Although Banff seems to be a year-round destination with three seasons (cold winter, warm summer, and transition spring and autumn), June to August and December to March are deemed to be the best time to visit Banff. Crowded and warm summers offer stunning views of Moraine and Vermilion Lakes, as they are frozen for most of the year. Hiking and biking is another pure pleasure for nature lovers. Winter is a prime time for skiing, snowshoeing, and skating. Christmas and New Years are the busiest times, getting less crowded and cheaper towards March. Bring sunscreen, as no matter the season, the sun is ruthless in alpine regions. A transition period from April to May is great for witnessing Banff's abundant wildlife and exploring Columbia Icefield, but hiking and driving is limited in some areas. Choose October if you are a passionate stargazer—Jasper Dark Sky Festival won't last forever.