Typically, during September, this island off the coast of Massachusetts experiences a transition from summer to fall. Average high temperatures gradually decrease from the low 70s Fahrenheit (low 20s Celsius) at the start of the month to the mid-60s Fahrenheit (high teens Celsius) by the end. Ocean temperatures remain relatively warm, often in the low to mid-70s Fahrenheit (low to mid-20s Celsius), allowing for continued swimming and water activities. Rainfall is generally moderate, and while hurricane season is still active, direct impacts are less frequent than in earlier months.
Understanding the typical climatic conditions of this period is crucial for planning a visit. This shoulder season often offers a pleasant balance between warm weather suitable for outdoor activities and fewer crowds than the peak summer months. Historically, September has been a popular time for fishing, as certain species become more abundant in the cooler waters. Furthermore, the vibrant foliage begins its transformation, adding a scenic element to the island’s natural beauty.
