The best time to visit Otterlo is during the spring (April to June) and late summer/early autumn (September to October) when the weather is pleasant for outdoor activities and the natural landscape is at its most appealing.Springtime in Otterlo sees the Hoge Veluwe National Park bursting into life. The heather fields begin to show their first colours, and the forests are lush and green. Temperatures are generally mild, ranging from 10°C to 20°C, making it ideal for cycling, hiking, and exploring the park's outdoor sculptures. It's a particularly good time for couples who enjoy nature walks and quiet exploration.Late summer and early autumn offer similarly agreeable conditions. September, in particular, is known for the stunning purple bloom of the heather on the Veluwe, creating a picturesque backdrop for visitors. The temperatures are comfortable, typically between 15°C and 22°C, and the crowds from the peak summer months have thinned, allowing for a more relaxed experience. This period is also excellent for art enthusiasts looking to combine outdoor activities with visits to the Kröller-Müller Museum, as the cooler weather makes for comfortable indoor viewing after a cycle through the park.While the summer months (July and August) can be warm and sunny, they also tend to be the busiest, especially within the national park.