The best time to go to Castle Ashby is during the late spring and summer months, from May to September, when the weather is generally at its finest for exploring the estate and surrounding countryside.During these months, the gardens are in full bloom, offering a beautiful setting for walks and outdoor activities. The longer daylight hours mean you'll have more time to enjoy the extensive grounds, including the Capability Brown designed landscape and the various garden areas. This period is ideal for those who appreciate natural beauty and wish to spend time outdoors.For those interested in local events and outdoor pursuits, the summer often features various open-air activities and festivals in the wider Northamptonshire area, making it a good time to combine a visit to Castle Ashby with other regional attractions.