The weather around the Torre de Belém is typically mild, with temperatures ranging from 12 to 25 degrees Celsius. It experiences warm summers and mild winters, with occasional rain showers throughout the year. In summer months, humidity can be high due to its location on the Tagus River estuary. The average annual rainfall in this area is 812mm per year. During winter months, temperatures often drop below 10 degrees Celsius and there can be periods of light snowfall.