Last updated: January 18, 2025
Callao, Peru, exhibits a BWk climate classification according to the Köppen-Geiger system, characterized by its arid conditions and minimal rainfall. The region experiences a temperature range that highlights its unique coastal climate: a minimum of 14°C (57°F) in September, an average of 19°C (66°F) throughout the year, and peaking at a maximum of 28°C (82°F) in February. This moderate temperature profile, coupled with its coastal geography, shapes the local environment and influences the seasonal variations experienced by residents and visitors alike.
In Callao, Peru, temperature patterns reveal a marked seasonal trend, with warmer months generally occurring between January and March. During this period, minimum temperatures range from 17°C (64°F) to 18°C (65°F), with average highs around 22°C (72°F) to 28°C (82°F) in February, making it the warmest month. As the seasons transition into the cooler months from April to August, temperatures gradually decline, reaching minimums of 14°C (57°F) and average highs peaking around 21°C (71°F) in July. Autumn into winter sees these cooler averages persist, with temperatures hovering around 17°C (63°F) during the day and dropping slightly at night. However, temperatures begin to rise again in late spring, culminating in December with an average of 20°C (68°F) and maximums of 25°C (76°F). This cyclical nature of temperature in Callao underlines the coastal city's relatively mild climate year-round, dominated by subtle changes rather than drastic fluctuations.
In Ventanilla, Callao, and Carmen De La Legua Reynoso, the temperature ranges are quite consistent, with a minimum of 14°C (57°F) in September and reaching a maximum of 28°C (82°F) in February. For more details on the climate specifics in these areas, you can visit the following links: monthly temperatures in Ventanilla, monthly temperatures in Callao, and monthly temperatures in Carmen De La Legua Reynoso.
Precipitation in Callao, Peru, is predominantly concentrated in the warmer months, particularly from January to March, when rainfall peaks with averages of 47 mm (1.9 in) in January and 53 mm (2.1 in) in February. These months also experience the highest number of rainy days, with February featuring 12 days of precipitation, contributing to the overall seasonal wetness. As the wet season transitions to the dry months, March experiences a slight decrease in rainfall to 50 mm (2.0 in), but the trend of reduced precipitation continues, with April seeing a significant drop to just 18 mm (0.7 in).
Starting in May, the climate becomes notably drier, with monthly rainfall plummeting to 9 mm (0.4 in), and continuing to hover around this minimal mark through August, which records nearly 10 mm (0.4 in). The dry season maintains its hold as June and July see no significant precipitation, resulting in clear skies and little moisture accumulation. This dry spell is somewhat alleviated in the latter months of the year, with slight increases in precipitation in November (9 mm) and December (17 mm), as the region prepares to re-enter the wetter season, although the overall rainfall remains significantly lower compared to the first quarter of the year.
In Callao, Peru, sunshine duration displays a remarkable seasonal trend, where the summer months from January to March stand out as the sunniest periods. January begins the year with a solid 270 hours of sunshine, but it is February that shines the brightest, boasting 301 hours of glorious sunlight. March continues this upward trajectory, peaking at 321 hours as the summer reaches its zenith. This surge in sunshine contributes to a vibrant atmosphere, making these months particularly appealing for outdoor activities and tourism, as longer days provide ample opportunities to explore the coastal beauty.
As the year progresses into the months of April through October, sunshine hours remain impressively high, with slight variations. Notably, May experiences a rise to 331 hours, followed by peak sunshine in October at 340 hours. This highlights a steady descent from the summer intensity but still maintains considerable sunlight, ensuring that the climate remains inviting. However, the winter months bring about a gradual decline in daylight, particularly from June through September, although hours remain relatively consistent, averaging around 313 to 335 hours. This extended sunny period continues into early winter, with December receiving 338 hours, thus solidifying Callao's reputation as a destination with abundant sunshine year-round, despite minor fluctuations.
The UV Index in Callao, Peru, illustrates significant seasonal patterns, particularly during the summer months of January through March, where it consistently reaches an extreme level of 14. This indicates a very high risk of harm from unprotected sun exposure, with a burn time of just 10 minutes for individuals with fair skin. As summer transitions into fall, the UV Index dips slightly but remains in the extreme category at 12 for April and climbs back to 10 in May. These readings signal the importance of effective sun protection for anyone spending time outdoors during these months, as ultraviolet radiation remains potent.
In the winter months, the UV Index holds steady at 9 to 11, classified as very high to extreme, with marginal burn times extending to 15 minutes in May, June, and July. Interestingly, despite the cooler weather, UV exposure remains a concern, particularly in August, September, and October, as the index ranges from 11 to 13. November marks a return to an extreme level of 14, urging residents and visitors alike to maintain vigilance against UV radiation year-round. This data underscores the persistent threat of high UV levels in Callao, necessitating protective measures regardless of the season to mitigate skin damage and other health risks associated with excessive sun exposure.
UV Risk Categories
In Callao, Peru, daylight duration remains notably consistent throughout the year, with 12 hours of daylight during the summer months of January, February, and March. This stable pattern facilitates a pleasant environment, allowing residents and visitors to enjoy ample time for outdoor activities and exploration. The extended daylight in the summer months complements the high sunshine and UV Index, creating an inviting atmosphere that encourages engagement with the vibrant coastal landscape.
As the seasons transition into autumn and winter, daylight duration slightly diminishes to 11 hours from April through August. However, this reduction is minimal, with daylight remaining quite stable even during the cooler months. Notably, daylight duration rebounds to 12 hours once again from September through December, signaling the onset of spring and summer. Overall, Callao's relatively consistent daylight hours throughout the year contribute to its year-round appeal, making it an attractive destination for sun-seekers and adventurers alike.
Callao, Peru enjoys a mild, coastal climate characterized by warm temperatures and minimal rainfall. Average temperatures range from a low of 14°C (57°F) in July and August to a high of 27°C (81°F) in February and March, with humidity typically present. Precipitation is light, peaking in January at 47 mm and dropping to around 9 mm from May to November. The region enjoys abundant sunshine, particularly from May to October, when monthly totals can exceed 300 hours. For more details, visit Callao climate.
Carmen De La Legua Reynoso, Peru, experiences a mild climate with average temperatures ranging from 17°C (63°F) in July and August to 22°C (72°F) from January to March. The city sees the most rainfall in January (47 mm) and February (53 mm), tapering off to minimal precipitation during the dry months of June to October. Sunshine is abundant, with May boasting the highest hours at 331, while October enjoys 340 hours of bright sunshine. Overall, the climate is characterized by warm temperatures and a distinct wet season, making it a pleasant location year-round. For more details, visit Carmen De La Legua Reynoso climate.
The climate in Ventanilla, Peru, features mild temperatures throughout the year, with averages ranging from 17°C (63°F) in July and August to 22°C (72°F) in February and March. Rainfall is minimal, peaking in January at 47 mm (1.9 in) and decreasing significantly from May onwards. Sunshine is abundant, with the highest hours noted in October, reaching 340 hours. This creates a pleasant environment for outdoor activities year-round. For more detailed information, visit Ventanilla climate.
In conclusion, Callao, Peru, offers a compelling climate characterized by a unique interplay of temperature, precipitation, sunshine duration, UV Index, and daylight hours. The region experiences warm summers with a distinct rainy season, creating a diverse environment that supports various activities throughout the year. Callao's abundant sunshine, particularly during the peak months from January to March, combined with a high UV Index, emphasizes the importance of sun protection. The steady daylight duration empowers residents and visitors to maximize their outdoor experiences. Collectively, these climatic features not only enhance Callao's allure as a destination but also underscore the necessity of understanding local weather patterns to foster safe and enjoyable engagements with this vibrant coastal city.