The best time to visit Mathry for pleasant weather and outdoor activities is typically from late spring through early autumn, specifically May to September.
During these months, you'll experience the mildest temperatures and less rainfall, making it ideal for exploring the Pembrokeshire Coast Path, visiting local beaches, and enjoying the countryside. The days are longer, allowing for more time to see the sights and participate in outdoor pursuits.
For those interested in hiking and coastal walks, June, July, and August offer the warmest conditions, with average temperatures often in the high teens or low twenties Celsius. This period is great for enjoying the scenic beauty of the Pembrokeshire Coast National Park, which Mathry sits within. You'll find many opportunities for birdwatching and spotting local wildlife along the cliffs and in the coves.
If you prefer to avoid the busiest summer crowds but still want good weather, May and September are excellent choices. The weather is still generally favourable for outdoor activities, but the popular attractions and walking trails will be quieter.