Aveiro's weather is generally mild, with temperatures gradually warming up throughout the year. In winter, January and February are cool, with average highs around 8-12°C, while still experiencing occasional cold snaps down to -3°C. As spring arrives in March and April, temperatures rise steadily, reaching an average of 14°C by May, which marks the beginning of a warm summer season. June and July are hot, with temperatures often soaring above 30°C, but August and September remain pleasant, still averaging around 19°C. Autumn is mild, with October and November experiencing cooler temperatures before the cycle starts again in December.