Subzero temperatures and snow can set in up to two months before winter officially begins in December. Blanketed in fresh snow, Moscow is magically hushed and cleansed, and Muscovites revel in the crispness of the air. Days are often gloriously sunny, and the temperature only a few degrees below zero, so skiing and sledging are popular pursuits. The secular New Year and Orthodox Christmas in early January are occasions for shopping and merrymaking, but at some point a cold snap will send the temperature down to -20°C or lower, while traffic and thaws turn the snow into mounds and lakes of black ice or brown slush, which linger on until late March.
Finally, make sure you bring the right gear. Lots of layers, a hat and waterproof footwear with nonslip soles are essential for winter. A compact rainproof jacket will protect you from showers in the spring or fall. Shorts and t-shirts are fine for summer, but pack long pants or a skirt for visiting monasteries, the ballet or dining out – and a mosquito net to drape over your bed if you’re unsure that your lodgings have screens on the windows.