Last updated: August 27, 2025
In January, La Unión, Peru experiences a tropical climate characterized by warm temperatures and high humidity. The maximum temperature can soar to 33°C (92°F), while the average settles around 25°C (78°F), providing a comfortable atmosphere for outdoor activities. Nighttime brings a cooling relief, with temperatures dipping to a pleasant 18°C (65°F). This month witnesses an average precipitation of 14 mm (0.6 in), distributed over just 3 rainy days, contributing to the region's lush landscapes. With humidity levels peaking at 89%, visitors can expect a vibrant yet muggy environment, perfect for experiencing the rich culture and natural beauty of La Unión.
In La Union, Peru, January boasts a delightful tropical climate characterized by temperatures that range from a comfortable 18°C (65°F) at night to a warm 33°C (92°F) during the day. With an average temperature of 25°C (78°F), January sets the tone for the warm, inviting months ahead. As the year progresses into February and March, you’ll notice a slight upward trend in the minimum temperatures, climbing to 19°C (67°F) and 20°C (68°F) respectively, while the maximum temperatures remain stable at 33°C (92°F). This consistent warmth gives way to cooler averages as the months transition into April and May, where temperatures dip slightly. Notably, the cooler months from June to August experience a drop in both minimum and maximum temperatures, hitting lows of 15°C (59°F) and highs around 27°C (80°F). As the year cycles back to December, La Union enjoys a gentle warming, hinting at the vibrant climate that makes this region a year-round attraction.
In January, La Union experiences relatively low precipitation, with a total of 14 mm (0.6 in) spread over just 3 days of rain. This marks the start of the year, setting a trend of increasing moisture as the months progress. In February, rainfall jumps to 43 mm (1.7 in), and the frequency rises to 5 days, indicating a transition towards the wet season. March sees a significant increase, with 97 mm (3.8 in) over 7 days, representing the peak of the rainy season. As the year continues, precipitation gradually decreases, with April falling to 19 mm (0.7 in) on only 2 days. Notably, the dry months of July, August, and September report virtually no rain, highlighting a distinct dry spell that contrasts sharply with the preceding months. Overall, January serves as a crucial pivot point, from relatively dry conditions to the more torrential downpours of late summer.
In January, La Union, Peru experiences a notably high humidity level at 89%, setting the stage for a typically moist beginning to the year. This level is slightly elevated compared to the following months, particularly February and March, where humidity remains high at 87%. As the year progresses into April, there's a slight decrease to 86%, transitioning into the drier months ahead. May sees a resurgence of humidity, climbing back to 89% before it drops significantly in July and August, where it stabilizes at 71%. This mid-year dip highlights a distinct shift that is balanced by a gradual increase in the later months of the year, culminating in December at 86%. Overall, humidity trends in La Union showcase a pronounced seasonal shift, with the highest levels clustered around the start and end of the year.
In La Union, Peru, January brings an alarming UV Index of 14, categorized as extreme, which means even brief exposure of just 10 minutes can lead to sunburn. This intensity persists through February and March, where the UV Index peaks at 15 and 16, respectively. As the months progress into April and May, the index gradually decreases but remains dangerously high at 15 and 13. Notably, from June to August, while the index dips slightly to a minimum of 11, it still falls within the extreme exposure category. As the year winds down, the UV Index fluctuates around 14, reminding sun-seekers to stay vigilant against UV radiation throughout the year. For comprehensive details, be sure to check La Union UV Index.
UV Risk Categories
In January, La Union, Peru basks in an impressive 274 hours of sunshine, setting the stage for a bright start to the year. As the months progress, the region experiences an upward trend in sunlight, with February bringing 303 hours, and March following closely at 314 hours. The sun continues to shine brightly into April and May, peaking at 322 and 331 hours respectively. This abundance of light not only enhances the beauty of the landscape but also invites locals and visitors alike to indulge in outdoor activities. After a slight dip in June with 308 hours, the sunshine rebounds in the subsequent months, reaching 340 hours by December. Overall, La Union showcases a gradual increase in daylight, making it an appealing destination throughout the year, particularly during the sun-drenched months of late spring and early summer.
In January, La Union, Peru, offers a 32% chance of sunny weather, a figure that remains consistent into February. As the seasons transition, the likelihood of sunshine begins to increase, peaking in May with a striking 61% chance. Following May, there’s a gentle decline as the region moves into the cooler months, yet the average remains fairly buoyant, particularly in July at 58%. Notably, the chances of clear skies dip in the latter part of the year, hitting their annual low in December at just 27%. This trend illustrates how La Union's weather evolves throughout the year, with the early months providing a moderate but decreasing likelihood of sunshine before culminating in sunnier late autumn days.
In January, La Union, Peru enjoys a consistent 12 hours of daylight, setting a vibrant tone for the year. This radiant duration continues into February and March, allowing ample time for outdoor activities and exploration. However, as April arrives, daylight begins to slip, with 11 hours marking a gentle transition into the cooler months. This reduction persists through the winter months of May, June, July, and August, creating a serene rhythm of shorter days. Interestingly, as spring approaches in September, daylight nudges back up to 12 hours, restoring the balance before sliding into a stable pattern of 12 hours from October through December. This cyclical daylight pattern not only paints a picturesque view but also invites locals and visitors alike to embrace the changing seasons in this beautiful Peruvian locale.
In January, La Union, Peru experiences a gentle average wind speed of 3.3 m/s (7 mph), setting a tranquil tone for the month. This calm begins to shift slightly in February, where a subtle increase to 3.6 m/s (8 mph) heralds a brief uptick in breeziness. The winds continue to fluctuate, with March witnessing a decrease back to 2.9 m/s (6 mph), reflecting the region's variable coastal climate. As the year progresses into the warmer months, April and May see consistent growth, with speeds reaching 3.7 m/s (8 mph) and 3.9 m/s (9 mph) respectively, marking a peak of activity. Notably, from June through October, the average stays robustly steady at around 3.9 m/s to 4.2 m/s (9 mph), creating a vibrant windy season. As the year rounds out, November and December bring a slight decrease, but with wind speeds still hovering between 3.7 m/s and 3.8 m/s (8-9 mph). Overall, the January winds signal the beginning of a progressively dynamic year in La Union, showcasing a captivating interplay of calm and breezy days.
Weather in La Union varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in La Union, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February both feature warm temperatures, with January having a minimum of 18°C (65°F) and an average of 25°C (78°F), while February is slightly warmer with a minimum of 19°C (67°F) and an average of 26°C (80°F). Both months reach a maximum temperature of 33°C (92°F). However, February tends to be wetter, accumulating 43 mm (1.7 in) of precipitation over 5 days compared to January's 14 mm (0.6 in) over just 3 days. Additionally, humidity levels remain high in both months, with January at 89% and February slightly lower at 87%. For more detailed insights into February's weather in La Union, you can visit La Union weather in February.
In January, the weather is warm with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 33°C (92°F), averaging around 25°C (78°F). It experiences relatively low precipitation, totaling only 14 mm (0.6 in) over about 3 days, and the humidity is quite high at 89%. In contrast, March tends to be slightly warmer, with temperatures ranging from a minimum of 20°C (68°F) to a maximum of 34°C (94°F) and an average of 26°C (80°F). However, March sees significantly more rainfall, with precipitation accumulating to 97 mm (3.8 in) over 7 days, and the humidity remains high at 87%. For more details on March weather, you can check La Union weather in March.
January and April in La Unión present a strikingly similar climate, with both months featuring a minimum temperature of around 18°C (64-65°F), an average of 25°C (77-78°F), and a maximum reaching 33°C (92°F). While both months experience mild temperatures, January has slightly higher humidity at 89% compared to April's 86%. Precipitation is also similar, with January receiving 14 mm (0.6 in) over 3 days and April slightly more at 19 mm (0.7 in) over just 2 days. To explore more about the weather specifics in April, you can refer to the following link: La Union weather in April.
January and May in La Union present a delightful yet distinct contrast in weather. January sees slightly warmer temperatures, with a minimum of 18°C (65°F) and an average of 25°C (78°F), peaking at a comfortable 33°C (92°F). It experiences more precipitation, totaling 14 mm (0.6 in) over 3 days, while maintaining consistent humidity at 89%. In contrast, May tends to be cooler, with a minimum of 16°C (61°F) and an average of 23°C (74°F), reaching a maximum of 31°C (89°F). The month is also drier, with only 7 mm (0.3 in) of rainfall over just 1 day, and humidity remains steady at 89%. For a more detailed look at May weather, check out La Union weather in May.
In January, the weather tends to be warmer, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 33°C (92°F) and an average of 25°C (78°F). The month experiences relatively high humidity at 89% and receives about 14 mm (0.6 in) of precipitation over three days. In contrast, June is cooler with a minimum temperature of 16°C (62°F), an average of 21°C (71°F), and a maximum of 30°C (85°F). Precipitation is significantly lower in June, with only 4 mm (0.2 in) over just one day, and the humidity drops slightly to 84%. For more detailed information, visit La Union weather in June.
In January, the weather is warm and humid, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 33°C (92°F) and an average of 25°C (78°F). The month experiences light precipitation, averaging 14 mm (0.6 in) over about three days, resulting in a high humidity of 89%. In contrast, July offers a cooler climate, with temperatures peaking at a maximum of 27°C (80°F) and an average of 20°C (69°F), while the minimum temperature drops to 15°C (59°F). Notably, July has significantly less rainfall, with only 1 mm (0.0 in) and no rainy days, leading to a more comfortable humidity level of 71%. For more details on July weather, check out La Union weather in July.
When comparing the weather in January and August, we see notable differences in temperature and humidity. January experiences warmer temperatures, ranging from a minimum of 18°C (65°F) to a maximum of 33°C (92°F), with an average of 25°C (78°F) and high humidity at 89%. In contrast, August is cooler, with temperatures ranging from 15°C (58°F) to 27°C (81°F) and an average of 20°C (68°F). August also boasts significantly lower precipitation, with just 2 mm (0.1 in) over 0 days, compared to January's 14 mm (0.6 in) across 3 rainy days. For more details on August weather, you can visit La Union weather in August.
In January, the weather is significantly warmer, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 33°C (92°F), and an average temperature of 25°C (78°F). The month experiences some rainfall, with an average precipitation of 14 mm (0.6 in) over three days, accompanied by high humidity at 89%. In contrast, September brings cooler temperatures, with a minimum of 15°C (60°F) and a maximum of 28°C (83°F), averaging 20°C (68°F). Notably, September is dry, with only 2 mm (0.1 in) of precipitation and no rainy days, along with a lower humidity level of 75%. For more detailed information, you can check La Union weather in September.
In January, the weather in La Union is generally warmer with minimum temperatures around 18°C (65°F) and maximums reaching up to 33°C (92°F), accompanied by high humidity at 89%. The month sees an average temperature of 25°C (78°F) and experiences some rainfall, totaling 14 mm over approximately 3 days. In contrast, October offers a cooler climate, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 28°C (83°F). The average temperature in October is a mild 21°C (69°F), and it experiences significantly less precipitation, only 7 mm over just 1 day, along with lower humidity at 77%. For more details, you can check La Union weather in October.
In January, La Union experiences warmer weather with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 33°C (92°F), and an average temperature of 25°C (78°F). This month sees a higher humidity level at 89% and slightly more precipitation, totaling 14 mm (0.6 in) over about 3 days. In contrast, November is milder, with temperatures spanning from a minimum of 15°C (59°F) to a maximum of 30°C (86°F), and an average temperature of 21°C (71°F). The humidity is lower at 79%, and there is less rainfall, amounting to 9 mm (0.4 in) over just 2 days. For more details on the weather in November, you can visit La Union weather in November.
In January, the weather in La Union is generally warmer with average temperatures ranging from a minimum of 18°C (65°F) to a maximum of 33°C (92°F), while December sees slightly cooler averages, with temperatures ranging from 18°C (64°F) to a maximum of 31°C (88°F). Both months experience similar precipitation levels, each receiving 14 mm (0.6 in), though January typically has precipitation over 3 days compared to December’s 4 days. Humidity levels are slightly higher in January at 89%, compared to December’s 86%, indicating a marginally more humid environment in the first month of the year. For more detailed weather insights, you can check La Union weather in December.
In January, La Union reveals a warm embrace with temperatures reaching a balmy 33°C (92°F) at their peak, providing a delightful contrast to the cooler months that often precede it. With an average temperature around 25°C (78°F) and relatively mild lows, this month is characterized by a cozy warmth that invites outdoor adventures. While the region does experience a touch of rain—about 14 mm (0.6 in) across just 3 days—the humidity remains notably high at 89%, creating a tropical feel that distinguishes January from its drier, cooler counterparts. For a deeper dive into the seasonal changes and variations in weather, check out La Union Climate.