April in Weymouth averages a daily high of 13°C with nights around 6.4°C. Expect roughly 10.7 wet days totalling 49.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Weymouth is June–September.
Based on SWANAGE, UK (35.4km), 1995–2024. 29 years of April data.