August in Sunderland averages a daily high of 20°C with nights around 11.5°C. Expect roughly 13.5 wet days totalling 60.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Sunderland is June–September.
Based on DURHAM, UK (20km), 1995–2024. 28 years of August data.