Crater Lake is a stunning natural wonder that should be visited at least once in a lifetime. The best time to visit is during the summer months, from June to August, when the water is at its warmest and the area is at its most lush. During this time, the lake is usually calm and there are plenty of outdoor activities to enjoy such as fishing, swimming, and hiking. The summer months also offer an array of wildflowers and other wildlife, making it an ideal time to explore and appreciate nature. Visiting in the fall and winter can also be enjoyable, though the temperatures may be cooler and some areas may be harder to access.