For the most pleasant weather and access to outdoor activities, the best time to visit New Radnor is from late spring to early autumn, specifically May through September.During these months, the weather is generally milder with longer daylight hours, making it ideal for exploring the Radnor Forest, walking the Offa's Dyke Path, or enjoying the local walking trails around the town. The landscape is lush and green, and many local attractions, such as St. Stephen's Church and the New Radnor Castle ruins, are best experienced in good weather.For those keen on hiking and outdoor adventures, July and August offer the warmest temperatures, though they can also be the busiest. However, New Radnor tends to remain a tranquil destination even during peak season.