The best time to visit Letterston is during the late spring and summer months, particularly from May to September, when the weather is generally mildest and most conducive for outdoor activities.During these months, you'll find the days are longer, offering more daylight hours to explore the Pembrokeshire countryside and coastline. Temperatures are typically pleasant, making it ideal for walking, cycling, or enjoying the nearby beaches. Many local attractions and businesses also operate with extended hours during this peak season.For those who enjoy coastal walks and exploring the Pembrokeshire Coast National Park, July and August offer the warmest weather, great for spending time by the sea. These months are also excellent for wildlife spotting, with many seabirds nesting along the cliffs and opportunities to see dolphins and porpoises off the coast.If you prefer a quieter experience with fewer crowds but still good weather, May, June, and September are excellent choices. The landscape is lush and green, and you can often find better deals on accommodation compared to the height of summer.