Red Rocks Amphitheatre is an iconic outdoor stage in Denver that attracts many visitors throughout the year. The best time to visit Red Rocks Amphitheatre depends on your interests and preferences. If you want to see a concert or musical performance, the amphitheater is open from April to October. However, if you are looking for a quiet and scenic experience, the winter months offer breathtaking views with fewer people and lower temperatures. Whatever time of year you choose, the unique geological features and incredible views of Red Rocks Amphitheatre are not to be missed!