The best time to visit Windham, Maine, is during the summer months, from June to August, for warm weather and outdoor activities, and during the fall, from September to October, for stunning foliage.Summer is ideal for families and anyone looking to enjoy Windham's lakes and outdoor recreation. The weather is typically warm and sunny, great for swimming, boating, and fishing on Sebago Lake or Little Sebago Lake. Many local businesses, including ice cream shops and seasonal restaurants, are fully open, contributing to a lively option.For those who appreciate natural beauty and cooler temperatures, the fall season is exceptional. The landscape transforms with vibrant reds, oranges, and yellows, making it a prime time for scenic drives and hiking.