June, July, and August are the most crowded months in Moscow, and getting into popular attractions like the Kremlin can be difficult. It’s worth braving the crowds, though, to see the golden domes, bright white bell tower, intricate Fabergé eggs, and the rest of the impressive complex. There are sure to be crowds in Red Square during the summer, too, but you can’t miss St. Basil’s fairytale-like Cathedral, Lenin’s Mausoleum, the fanciful Kazan Cathedral, and the popular, upscale GUM shopping mall. Keep an eye on the forecast. Temperatures in summer reach into the 90s and it’s the rainiest period in Moscow.
Spring is shoulder season in Moscow, as well as a pretty time to visit. The flowers around the city come into bloom. To celebrate the end of a long winter, Maslenitsa, a religious and folk holiday, ushers in the new season with pancake feasts, traditional (and friendly!) fist fighting, bonfires, and other celebrations. Temperatures warm up to the 50s and 60s during the day, so enjoy a visit to one of Moscow’s many parks; there are almost 300 square feet of parks per person here. Kolomenskoye is a nice one, with a beautiful church that dates back to 1532.
Tourists are in shorter supply during the winter due to Moscow’s notorious cold, but if you enjoy a snowy landscape, pack some warm boots and go. The Russian Winter Festival at the end of December and beginning of January is a fun way to celebrate the best of the season—troika rides, ice hockey games, snowmen, and plenty of warm tea. Especially in winter, make use of the (heated) Metro public transit. Many of the underground stations feature art, including statues, stained glass windows, mosaics, and chandeliers.