April in Porto averages a daily high of 18.1°C with nights around 9.9°C. Expect roughly 12.8 wet days totalling 99.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Porto is June–September.
Based on PORTO, PO (1.9km), 1995–2024. 16 years of April data.