The best time to visit Sunderland is generally during the late spring and summer months, from May to September, when the weather is mildest and there are more outdoor activities available.May and June offer pleasant temperatures, typically ranging from 10°C to 18°C, and longer daylight hours. This period is ideal for exploring the city's coastal paths, such as the Durham Heritage Coast, or enjoying the beaches at Roker and Seaburn without the peak summer crowds. It's also a good time for couples who want to enjoy walks and outdoor dining.July and August are the warmest months, with average temperatures between 15°C and 20°C, and are great for enjoying the seaside. Families often find these months best for visiting, as the beaches are at their liveliest, and attractions like Sunderland Museum & Winter Gardens are easily accessible. There are also more outdoor events and festivals during this peak season.September offers a continuation of pleasant weather, with temperatures often around 12°C to 17°C, and fewer tourists.