December Weather in La Union, Peru

Last updated: August 27, 2025

December in La Unión, Peru, presents a delightful mix of warm temperatures and refreshing humidity, making it an intriguing month to explore the region. With a maximum temperature reaching 31°C (88°F) and a comfortable average of 23°C (74°F), visitors can enjoy the pleasant climate outdoors. The minimum temperature dips to 18°C (64°F), offering cooler evenings perfect for relaxation. December also witnesses light precipitation, with a total of 14 mm (0.6 in) across four rainy days, contributing to the lush landscape. The humidity level hovers around 86%, enhancing the tropical feel of this picturesque location. Embrace the vibrant atmosphere and natural beauty that December brings to La Unión!

December Temperature in La Union

In December, La Union, Peru, experiences a pleasant transition into the summer season, with temperatures reflecting a consistent warmth throughout the month. The minimum temperature hovers around 18°C (64°F), while the average rises to a comfortable 23°C (74°F). Daytime highs can reach up to 31°C (88°F), offering a mix of warmth and sunshine perfect for outdoor adventures. This pattern of increasing temperatures, particularly from November's cooler averages, marks a clear trend towards a more tropical climate as the year comes to a close, making December a delightful time for both locals and visitors alike.

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).
JanFebMarAprMayJunJulAugSepOctNovDec777980777371686868697074
Data source: Temperature data for La Union generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in La Union

December in La Union, Peru, experiences a refreshing change as the year wraps up, bringing 14 mm (0.6 in) of precipitation over 4 days. This monthly total mirrors the light rainfall observed in January, indicating a steady return to wetter conditions after the dry spell from mid-year, where months like July and August saw virtually no rain at all. With December's precipitation being significantly higher than the driest summer months, it hints at a gradual transition into the wet season as the region braces for the heavier rains of January and February. This pattern not only revitalizes the landscape but also plays a crucial role in replenishing local water supplies.

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.
JanFebMarAprMayJunJulAugSepOctNovDec14439719741227915
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in La Union

December in La Union, Peru, brings a humidity level of 86%, marking a slight increase as compared to the months leading up to it. This uptick follows a trend where humidity remains relatively high from January through May, peaking at 89% in both January and May. As the year progresses into the dry months of July and August, humidity dramatically drops to 71%, offering a stark contrast to the wetter beginning of the year. However, as the wet season returns, December once again sees an increase, reflecting the region's characteristic climatic rhythm that ebbs and flows throughout the year.

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.
JanFebMarAprMayJunJulAugSepOctNovDec89%87%87%86%89%84%71%71%75%77%79%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in La Union

In La Union, Peru, December marks the tail end of a year characterized by remarkably high UV Index levels. With a UV Index of 13, categorized as extreme, sun exposure remains a significant concern, requiring careful precautions like limited sun exposure to just 10 minutes. The trend observed throughout the year shows a consistent UV Index range from 11 to 16, indicating a persistently high risk of skin damage from sun exposure. Notably, the peak was recorded in March at 16, with other months holding steady in the extreme category. As the seasonal patterns unfold, residents and visitors alike should remain vigilant to protect against the harsh rays. For more details on UV levels throughout the year, 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.
JanFebMarAprMayJunJulAugSepOctNovDec141516151311111214141413
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

December in La Union, Peru, shines with an impressive 340 hours of sunshine, marking it as the sunniest month of the year. This remarkable increase follows a steady ascent in daylight hours from the previous months, with sunlight gradually accumulating from 274 hours in January to a peak in December. As the year progresses, the trend reveals a consistent rise, reaching its climax in the festive season. From April's 322 hours to November’s 317 hours, sunshine remains abundant, but it's December that truly bathes the region in warmth and light, inviting visitors to embrace the joyful spirit of summer. Such a vibrant climax of sunlight not only enhances outdoor activities but also sets the perfect backdrop for unforgettable experiences in this picturesque coastal paradise.

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.
JanFebMarAprMayJunJulAugSepOctNovDec274h303h314h322h331h308h318h324h315h331h317h340h
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, December typically sees a 27% chance of sunny weather, marking it as one of the cloudier months of the year. This trend illustrates a notable decline in sunshine compared to the preceding months, where the likelihood of clear days peaks in May at 61% and remains more favorable through the winter. Following this sunny peak, the chances drop steadily into late autumn, with November at 30% and December trailing behind. As the sun's visibility wanes, visitors should be prepared for the possibility of overcast skies, making it an ideal time for cozy indoor activities or exploring the cultural richness of the area rather than sunbathing by the beach.

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.
JanFebMarAprMayJunJulAugSepOctNovDec32%32%29%41%61%43%58%44%49%33%30%27%
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 23m12h 15m12h 6m11h 57m11h 50m11h 47m11h 49m11h 55m12h 3m12h 13m12h 21m12h 25m
Data source: La Union daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in La Union

As December arrives in La Union, Peru, the wind speeds begin to settle into a comfortable rhythm, averaging 3.7 m/s (about 8 mph). This slight dip from the peak average of 4.2 m/s in September reflects a gradual transition toward calmer conditions as the year draws to a close. Throughout the months leading up to December, wind speeds have shown an upward trend, rising significantly from the low of 2.9 m/s in March, ultimately peaking in September. The latter part of the year maintains a consistent breeziness, making December feel invigorating yet inviting, mirroring the warm landscape that characterizes this coastal region. This balance of gentle wind and warm air sets the stage for a captivating end to the year's climatic narrative in La Union.

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.
JanFebMarAprMayJunJulAugSepOctNovDec3.33.62.93.73.93.93.84.14.24.13.83.7 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.

In December, the weather sees a minimum temperature of 18°C (64°F) and an average of 23°C (74°F), with a maximum reaching 31°C (88°F). The month experiences mild precipitation of 14 mm (0.6 in) over 4 days, accompanied by a relatively high humidity level of 86%. In contrast, January warms up slightly, boasting a minimum temperature of 18°C (65°F) and an average of 25°C (78°F), with a peak temperature of 33°C (92°F). This month maintains the same precipitation of 14 mm (0.6 in) but with only 3 rainy days, while humidity increases to 89%. For more detailed information, check out La Union weather in January.

In comparing the weather between December and February, December features a milder climate with a minimum temperature of 18°C (64°F) and an average of 23°C (74°F), peaking at 31°C (88°F). The month receives only 14 mm (0.6 in) of precipitation over about 4 days, with humidity at a steady 86%. In contrast, February experiences slightly warmer conditions, with temperatures ranging from a minimum of 19°C (67°F) to an average of 26°C (80°F), and a maximum of 33°C (92°F). This month sees a significant increase in total rainfall, with 43 mm (1.7 in) over 5 days and a marginally higher humidity at 87%. For a detailed look at February weather in La Union, visit La Union weather in February.

In December, the weather typically features a minimum temperature of 18°C (64°F) and an average of 23°C (74°F), with maximums reaching 31°C (88°F). It experiences relatively low precipitation, with only 14 mm (0.6 in) over about 4 days, while humidity hovers around 86%. In contrast, March tends to be warmer, with minimums of 20°C (68°F), an average of 26°C (80°F), and maximum temperatures climbing to 34°C (94°F). However, it also sees increased rainfall, accumulating 97 mm (3.8 in) across approximately 7 days, with humidity slightly rising to 87%. For a deeper look into March's climate, visit La Union weather in March.

In December, temperatures range from a minimum of 18°C (64°F) to a maximum of 31°C (88°F), with an average temperature of 23°C (74°F). The month experiences about 14 mm (0.6 in) of precipitation over four days, while humidity remains high at 86%. In contrast, April sees slightly warmer weather, with temperatures ranging from a minimum of 18°C (64°F) to a maximum of 33°C (92°F) and an average of 25°C (77°F). Precipitation increases slightly to 19 mm (0.7 in) but occurs over just two days, maintaining the same high humidity level of 86%. For more detailed information, you can visit La Union weather in April.

In December, the weather is characterized by a warm average temperature of 23°C (74°F), with max temperatures reaching up to 31°C (88°F). The humidity is relatively high at 86%, and the region experiences about 14 mm (0.6 in) of precipitation over four days. In contrast, May offers a similar average temperature of 23°C (74°F), with slightly cooler minimum temperatures at 16°C (61°F) and a maximum of 31°C (89°F). The humidity is a touch higher at 89%, but the month sees significantly less precipitation, with only 7 mm (0.3 in) falling over just one day. For more detailed insights into the weather during this period, check out La Union weather in May.

When comparing the weather between December and June, December tends to be warmer overall, with average temperatures reaching up to 23°C (74°F) and a maximum of 31°C (88°F). It also experiences slightly higher humidity at 86%, leading to a more tropical feel. In contrast, June sees a cooler average temperature of 21°C (71°F), with a maximum of 30°C (85°F), and lower humidity at 84%. Additionally, June has significantly less precipitation, recording only 4 mm (0.2 in) over just one day, compared to December's 14 mm (0.6 in) over four days. For more details, you can explore La Union weather in June.

In December, the weather is typically warmer and more humid compared to July, with average temperatures ranging from a minimum of 18°C (64°F) to a maximum of 31°C (88°F). December also experiences higher humidity at 86% and sees about 14 mm of precipitation over four days. In contrast, July is cooler, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 27°C (80°F), and it is much drier, with only 1 mm of precipitation and no rain days. For those interested in the specific weather conditions during that month, more information can be found at La Union weather in July.

In December, the weather is generally warmer and more humid compared to August. With average temperatures reaching 23°C (74°F) and maximums peaking at 31°C (88°F), December experiences a higher minimum temperature of 18°C (64°F) compared to 15°C (58°F) in August. Additionally, December has more precipitation, with an average of 14 mm (0.6 in) over four days, while August enjoys a dry spell with only 2 mm (0.1 in) of rain over no recorded rainy days. The humidity in December is noticeably higher at 86%, compared to August's 71%, contributing to a more tropical feel. For a detailed overview of August’s weather patterns, you can refer to La Union weather in August.

December and September showcase contrasting weather patterns. In December, temperatures range from a minimum of 18°C (64°F) to a maximum of 31°C (88°F), with an average of 23°C (74°F). The month experiences higher humidity at 86% and some precipitation, totaling 14 mm (0.6 in) over four days. In contrast, September is cooler, with temperatures ranging from 15°C (60°F) to 28°C (83°F), averaging 20°C (68°F). It boasts dry conditions, recording just 2 mm (0.1 in) of rainfall and no rainy days, alongside a lower humidity level of 75%. For a more detailed look at the weather in September, you can visit La Union weather in September.

In comparing the weather between December and October, December tends to be warmer with temperatures ranging from a minimum of 18°C (64°F) to a maximum of 31°C (88°F), whereas October has slightly cooler temperatures, with a minimum of 16°C (61°F) and a maximum of 28°C (83°F). Additionally, December experiences higher humidity at 86%, compared to October's 77%. Precipitation is also more frequent in December, occurring over four days with a total of 14 mm (0.6 in), while October sees only one day of rain, accumulating just 7 mm (0.3 in). For more specific weather information for October, you can visit La Union weather in October.

In comparing the weather between November and December, December tends to be slightly warmer, with average temperatures ranging from a minimum of 18°C (64°F) to a maximum of 31°C (88°F), compared to November's range of 15°C (59°F) to 30°C (86°F). Additionally, December experiences a bit more precipitation, recording 14 mm (0.6 in) over four days, whereas November sees only 9 mm (0.4 in) across two days. The humidity also rises in December to 86%, compared to November's 79%. For more details, you can check out La Union weather in November.

Compare La Union's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in La Union

As December unfolds in La Union, the weather marks a delightful transition, with temperatures rising to a maximum of 31°C (88°F) while maintaining an average of 23°C (74°F). Compared to the cooler months, December offers warmth alongside relatively low precipitation—only about 14 mm (0.6 in) over 4 days—making it an inviting time for outdoor activities. With humidity hovering at 86%, the air feels pleasantly tropical, setting a festive ambiance as the holiday season approaches. For a deeper understanding of how December fits into the yearly climate patterns, check out La Union Climate.