Callao experiences a mild climate year-round, with temperatures rarely dropping below 11°C or rising above 30°C. The city's temperature is generally cooler during the months of April to August, with averages ranging from 16°C to 18°C. In contrast, the warmer months are from September to March, with average highs reaching up to 28°C in January and February. Spring (September to November) brings a slight increase in temperatures, while winter (June to August) is the coolest period of the year. Overall, Callao's temperature fluctuations are relatively minor, with minimal seasonal variation throughout the year.