The best time to visit Iiyama depends on whether you prefer winter sports or warmer weather activities, with distinct peak seasons for each.For those interested in skiing, snowboarding, or other winter sports, the period from mid-December to early March offers the best conditions. This time of year sees consistent snowfall, ensuring ski resorts like Madarao Kogen and Tangram Ski Circus are fully operational with excellent powder. The crisp, cold air and snow-covered landscapes create a picturesque winter wonderland, ideal for travelers seeking a classic Japanese ski experience.Conversely, if you prefer hiking, cycling, or exploring the region's natural beauty without snow, late spring (May to early June) and autumn (late September to early November) are ideal. In spring, the cherry blossoms bloom, creating beautiful scenery, and the weather is pleasantly mild for outdoor activities. Autumn brings stunning fall foliage, particularly around Lake Nojiri and the surrounding mountains, making it a great time for scenic drives and walks.