Spring and early summer (May–June) and autumn (September–October) are the best times to visit. Temperatures are mild, the light is clear and angled, and the canyon country looks at its most vivid. Bryce Canyon's rim trail and Cedar Breaks are both fully accessible in these months.
July and August are the peak season for the national parks and bring the region's highest temperatures — over 85°F in the valley — along with afternoon thunderstorms that can make trail conditions unpredictable. Accommodation in Bryce Canyon City and Springdale sells out well in advance; staying in Panguitch is both cheaper and easier to book. June is when the annual Quilt Walk Festival takes place, drawing visitors who enjoy the small-town character.
Winter (November to March) closes Cedar Breaks and some higher roads but leaves US-89, Red Canyon, and much of Bryce Canyon accessible. The park in winter — hoodoos tipped in snow — is genuinely spectacular and nearly empty. Panguitch sits at 6,600 feet so nights are cold and snow is possible, but the town stays open and the roads are maintained.