Last updated: August 27, 2025
In Callao, Peru, April brings a refreshing climate characterized by mild temperatures and moderate humidity. The maximum temperature can reach 26°C (79°F), while the average settles around 20°C (69°F), providing a comfortable atmosphere for outdoor activities. Nighttime coolness drops to a minimum of 15°C (60°F), making evenings particularly pleasant. Although the month sees 18 mm (0.7 in) of rainfall spread over 5 days, the overall weather remains conducive to exploration. With humidity levels soaring to 89%, visitors can expect a vibrant coastal ambiance as Callao transitions from the warm summer months.
In April, Callao, Peru, experiences a gentle shift in temperature, with minimums dipping to 15°C (60°F) and averages resting at a comfortable 20°C (69°F). The maximum temperature reaches 26°C (79°F), reflecting a mild yet pleasant climate as the city transitions towards the cooler months. Compared to the warmer preceding months of January through March, April's temperatures hint at an emerging coolness, setting the stage for the approaching winter season. The overall trend shows a gradual decrease in temperatures as the year progresses, making April an ideal time for outdoor activities without the sweltering heat.
In April, Callao, Peru experiences a marked decline in precipitation, receiving only 18 mm (0.7 in) of rain over just 5 days. This significant drop follows the wetter months of January through March, where rainfall consistently exceeded 47 mm each month, highlighting a seasonal transition toward drier conditions. As the city heads into May, precipitation dips even further to 9 mm (0.4 in), with rainfall becoming increasingly scarce. This trend indicates a shift into the driest months of the year, where April serves as a bridge between the lush rains of early year and the arid climate that characterizes Callao's winter season.
In April, humidity levels in Callao, Peru remain relatively high at 89%, mirroring the consistent moisture seen in the preceding months of January through March. This slight decrease from the peak humidity in March suggests the region is transitioning towards drier conditions, which will become more pronounced in the coming months. By May, humidity drops further to 83%, and notably declines during the winter months, with July and August experiencing the driest conditions at 56% and 50%, respectively. Thus, April serves as a pivotal month, bridging the humid summer season with the approaching dryness of winter.
In April, Callao, Peru experiences a UV Index of 12, maintaining its classification within the extreme exposure category. This intensity signifies that the risk of harm from unprotected sun exposure remains high, with a rapid burn time of just 10 minutes. As we transition from the peak summer months of January through March, where the UV Index consistently reaches 14, there is a slight dip, but caution is still essential. The following months gradually decrease in UV intensity, moving into the very high category, yet the importance of sun protection remains crucial. For more insights on UV levels throughout the year, visit Callao UV Index.
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April in Callao, Peru, showcases a delightful balance of sunshine with approximately 320 hours of radiant daylight. This month follows March's peak with 321 hours, maintaining a close-knit connection to spring's warmth. As the year progresses, there's a clear upward trend in sunshine hours, peaking in the heart of the year with May boasting 331 hours. The gradual increase in daylight during these autumn months is both invigorating and encouraging, creating the perfect backdrop for outdoor adventures. With October promising even more sunshine at 340 hours, Callao enters a seasonal pattern that invites residents and visitors alike to embrace the vibrant allure of the Peruvian coast.
As the seasons shift in Callao, Peru, April marks a notable increase in the likelihood of sunny weather, with a 25% chance of clear skies. This improvement is a welcome change compared to the previous months, where sun exposure lingered around a modest 6% to 15%. The trend continues upward into May, where the chances of sunshine leap to 50%, indicating the arrival of a sunnier phase as winter approaches. Following this pattern, June and July also promise more sun, with 40% and 55% chances, respectively. Thus, for those planning a visit to Callao, April serves as a pivotal month, signaling the start of a brighter period that invites outdoor activities and exploration.
In April, Callao, Peru experiences a slight reduction in daylight, with the sun gracing the sky for 11 hours. This marks a transition from the consistent 12-hour days of the earlier months, such as January through March. As the year progresses, daylight remains at 11 hours through May, June, July, and August, showcasing a harmonious consistency in the longer nights of the mid-year. Interestingly, as September approaches, the daylight begins to extend once more, returning to 12 hours as the city transitions into spring. This rhythmic pattern highlights the unique way Callao balances the annual cycle of daylight, creating a predictable yet captivating environment throughout the year.
As April unfolds in Callao, Peru, the average wind speed rises to 2.4 m/s (5 mph), marking a subtle shift from the calmer breezes of the preceding months. This gentle increase is an early indicator of the evolving climate as the coastal region transitions into the more dynamic wind patterns of late autumn. Following April, wind speeds consistently climb, reaching 2.6 m/s (6 mph) in May and peaking at 3.1 m/s (7 mph) by August. The steady escalation in winds not only invigorates the sea air but also heralds the approach of winter, promising invigorating days ahead for residents and visitors alike.
Weather in Callao varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Callao, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between April and January, April tends to be slightly warmer with average temperatures ranging from a minimum of 15°C (60°F) to a maximum of 26°C (79°F), while January's temperatures are consistently higher, with a minimum of 17°C (64°F) and a maximum of 27°C (81°F). April experiences significantly less precipitation, recording only 18 mm (0.7 in) over five days, contrasted with January's much wetter conditions, where precipitation reaches 47 mm (1.9 in) across 15 days. Despite the differences in rainfall, both months maintain a high humidity level of 89%. For a more detailed look at January weather patterns, you can refer to Callao weather in January.
When comparing the weather in April and February, we see some notable differences. February tends to be slightly warmer overall, with minimum temperatures around 18°C (65°F) and maximum temperatures reaching 28°C (82°F). In contrast, April's temperatures are milder, with a minimum of 15°C (60°F) and a maximum of 26°C (79°F). Additionally, February experiences significantly more rainfall, totaling 53 mm (2.1 in) over approximately 12 days, compared to April's lighter precipitation of 18 mm (0.7 in) over just 5 days. Interestingly, both months share the same humidity level of 89%, creating a consistently humid atmosphere. For more detailed information on February's conditions, you can check out Callao weather in February.
April's weather presents a slight shift compared to March, with temperatures seeing a modest decrease. In April, the minimum temperature is around 15°C (60°F), with an average of 20°C (69°F) and a maximum reaching 26°C (79°F). This contrasts with March, which has a higher minimum of 17°C (64°F) and averages around 22°C (72°F), peaking at 27°C (81°F). Additionally, April experiences significantly less precipitation, totaling just 18 mm (0.7 in) over 5 days, while March sees much heavier rainfall at 50 mm (2.0 in) spread across 14 days. Both months maintain high humidity levels, with April at 89% and March slightly higher at 90%. For a more detailed comparison, you can also check Callao weather in March.
In April, the weather tends to be slightly warmer than in May, with minimum temperatures reaching 15°C (60°F) and an average of 20°C (69°F), peaking at 26°C (79°F). April also experiences higher humidity at 89% and more rainfall, with 18 mm (0.7 in) of precipitation over five days. In contrast, May sees a minor dip in temperatures, with a minimum of 14°C (58°F) and an average of 19°C (66°F), peaking at 25°C (78°F). It is much drier, with only 9 mm (0.4 in) of rain over just one day, and lower humidity at 83%. For more details, you can check the weather specifics for Callao weather in May.
In April, the weather is typically warmer, with average temperatures ranging from a minimum of 15°C (60°F) to a maximum of 26°C (79°F), and an overall average of 20°C (69°F). This month also experiences more rainfall, with about 18 mm (0.7 in) of precipitation over five days, resulting in higher humidity levels at 89%. In contrast, June sees cooler temperatures with an average of 18°C (64°F), a maximum of 21°C (71°F), and a minimum of 15°C (59°F). This month is much drier, boasting only 10 mm (0.4 in) of precipitation, and without any rainy days, which lowers the humidity to 69%. For more specifics on weather conditions, you can check Callao weather in June.
April and July present contrasting weather patterns, particularly in temperature and humidity. April enjoys slightly warmer temperatures, with averages around 20°C (69°F) and maximums reaching 26°C (79°F), alongside higher humidity levels at 89%. While April sees about 18 mm (0.7 in) of rainfall over five days, July experiences a drier climate, with only 11 mm (0.4 in) of rain and no precipitation days. The cooler July temperatures average around 17°C (63°F), with a maximum of 21°C (69°F) and lower humidity levels at 56%, creating a more comfortable atmosphere for outdoor activities. For a detailed look at July's weather, visit Callao weather in July.
When comparing the weather in April and August, notable differences emerge in both temperature and humidity. April experiences a warmer climate with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 26°C (79°F), accompanied by higher humidity levels at 89%. In contrast, August tends to be cooler, with temperatures fluctuating between 14°C (57°F) and 20°C (69°F), and significantly lower humidity at 50%. Additionally, while April sees about 18 mm (0.7 in) of precipitation over five rainy days, August remains largely dry with only 10 mm (0.4 in) of rain and no precipitation days. For more details about the weather in Callao during August, you can check Callao weather in August.
April and September present distinct weather patterns. In April, temperatures range from a minimum of 15°C (60°F) to a maximum of 26°C (79°F), with an average of 20°C (69°F). This month experiences higher humidity at 89% and receives more rainfall, totaling 18 mm (0.7 in) over about 5 days. In contrast, September offers cooler temperatures, with a minimum of 14°C (57°F) and a maximum of 20°C (69°F), averaging only 17°C (62°F). The month is characterized by significantly lower humidity at 53% and less precipitation, with a total of just 10 mm (0.4 in) over 1 day. For more details on September weather, you can check Callao weather in September.
When comparing April and October weather, we observe distinct differences in temperature and precipitation. April tends to be warmer, with average temperatures ranging from a minimum of 15°C (60°F) to a maximum of 26°C (79°F), while October offers a cooler average, with temperatures between 14°C (58°F) and 21°C (71°F). Additionally, April experiences more precipitation, totaling 18 mm (0.7 in) over about five days, whereas October sees only 10 mm (0.4 in) across just two days. Humidity also varies, remaining higher in April at 89%, compared to October's lower 68%. For a more detailed look, you can explore Callao weather in October.
In April, temperatures range from a minimum of 15°C (60°F) to a maximum of 26°C (79°F), with an average of 20°C (69°F). The month experiences about 18 mm (0.7 in) of rainfall spread over approximately 5 days, resulting in a high humidity level of 89%. In contrast, November presents a slightly cooler climate, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 23°C (74°F) and an average of 18°C (65°F). Precipitation is also lower in November, totaling 9 mm (0.4 in) over just 2 days, and the humidity decreases to 81%. For more details, you can check the Callao weather in November.
In April, the weather is characterized by slightly warmer temperature ranges, with a minimum of 15°C (60°F) and a maximum of 26°C (79°F), compared to December, which maintains a minimum temperature of 16°C (62°F) and a maximum of 25°C (76°F). Both months have a similar average temperature of around 20°C (68°F), reflecting mild conditions. Precipitation levels are comparable, with April experiencing 18 mm (0.7 in) over 5 days and December having slightly less at 17 mm (0.7 in) over only 3 days. Humidity levels are also similar, with April being slightly more humid at 89% compared to December's 87%. For more details on December weather, you can refer to Callao weather in December.
In April, Callao embraces the transition into cooler temperatures, characterized by an average of 20°C (69°F) that sets a distinct tone from the warmer months. With maximums reaching 26°C (79°F) and minimums dipping to 15°C (60°F), this month offers a refreshing respite from the heat. Although the humidity remains high at 89%, it's paired with only 18 mm (0.7 in) of precipitation spread over five days, balancing moisture with ample sunny spells. This blend of moderate warmth and intermittent showers makes April an ideal time to enjoy the coastal charm of Callao. For a deeper insight into the patterns of weather throughout the year, visit Callao Climate.