The best time to go to Groton is during the late spring, summer, and early autumn months, from May through October, when the weather is most agreeable for exploring.May and June offer pleasant temperatures, typically in the high teens to low twenties Celsius (60s to low 70s Fahrenheit), making it ideal for outdoor activities like visiting local parks or taking boat tours. The crowds are generally lighter than in mid-summer, providing a more relaxed experience.July and August are the warmest months, with temperatures often reaching the mid-twenties to low thirties Celsius (mid-70s to 90s Fahrenheit). This is peak season for coastal activities, including trips to nearby beaches or exploring the Thames River. Days are long, allowing for extended sightseeing, and many local events and festivals take place during this period. Families often find these months great for a holiday due to school breaks and the abundance of activities suitable for all ages.September and October bring cooler, crisp air and often stunning autumn foliage, especially along the scenic routes. Temperatures range from the mid-teens to low twenties Celsius (low 60s to low 70s Fahrenheit). This period is excellent for those who enjoy hiking, visiting orchards, or exploring historic sites without the summer heat or crowds.
