December Weather in La Union, Peru

Last updated: August 27, 2025

Experience the unique climate of La Union, Peru in December, where temperatures typically range from a maximum of 18°C (65°F) to a brisk minimum of -2°C (28°F). With an average temperature of 8°C (46°F), this month is characterized by its cool and damp conditions, creating a distinctively chilly atmosphere. December also welcomes ample precipitation, with 166 mm (6.5 in) of rain over a staggering 29 days, leading to a high humidity level of 91%. Embrace the serenity that comes with the rains and explore the lush landscapes that thrive under these conditions.

December Temperature in La Union

In December, La Union, Peru, begins to show a subtle warming trend as it transitions into the heart of summer. With minimum temperatures hovering around -2°C (28°F), residents experience slightly milder nights compared to the preceding months. The average temperature reaches 8°C (46°F), reflecting the region's characteristic cool climate, while the maximum temperature rises to a pleasant 18°C (65°F), offering a taste of warmth and inviting outdoor activities. This month signifies a gentle shift, as the cooler temperatures of winter gradually give way to the more temperate days of summer, making December an ideal time to explore the beauty of La Union.

December Weather in La Union: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in La Union, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Union, December typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec454646454544434343454646
Data source: Temperature data for La Union generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in La Union

In La Union, Peru, December marks a significant transition in precipitation patterns, concluding the rainy season with a noteworthy 166 mm (6.5 in) of rainfall over 29 days. This period reflects a steady decline from the peak precipitation of 189 mm (7.5 in) observed in March, but still showcases a robust wet climate that carries the year into its final month. Notably, December's rainfall is only slightly less than November's 137 mm (5.4 in), illustrating how the region remains vibrant with moisture at year-end. This pattern emphasizes a gradual tapering of precipitation as the dry months approach, with each month showing a clear trend toward decreasing rainfall from March through June, followed by a resurgence leading up to December's substantial totals.

December Precipitation Trends in La Union

The chart displays monthly precipitation patterns in La Union, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In La Union, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec1681781891106833293374121137166
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in La Union

As the year draws to a close, December in La Union, Peru, experiences a notable rise in humidity, peaking at 91%. This significant increase contrasts sharply with the drier months of July and August, where humidity levels plummet to a mere 44% and 34%, respectively. Throughout the year, humidity consistently hovers in the mid to upper eighties during the earlier months, peaking again in March and April at 89%. The summer months see a shift, with levels sharply declining before stabilizing in the fall. December's surge indicates a return to the steamy conditions prevalent at the start of the year, wrapping up the weather cycle with a lush and tropical embrace.

December Average Humidity in La Union

This chart illustrates the average monthly humidity levels in La Union, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in La Union is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%86%89%89%86%71%44%34%37%50%73%91%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in La Union

In December, La Union, Peru, maintains a UV Index of 17, classifying exposure as extreme with a persistent burn time of just 10 minutes. This month continues the trend seen throughout the year, where the UV Index has consistently remained at high levels, particularly from January to April when it peaked at 19. Following this, there’s a slight dip in the index, stabilizing around 15 to 17 from May to December, yet the danger remains significant. Visitors and residents alike should take necessary precautions to protect their skin, remembering that even on overcast days, UV rays can be intense. For more detailed information, visit La Union UV Index.

Maximum UV Index Levels in La Union for December

The chart shows the monthly maximum UV Index (UVI) for La Union in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in La Union typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec191919191513141517181817
Data source: La Union December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

December Sunshine in La Union

In La Union, Peru, December shines brightly with an impressive 263 hours of sunshine, making it a perfect gateway into the summer months. The trend of increasing daylight becomes evident as we move from the year's start; January kicks off with 197 hours, gradually escalating to a peak of 332 hours in August. This upward trajectory showcases the district's transformation into a sun-soaked paradise, especially delightful during the dry season from May to October. December’s strong sunlight signals a warm welcome to the new year, offering a vibrant backdrop for outdoor adventures and relaxation alike. Whether basking on the beaches or exploring the lush landscapes, December's golden hours promise unforgettable experiences under the radiant Peruvian sun.

Monthly Sunshine Duration in La Union: December Highlighted

The December sunshine duration represents the total number of hours La Union experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec197h224h246h287h326h314h331h332h318h303h255h263h
Data source: La Union December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in La Union During December

In La Union, Peru, the likelihood of sunny weather in December reveals intriguing seasonal patterns. With a 12% chance of sun in December, the month marks a slight increase compared to November's minimal 5%. This trend hints at the onset of a brighter period as the year winds down. The preceding months show a gradual rise in sunshine, peaking in July at 37% before tapering off. While December offers a modest opportunity for sunny days, it's evident that the region retains a more favorable outlook for outdoor activities as it transitions into the drier months ahead.

Percentage of Sunny Days in December in La Union

The chart illustrates the percentage of sunny days in La Union throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often La Union experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec6%8%5%12%24%22%37%30%21%13%5%12%
Data source: La Union December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in La Union in December

In La Union, Peru, the length of daylight follows a rhythmic pattern throughout the year. From January to March, residents bask in a consistent 12 hours of sunlight, creating a vibrant atmosphere perfect for outdoor activities. As the months transition into April through August, daylight gently decreases to 11 hours, ushering in cooler days as the region experiences its winter season. However, this tends to be short-lived, as September through November see a return to 12 hours of daylight, revitalizing the landscape and inviting both locals and visitors to embrace the outdoors once more. December aligns perfectly with the year's earlier months, bringing back that 12-hour daylight duration, establishing an inviting and sunny end to the year that reflects the region's tropical charm.

Average Daylight Hours in La Union for December

The chart illustrates the variation in daylight duration in La Union throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 36m12h 23m12h 7m11h 51m11h 39m11h 33m11h 36m11h 47m12h 2m12h 18m12h 32m12h 40m
Data source: La Union daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in La Union

In La Union, Peru, the December winds mirror the gentle consistency observed throughout the year, with an average speed of 1.3 m/s (3 mph). This month, like the preceding ones, features soft breezes that create a soothing atmosphere, perfect for relaxation and outdoor activities. Notably, the wind begins to pick up slightly during the winter months, reaching a peak of 1.6 m/s (4 mph) in July and August, before tapering off again in the latter part of the year. As the seasons shift, December remains a calm period, allowing visitors and locals alike to appreciate the tranquil beauty of the region without the distractions of harsh winds. This steady trend offers a delightful prelude to summer's breezier days, emphasizing La Union’s inviting charm year-round.

Average December Wind Speed in La Union

The chart displays monthly wind speed patterns in La Union, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.31.31.31.31.41.41.61.61.51.41.21.3 m/s
Data source: La Union December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in La Union Compares to Other Months

Weather in La Union varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in La Union, focusing on differences in temperature, rainfall, humidity, and UV levels.

December and January present relatively similar weather conditions, although subtle differences can be observed. In December, temperature ranges from a minimum of -2°C (28°F) to a maximum of 18°C (65°F), with an average of 8°C (46°F). This month also experiences higher precipitation, with 166 mm (6.5 in) falling over 29 days and humidity averaging 91%. Conversely, January sees a slightly cooler minimum of -3°C (27°F) and a lower maximum of 17°C (62°F), along with an average temperature of 7°C (46°F). Precipitation increases marginally to 168 mm (6.6 in), but over fewer days—25 in total—and humidity decreases slightly to 88%. For more detailed insights, you can check La Union weather in January.

In December, the weather features a temperature range from -2°C (28°F) to a maximum of 18°C (65°F), with an average of 8°C (46°F). The month experiences considerable precipitation, totaling 166 mm (6.5 in) over 29 days, accompanied by high humidity at 91%. In contrast, February sees slightly milder temperatures with a minimum of -1°C (31°F) and a maximum of 17°C (62°F), maintaining an average of 8°C (46°F). Precipitation increases slightly to 178 mm (7.0 in) over 27 days, and humidity decreases to 86%. For more detailed weather information, you can visit La Union weather in February.

In December, temperatures typically range from a minimum of -2°C (28°F) to a maximum of 18°C (65°F), with an average temperature of 8°C (46°F). The month sees significant precipitation of about 166 mm (6.5 in) over 29 days, and humidity levels are quite high at 91%. In contrast, March experiences slightly warmer weather with temperatures averaging 8°C (46°F), a low of 0°C (32°F), and a high of 16°C (61°F). Precipitation increases to 189 mm (7.5 in) over 30 days, while humidity remains relatively high at 89%. This comparison illustrates that although both months have similar average temperatures, March tends to be wetter and a bit milder. For more details on March weather, you can check La Union weather in March.

In December, the weather is characterized by a wider range of temperatures, with a minimum of -2°C (28°F) and a maximum of 18°C (65°F), averaging around 8°C (46°F). The month is quite wet, receiving 166 mm (6.5 in) of precipitation over 29 days, contributing to a high humidity level of 91%. In contrast, April experiences slightly milder conditions, with temperatures varying from -2°C (28°F) to a maximum of 17°C (63°F), averaging about 7°C (45°F). Precipitation decreases to 110 mm (4.3 in) across 26 days, resulting in a slightly lower humidity of 89%. For more details about the weather in April, you can visit La Union weather in April.

In December, the weather is characterized by a wider temperature range, with minimums dipping to -2°C (28°F) and maximums reaching up to 18°C (65°F). The month sees significant precipitation, totaling 166 mm (6.5 in) over 29 days, creating a humid atmosphere with 91% humidity. In contrast, May exhibits slightly cooler temperatures, ranging from a minimum of -2°C (29°F) to a maximum of 16°C (61°F), and experiences much less rainfall of 68 mm (2.7 in) over 20 days, resulting in a lower humidity level of 86%. This makes May generally drier and slightly milder compared to the wetter, more humid December. For more details, you can check La Union weather in May.

In comparing the weather of December and June, December is characterized by relatively mild temperatures with a minimum of -2°C (28°F) and an average of 8°C (46°F), while June experiences slightly cooler conditions, with a minimum of -5°C (24°F) and an average of 6°C (44°F). Precipitation levels starkly contrast between the two months; December sees a significant 166 mm (6.5 in) of rain over 29 days, creating a damp environment, whereas June boasts only 33 mm (1.3 in) of rain spread across just 10 days, resulting in a much drier atmosphere. Additionally, December has higher humidity at 91%, compared to June's 71%, contributing to the overall perception of greater chilliness and dampness during the winter month. For a look at specific conditions during June, check out La Union weather in June.

In December, the weather is typically milder and wetter, with temperatures ranging from a minimum of -2°C (28°F) to a maximum of 18°C (65°F) and an average of 8°C (46°F). This month sees significant rainfall, accumulating to 166 mm (6.5 in) over 29 days, contributing to a high humidity level of 91%. In contrast, July experiences cooler temperatures with a minimum of -5°C (24°F) and a maximum of 16°C (62°F), averaging around 6°C (43°F). The precipitation is drastically lower at 29 mm (1.2 in) over just 9 days, resulting in a much drier atmosphere with a humidity level of only 44%. For more detailed insights, check out La Union weather in July.

In December, the weather in La Union is characterized by milder temperatures, with daily averages around 8°C (46°F) and maximums reaching 18°C (65°F). In contrast, August experiences cooler conditions, with an average temperature of 6°C (43°F) and highs peaking at 17°C (62°F). December sees significantly more precipitation, totaling 166 mm (6.5 in) over 29 days, while August is much drier, receiving only 32 mm (1.3 in) in about 10 days. Additionally, humidity levels in December soar to 91%, compared to a much more comfortable 34% in August. For more detailed information, you can check La Union weather in August.

In December, the weather exhibits a moderate climate with average temperatures ranging from a minimum of -2°C (28°F) to a maximum of 18°C (65°F). The month is characterized by higher precipitation levels of 166 mm (6.5 in) spread over 29 days, accompanied by a humidity level of 91%. In contrast, September experiences slightly cooler temperatures, with minimums of -3°C (26°F), averaging 6°C (44°F), and maximums reaching 16°C (61°F). The rainfall is considerably less, at 74 mm (2.9 in) over 21 days, coupled with a much lower humidity level of 37%. For more detailed information, you can check La Union weather in September.

In December, the weather is slightly milder, with average temperatures ranging from a minimum of -2°C (28°F) to a maximum of 18°C (65°F), compared to October, where temperatures vary from -2°C (29°F) to 17°C (63°F). Precipitation is noticeably higher in December, totaling 166 mm (6.5 in) over 29 days, whereas October sees 121 mm (4.8 in) over 28 days. Additionally, December has a significantly higher humidity level at 91%, compared to October's 50%. For a more detailed look at the weather in October, you can visit La Union weather in October.

In comparing the weather of December and November, we see notable similarities and differences. Both months exhibit similar average temperatures, hovering around 8°C (46°F), but December tends to be slightly warmer with a maximum of 18°C (65°F) compared to November's maximum of 16°C (62°F). Precipitation is higher in December, totaling 166 mm (6.5 in) over 29 days, while November records 137 mm (5.4 in) across 28 days. The humidity also increases significantly in December, reaching 91%, compared to November's more moderate 73%. For more detailed information on November weather, you can visit La Union weather in November.

Compare La Union's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in La Union

December in La Union brings a distinct shift in weather patterns, characterized by chilly temperatures and high humidity that sets the stage for a rainy season. With the frequent precipitation spanning nearly the whole month, residents and visitors alike experience a unique contrast to the drier months preceding it. Despite the lower maximum temperatures, the lush landscapes and vibrant nature that emerge during this time create a picturesque backdrop. Embrace the cool, damp charm of La Union this December; for more insights, check out La Union Climate.