The Cape and Islands teem with activity during high season: roughly late June to Labor Day. If you're dreaming of a classic shore vacation, this is prime time.
However, with the dream come daunting crowds and high costs. Fall has begun to rival summer in popularity, at least on weekends through late October, when the weather is temperate and the scenery remarkable. Many restaurants, shops, and hotels remain open in winter, too, making the area desirable even during the coldest months. The region enjoys fairly moderate weather most of the year, with highs typically in the upper 70s and 80s in summer, and in the upper 30s and lower 40s in winter. Snow and rain are not uncommon during the cooler months, and it can be windy any time.