Banff is a true year-round destination, though the experience changes dramatically with the season.
Summer (June–August) is peak season. Lake Louise and Moraine Lake are accessible, wildflowers bloom in the alpine meadows, hiking trails are clear of snow above 2,000 metres by July, and temperatures in the valley are warm and pleasant (20–25°C typical, though rain is always possible). The parks are crowded — parking at the lakes fills before 9am — and accommodation prices are highest. Book months in advance.
Autumn (September–October) may be the finest time to visit. The larch trees in the Valley of the Ten Peaks and Larch Valley turn golden in late September — one of the great autumn spectacles in North America. Crowds thin noticeably after Labour Day weekend, prices drop, and the mountain light in autumn has a warmth that summer lacks. Some trails above 2,000 metres may have early snow by mid-October.
Winter (November–March) brings reliable snow and excellent skiing at Sunshine Village, Lake Louise, and Mt Norquay. The three ski areas are within 30 minutes of Banff town and together offer over 8,000 acres of terrain. Temperatures can drop to -25°C or below in January, but the valley is sheltered and clear days are common. The Banff Springs Hotel looks extraordinary in snow.
Spring (April–May) is the least predictable season. Snow lingers on high trails and roads into May, some attractions are closed, and the parks start to fill with wildlife — grizzly bears emerge from their dens, and elk calve in the valley meadows. A good time for wildlife watching and a poor time for mountain hiking.