With its impressive architecture, an abundance of monuments and museums, Capital City has a lot to offer at any time of year. However, the best time to visit Washington, D.C. are spring and autumn, when the nice weather allows to explore and enjoy all of its beautiful nooks. Late March to mid-April is a great time to see abundant cherry blossoms and welcome spring in the U.S. capital. In the autumn, the foliage in D.C. becomes stunning, and the air temperature cools down to a more comfortable feel. Don't miss the Halloween Parades in October or the National Christmas Tree Lighting Ceremony in November. During the hot summer, discover the city by bicycle, kayak or canoe, hike Mount Vernon Trail, and see blooming water lilies at the Kenilworth Aquatic Garden.