Tourism is a climate-dependent industry, and many destinations owe their popularity to their pleasant climates during traditional holiday seasons. This article explores the potential implications of climate change for global tourism, with special emphasis on seasonality. Combination of two climate change scenarios with the Tourism Climatic Index reveals that the locations of climatically ideal tourism conditions are likely to shift poleward under projected climate change. Whereas destinations such as the Mediterranean may see shifts in their peak seasons from summer months to current shoulder periods, regions in higher latitudes are likely to experience a lengthening of their summer seasons. The effects of these changes will depend greatly on the flexibility demonstrated by institutions and tourists as they react to climate change, with substantial implications for both spatial and temporal redistribution of tourism activities.