The best time to visit Cohasset is during the summer months, from June to September, when the weather is warm and conducive to enjoying the coast.During this period, the average daytime temperatures range from 20°C to 27°C, with plenty of sunshine. This makes it ideal for coastal activities such as exploring the beaches at Sandy Beach or Black Rock Beach, enjoying a boat trip from Cohasset Harbor, or simply strolling along the picturesque streets. The town also hosts various outdoor events and festivals throughout the summer, adding to the experience.For those who enjoy outdoor activities like hiking or cycling, late spring (May) and early autumn (October) also offer pleasant conditions. The temperatures are milder, typically between 12°C and 18°C, and the crowds are smaller. The changing foliage in autumn, particularly along the scenic coastal roads and the paths around Whitney and Thayer Woods, is particularly lovely.