September is the most popular time to visit Cumberland, Maine, as summer transitions into autumn. This period attracts both adventure seekers and families looking to enjoy the outdoors before the cooler months arrive. From July to September, the peak season is characterised by vibrant community activities, including local farmers' markets and outdoor festivals, which create a lively option.During September, visitors can enjoy mild temperatures ranging from 10 to 20 degrees Celsius, making it an ideal time for outdoor activities such as hiking, cycling, and exploring the scenic trails of the nearby Bradbury Mountain State Park. The stunning fall foliage begins to make its appearance, providing a picturesque backdrop for sightseeing and leisurely walks through the charming town.For those seeking a more budget-friendly option, consider planning your visit in November. While this month is quieter, it offers a unique opportunity to experience Cumberland's tranquillity and the beauty of the late autumn landscape. You can also benefit from lower holiday rental rates during this time, making it an appealing choice for a peaceful getaway.Ultimately, the best time to book a holiday rental in Cumberland depends on whether you prefer the bustling energy of the summer months or the serene beauty of autumn.