The best time to visit Walchensee is during the warmer months, from May to September, when the weather is ideal for outdoor activities and enjoying the lake.During May and June, the landscape is lush and green, and the temperatures are pleasantly mild, typically ranging from 15°C to 22°C. This period is excellent for hiking and cycling around the lake or exploring the surrounding Bavarian Alps. You'll find fewer crowds compared to the peak summer months, allowing for a more serene experience.July and August offer the warmest weather, with average temperatures often between 20°C and 26°C, making it great for swimming, paddleboarding, and sailing on the lake. The water temperature is at its highest, providing a refreshing dip. However, these months are also the busiest, especially on weekends, so expect more people on the trails and at popular spots like the Herzogstandbahn cable car.September brings cooler, crisp air, often with clear skies and stunning autumn colours in the surrounding forests. Temperatures usually range from 12°C to 18°C. It's a fantastic time for scenic walks and enjoying the natural beauty without the summer crowds.