The best time to go to Chepstow is during the spring (April to June) and autumn (September to October) months, when the weather is generally pleasant and the town and surrounding Wye Valley are at their most picturesque.During spring, the countryside blossoms with vibrant greenery and wildflowers, making it ideal for walking and exploring the many trails. The temperatures are mild, typically ranging from 10°C to 18°C, which is comfortable for outdoor activities without being too hot.Autumn offers equally appealing conditions, with the Wye Valley famed for its stunning display of golden and russet foliage. The weather remains mild, usually between 10°C and 15°C, and there's often a crispness in the air superb for exploring Chepstow Castle or enjoying a boat trip on the River Wye.While summer (July and August) is also popular, it can be busier with more tourists, and temperatures can occasionally climb higher, sometimes making strenuous outdoor activities less comfortable.