Valongo, Portugal experiences a mild climate with distinct seasonal variations. Winters are cool and wet, with temperatures rarely dipping below freezing point, averaging around 7°C in January and 11°C in February. As spring approaches, temperatures gradually rise, reaching an average of 14°C by April and May. Summers are warm to hot, with July and August being the hottest months, averaging around 19°C. Autumn brings a gentle decline in temperature, returning to cooler averages by November and December.