The best time to go to Dennis Port is during the summer months, from June to August, for classic beach holidays, or in the shoulder seasons of May and September for a quieter experience.For families looking for the quintessential Cape Cod beach holiday, July and August are ideal. The weather is consistently warm, great for swimming in Nantucket Sound, building sandcastles on Sea Street Beach, or enjoying the lively option of the village. All the ice cream parlours, mini-golf courses, and seafood shacks will be fully open and bustling.Couples or those seeking a more relaxed trip might prefer May or September. The weather is still pleasant, often warm enough for beach walks and outdoor dining, but the crowds are significantly smaller. You'll find it easier to get reservations at popular restaurants and enjoy the natural beauty of the Cape without the peak season hustle.