Altamira's climate is characterized by mild winters and hot summers. From January to March, temperatures gradually warm up, with averages in the mid-20s Celsius, making it an ideal time for outdoor activities. As spring approaches, temperatures rise further, peaking at around 32-33 degrees Celsius in April and May, marking the start of the scorching summer months. The hottest period is July to September, with average highs barely dipping below 30 degrees Celsius, while nights offer some relief with lows around 23 degrees Celsius. Autumn brings a slight cooling trend, with temperatures returning to more comfortable averages by November and December.