The best time to visit Grandhan is during the late spring and summer months, specifically from May to September, when the weather is most agreeable for outdoor activities.During these months, you'll experience warmer temperatures and longer daylight hours, which are ideal for exploring the natural beauty of the Ardennes region. This period is superb for travellers who enjoy hiking, cycling, or kayaking along the Ourthe River. The local flora is in full bloom, making for particularly scenic walks and drives.For those who enjoy a lively option and local culture, July and August are particularly good as many regional festivals and outdoor events take place.