the days are longer and warmer, making it ideal for enjoying the Pembrokeshire Coast National Park and its many outdoor activities. This period offers the best conditions for walking, cycling, and visiting the local beaches and historical sites.Families often find July and August particularly appealing as the school holidays coincide with the warmest weather, great for beach days at nearby places like Tenby or Saundersfoot. Many local attractions, such as Pembroke Castle or boat trips to Caldey Island, operate their full schedules during this peak season.For those who prefer a slightly quieter experience with pleasant weather, May, June, and September are excellent choices.