Winters in Barletta are mild and cool, with January averaging a chilly 4°C, while February's temperatures can drop as low as -5°C. Spring brings gradual warming, with April often reaching highs of 18°C and May temperatures soaring to 24°C. Summer is warm but not hot, with July and August temperatures peaking at around 33°C, while September cools slightly to 26°C. Autumn sees a return to milder conditions, with October averaging 11°C, followed by the cool November and December months, which average around 5°C in December.