Last updated: August 27, 2025
Experience the January weather in Callao, Peru, where temperatures typically range from a comfortable 17°C (64°F) at night to a warm 27°C (81°F) during the day, averaging around 21°C (71°F). This month, prepare for occasional rain, with a total precipitation of 47 mm (1.9 in) spread across about 15 days, leading to a humid environment with an average humidity of 89%. The combination of warmth and moisture creates a vibrant atmosphere, perfect for exploring the coastal beauty of Callao while also enjoying the unique charm of its summer season.
In Callao, Peru, January brings a delightful coastal warmth, with temperatures ranging from a comfortable 17°C (64°F) at the lowest to a pleasant 27°C (81°F) at the peak. The month averages around 21°C (71°F), making it an inviting time for beach-goers and outdoor enthusiasts alike. As the season transitions into February, temperatures see a slight rise, hinting at an impending summer, with minimums reaching 18°C (65°F) and maximums soaring to 28°C (82°F). This trend of gradually increasing warmth continues into March before giving way to cooler months. Overall, January serves as a pleasant precursor to the hotter months ahead, characterized by moderate averages and a temperate climate that beckons visitors to enjoy everything the vibrant coastal city has to offer.
In January, Callao, Peru experiences an average precipitation of 47 mm (1.9 in) over approximately 15 days, marking it as one of the wetter months of the year. This pattern is indicative of the region's transitional climate, where moisture begins to accumulate in the early months. Following January, precipitation slightly increases in February to 53 mm (2.1 in) but then gradually retreats, with March recording 50 mm (2.0 in) before a significant drop in April to just 18 mm (0.7 in). As the months progress into the dry season, rainfall diminishes sharply, with May experiencing only 9 mm (0.4 in) and little to no precipitation in the ensuing months. This trend of decreasing rainfall culminates in a dry stretch lasting into the following months, illustrating a clear shift from the wetter start of the year to a predominantly dry climate by mid-year.
In January, Callao experiences a notable humidity level of 89%, setting the tone for a consistently moist summer. This high humidity persists into February, remaining at 89%, before slightly increasing to 90% in March, highlighting a trend of elevated moisture during the hotter months. As the weather shifts into late spring, humidity begins to decline, dropping to 83% in May, and continues on a downward trajectory through the cool months of June (69%) and July (56%). The transition back to more humid conditions resumes in August (50%), gradually increasing through the fall, culminating in December's humidity of 87%. This annual cycle paints a vivid picture of Callao's climate, characterized by its humid summers and drier winters, making it a unique coastal destination.
In January, Callao, Peru, experiences an intense UV Index of 14, categorizing the exposure as extreme with a burn time of just 10 minutes. This high level of UV radiation continues through the following months, maintaining the same index until March. Despite a slight dip in April to an index of 12, the threat remains significant. As the year progresses into May and June, the index transitions to a very high exposure category, requiring about 15 minutes for skin to burn. However, by August, the UV Index climbs back to 11 in an extreme category. This pattern persists into the final months of the year, peaking again with a UV Index of 14 in November. Such consistent extremes highlight the importance of sun protection in Callao—learn more about the local UV conditions by checking out the Callao UV Index.
UV Risk Categories
In January, Callao, Peru, basks in 270 hours of sunshine, setting the stage for a gradual upward trend that peaks over the following months. As summer unfolds, February brings a delightful jump to 301 hours, followed by March, which continues this sunny momentum with 321 hours. The sun's presence remains strong, making April and May particularly bright, with 320 and 331 hours respectively. The sun shines even brighter in August, reaching an impressive 335 hours, and stays consistent through the fall, with October hitting a remarkable 340 hours. This consistent increase in sunshine hours, peaking towards the year's end, creates an inviting atmosphere that enhances outdoor experiences and adds a vibrant sparkle to daily life in Callao.
In Callao, Peru, January presents a rather limited chance of sunny weather, with only a 6% likelihood of clear skies. As the year progresses, however, the probability of sunshine steadily increases, peaking at 55% in July. This upward trend indicates that while January may be gray and overcast, the transition into late autumn and winter offers more opportunities for bright and sunny days. By April, the chance of sun rises to 25%, and from there, it becomes increasingly likely to enjoy the warmth of the sun, especially during the mid-year months. Thus, if you're hoping for sunny weather, patience is key—longer days of sunshine await as the year unfolds.
In Callao, Peru, January heralds a month of vibrant 12 hours of daylight, a pattern that persists through February and March, creating an extended stretch of sunny days perfect for exploration and relaxation. As April arrives, daylight subtly begins to wane, settling at 11 hours through the winter months from May to August. This slight dip contrasts sharply with the return to 12 hours of daylight in September, restoring the sun-soaked ambiance. Interestingly, this equilibrium continues uninterrupted until the year's end, maintaining consistent daylight and ensuring that the charm of Callao is ever-present throughout the year.
In January, the winds in Callao, Peru, begin the year with a gentle average speed of 2.1 m/s (5 mph), offering a serene start to the summer season. As the months progress, these breezes remain relatively calm in February and March, stabilizing at 1.9 m/s (4 mph). However, a noticeable shift occurs in April, where the winds pick up slightly to 2.4 m/s (5 mph), heralding the beginning of more spirited gusts. Throughout the middle of the year, Callao experiences a steady increase, reaching a peak of 3.1 m/s (7 mph) in August. Following this surge, a gradual decline sets in, leading to more moderate winds in the latter months of the year. By December, the average wind speed settles back to 2.6 m/s (6 mph), completing a vibrant cycle of seasonal breezes that frame the coastal charm of this bustling port city.
Weather in Callao varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Callao, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, temperatures range from a minimum of 17°C (64°F) to a maximum of 27°C (81°F), with an average of 21°C (71°F). The month experiences about 47 mm (1.9 in) of precipitation over 15 days, all while maintaining a humidity level of 89%. In contrast, February sees slightly warmer temperatures, with a minimum of 18°C (65°F) and a maximum of 28°C (82°F), averaging 22°C (72°F). Rainfall increases to 53 mm (2.1 in) but is spread over just 12 days, and humidity remains steady at 89%. For more detailed insights on February weather, visit Callao weather in February.
January and March display similar temperature ranges, with both months experiencing a minimum temperature of 17°C (64°F) and a maximum of 27°C (81°F). However, March has a slightly higher average temperature at 22°C (72°F) compared to January's 21°C (71°F). Precipitation levels are quite comparable as well, with January receiving 47 mm over 15 days and March seeing 50 mm over 14 days. Additionally, the humidity levels are slightly elevated in March at 90%, versus January's 89%. For more detailed information about March weather in Callao, you can visit Callao weather in March.
In January, temperatures in Callao range from a minimum of 17°C (64°F) to a maximum of 27°C (81°F), with an average of 21°C (71°F). The month experiences a significant amount of rainfall, totaling 47 mm (1.9 in) over 15 days, while maintaining a high humidity level of 89%. In contrast, April features slightly cooler temperatures, with a minimum of 15°C (60°F) and a maximum of 26°C (79°F), and an average temperature of 20°C (69°F). Precipitation is notably lower in April at 18 mm (0.7 in), occurring over just 5 days, yet humidity remains constant at 89%. For more details on the weather conditions in Callao during April, you can check Callao weather in April.
In January, the weather is generally warmer and more humid, with average temperatures ranging from a minimum of 17°C (64°F) to a maximum of 27°C (81°F), accompanied by significant rainfall of 47 mm (1.9 in) over 15 days. In contrast, May offers milder temperatures, peaking at 25°C (78°F) and dipping to a minimum of 14°C (58°F). Furthermore, May experiences much less precipitation, with only 9 mm (0.4 in) reported over just one day, and slightly lower humidity at 83%. For more details on the weather in May, visit Callao weather in May.
In January, the weather is notably warmer, with temperatures ranging from a minimum of 17°C (64°F) to a maximum of 27°C (81°F) and an average of 21°C (71°F). This month also experiences higher precipitation, with about 47 mm (1.9 in) of rain spread over 15 days, resulting in a humid environment with around 89% humidity. In contrast, June sees cooler temperatures, dipping to a minimum of 15°C (59°F) and peaking at 21°C (71°F), with an average of 18°C (64°F). Remarkably, June is much drier, receiving only 10 mm (0.4 in) of precipitation over zero rainy days and lower humidity levels at 69%. For more detailed information, visit Callao weather in June.
January and July present notably different weather patterns. In January, temperatures range from a minimum of 17°C (64°F) to a maximum of 27°C (81°F), with an average of 21°C (71°F). This month also experiences higher humidity at 89% along with 47 mm of precipitation over 15 days, making it a wetter season. In contrast, July offers cooler conditions with a minimum temperature of 14°C (57°F) and a maximum of 21°C (69°F), averaging only 17°C (63°F). It is notably drier, with just 11 mm of precipitation and no rainy days, and the humidity drops to a comfortable 56%. For more detailed insights, you can check out Callao weather in July.
January and August exhibit contrasting weather patterns. In January, temperatures range from a minimum of 17°C (64°F) to a maximum of 27°C (81°F), accompanied by high humidity at 89% and significant rainfall of 47 mm (1.9 in) over 15 days. In stark contrast, August sees cooler temperatures, with a minimum of 14°C (57°F) and a maximum of 20°C (69°F), while enjoying much drier conditions, with only 10 mm (0.4 in) of precipitation and no rainy days. This shift from January's wet and humid climate to August’s cooler and drier weather highlights the significant seasonal differences in the region. For more details, check out Callao weather in August.
In January, the weather is markedly warmer, with average temperatures ranging from a minimum of 17°C (64°F) to a maximum of 27°C (81°F). This month also sees considerable humidity at 89% and significant precipitation, with 47 mm (1.9 in) of rainfall over approximately 15 days. In contrast, September is much cooler, featuring temperatures that range from a minimum of 14°C (57°F) to a maximum of 20°C (69°F). This month experiences a much drier climate, with only 10 mm (0.4 in) of precipitation on just 1 day and a much lower humidity of 53%. For a detailed look at September weather in Callao, you can visit Callao weather in September.
In January, the weather tends to be warmer and more humid, with average temperatures ranging from a minimum of 17°C (64°F) to a maximum of 27°C (81°F) and an average humidity of 89%. This month receives about 47 mm (1.9 in) of precipitation over approximately 15 days, making it quite damp. In contrast, October experiences cooler temperatures, with a minimum of 14°C (58°F) and a maximum of 21°C (71°F). It is also significantly drier, with only 10 mm (0.4 in) of precipitation spread over just 2 days and a lower humidity level of 68%. For more details, you can refer to Callao weather in October.
In comparison to January, the weather in November is generally cooler and drier. January sees temperatures ranging from a minimum of 17°C (64°F) to a maximum of 27°C (81°F), with an average of 21°C (71°F), while November's temperatures are slightly lower, with a minimum of 15°C (59°F) and a maximum of 23°C (74°F), averaging 18°C (65°F). Additionally, November experiences significantly less precipitation, with only 9 mm (0.4 in) over just 2 days, compared to January's 47 mm (1.9 in) across 15 days. Humidity levels are also lower in November at 81%, compared to January's higher 89%. For more details, check out Callao weather in November.
In January, the weather experiences slightly warmer temperatures compared to December, with averages around 21°C (71°F) and maximums reaching 27°C (81°F), while December sees an average of 20°C (68°F) and a high of 25°C (76°F). Additionally, January is notably wetter, with 47 mm (1.9 in) of precipitation over 15 rainy days, whereas December has a much drier climate with only 17 mm (0.7 in) of rainfall over just 3 days. Humidity levels remain relatively high in both months, with January at 89% and December at 87%. For more details, you can check Callao weather in December.
As January unfolds in Callao, the weather showcases a subtropical charm that differentiates it from other months. With warm maximum temperatures reaching 27°C (81°F) and an inviting average of 21°C (71°F), this coastal city offers a pleasant escape from the chillier seasons. However, it also brings increased humidity at 89% and frequent rain, with precipitation occurring on about 15 days and totaling 47 mm (1.9 in). While the warmth is welcoming, the moisture adds a tropical touch, making January a unique blend of comfort and refreshment. For a deeper dive into how this month fits into the overall climate, explore Callao Climate.