The best time to visit Abereiddy is during the summer months, from June to August, when the weather is generally at its warmest and most consistent.During this period, you can expect average temperatures around 18-20°C, making it ideal for enjoying the coastline and outdoor activities. The longer daylight hours also mean more time to explore the Pembrokeshire Coast Path and spend at the Blue Lagoon. It's a great time for families to visit as the water is warmer for swimming and coasteering.If you prefer fewer crowds and don't mind slightly cooler temperatures, late spring (May) or early autumn (September) are also wonderful times to go. The weather can still be pleasant, with temperatures around 15-17°C, and the natural beauty of the area is still very much on display.