December Weather in La Merced, Peru

Last updated: August 27, 2025

In La Merced, Peru, December brings a refreshing climate characterized by a maximum temperature reaching up to 19°C (67°F) and a comfortable average of 11°C (52°F), dipping to a chilly minimum of 5°C (42°F). This month experiences substantial rainfall, with 183 mm (7.2 in) recorded over 28 days, contributing to the region's lush greenery. The high humidity levels, averaging around 89%, create a vibrant atmosphere, making December a unique and invigorating time to experience the natural beauty of La Merced.

December Temperature in La Merced

In December, La Merced experiences a gentle transition into the summer season, characterized by mild temperatures that make it an inviting destination. The minimum temperature hovers around 5°C (42°F), while the average temperature rises to 11°C (52°F), peaking comfortably at a maximum of 19°C (67°F). This signifies a slight increase from the previous months, where cooler temperatures dominated, especially from June to July. As December unfolds, the atmosphere shifts, encouraging outdoor activities and exploration amidst the lush Andean landscape, providing visitors with perfect conditions to enjoy the natural beauty and vibrant culture of the region.

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

The chart illustrates December temperature patterns in La Merced, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Merced, 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).
JanFebMarAprMayJunJulAugSepOctNovDec505150504948474749505251
Data source: Temperature data for La Merced 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 Merced

December in La Merced, Peru, typically sees a significant increase in precipitation, with an average of 183 mm (7.2 in) of rainfall over 28 days. This culminates a year characterized by fluctuating rainfall patterns, where the wettest months, February and March, peak with 224 mm and 190 mm respectively. As the rainy season intensifies towards the year's end, December often reflects the transition back to heavier rainfall after a slight dip during the preceding months. The data suggests a pattern of increased precipitation leading into the final month of the year, highlighting La Merced's dynamic weather and vibrant ecosystems that thrive on this generous moisture.

December Precipitation Trends in La Merced

The chart displays monthly precipitation patterns in La Merced, 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 Merced, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec1832241901178756495683116151183
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in La Merced

As the year winds down, December in La Merced, Peru, brings a noticeable increase in humidity, clocking in at 89%. This marks a slight rise from the previous month’s 81%, showcasing a trend of gradually fluctuating humidity levels throughout the year. The pattern reflects the region's shift from the drier months of August and July, where humidity dipped to 44% and 54% respectively, back into the more humid months of late spring and early summer. The consistent high levels witnessed in the first half of the year, particularly in January and February with 93% and 92%, respectively, make the latter part of the year feel more tropical as it transitions towards the rainy season.

December Average Humidity in La Merced

This chart illustrates the average monthly humidity levels in La Merced, 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 Merced is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%92%90%85%70%55%44%52%65%81%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in La Merced

As December rolls into La Merced, Peru, residents and visitors can expect a UV Index of 18, categorizing it as extreme with a rapid burn time of just 10 minutes. This trend of high UV levels is consistent throughout the year, with only slight fluctuations; January, February, and March peak with indices of 19, while earlier months average around 14 to 17. Even as the year winds down, the strong UV presence reminds us to stay vigilant in our sun protection efforts. With this information, it's crucial to remain aware of the sun's intensity. For a more detailed look at UV levels and safety tips, check out La Merced UV Index.

Maximum UV Index Levels in La Merced for December

The chart shows the monthly maximum UV Index (UVI) for La Merced 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 Merced typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec181919171412131416181818
Data source: La Merced 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 Merced

In La Merced, Peru, December typically ushers in a moderate yet inviting amount of sunshine, with 255 hours of bright days to enjoy. As we reflect on the year, it’s clear that this lush region experiences a gradual arc of increasing sunlight, peaking in the height of August with 326 hours. Following this zenith, the hours of sunshine begin to taper, leading into December's glow. Despite the slight decrease, the warmth and brightness of the sun still provide a vibrant backdrop to the festive season, reminding us that each month contributes its unique charm to La Merced's stunning floral landscapes and invigorating climate. As sunny days turn to balmy evenings, December maintains a comforting balance, completing the year on a pleasantly radiant note.

Monthly Sunshine Duration in La Merced: December Highlighted

The December sunshine duration represents the total number of hours La Merced 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.
JanFebMarAprMayJunJulAugSepOctNovDec209h229h260h279h314h296h318h326h311h306h256h255h
Data source: La Merced December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in La Merced During December

In La Merced, Peru, the likelihood of sunny weather in December sits at a modest 8%, reflecting a trend of fluctuating sunshine throughout the year. This percentage is an increase from the preceding months, notably November, when the chances of sun drop to a mere 4%. As the year progresses, we see a gradual rise in sunny days from the early months, with conditions improving significantly by mid-year; for instance, July boasts a more promising 39% chance. However, as December approaches, the weather remains relatively overcast despite the uptick from November. Travelers should keep this in mind when planning their visits, as sunshine in this lush region remains a precious commodity during the holiday season.

Percentage of Sunny Days in December in La Merced

The chart illustrates the percentage of sunny days in La Merced 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 Merced experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec7%6%5%15%28%21%39%33%28%18%4%8%
Data source: La Merced December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in La Merced in December

In La Merced, Peru, the daylight duration exhibits a captivating rhythm throughout the year. From January to March, the city enjoys a consistent 12 hours of daylight, basking in the splendor of sunlight. As the year progresses into April, daylight slightly diminishes to 11 hours, a trend that continues through the middle of the year until August. However, this seasonal ebb reverses in September, when daylight extends again to 12 hours, echoing the brightness of earlier months. With October and November maintaining this generous allowance of light, December concludes the year on a high note, once again offering 12 hours of radiant sunshine. This cyclical pattern highlights La Merced’s unique position near the equator, fostering a balance between light and shadow throughout the seasons.

Average Daylight Hours in La Merced for December

The chart illustrates the variation in daylight duration in La Merced throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 45m12h 29m12h 8m11h 47m11h 30m11h 22m11h 26m11h 41m12h 1m12h 22m12h 41m12h 51m
Data source: La Merced daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in La Merced

In La Merced, Peru, December brings a gentle breeze with an average wind speed of 1.1 m/s (2 mph), a soothing whisper in the landscape. Throughout the year, the wind remains consistently mild, with speeds barely fluctuating from 1.0 to 1.2 m/s. This calmness characterizes the region, particularly from April through November, where the wind tends to hover at the lower end of the scale. As the year winds down, December continues this trend, offering a serene atmosphere that's perfect for exploring the lush surroundings. The subtle increase in wind speed compared to the previous months hints at a shift in the seasonal air currents, ensuring visitors can enjoy both tranquility and a refreshing breath of fresh air.

Average December Wind Speed in La Merced

The chart displays monthly wind speed patterns in La Merced, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.21.11.11.01.01.01.01.11.11.11.01.1 m/s
Data source: La Merced December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in La Merced Compares to Other Months

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

In comparing the weather between December and January, it's evident that temperatures remain relatively stable, with December experiencing a minimum of 5°C (42°F) and a maximum of 19°C (67°F), while January sees slightly cooler temperatures with a minimum of 4°C (40°F) and a maximum of 18°C (65°F). Both months have similar average temperatures, with December at 11°C (52°F) and January at 10°C (51°F). Precipitation levels also show minor differences, with December receiving 183 mm (7.2 in) across 28 days and January slightly lower at 182 mm (7.2 in) over 25 days. Additionally, January tends to be a bit more humid, with 93% compared to December's 89%. For more details, you can refer to La Merced weather in January.

In December, the weather tends to be slightly warmer, with average temperatures ranging from 5°C (42°F) to a maximum of 19°C (67°F), while February experiences a slightly cooler average of 5°C (41°F) to a maximum of 18°C (65°F). However, February sees a higher total precipitation of 224 mm (8.8 in) compared to December's 183 mm (7.2 in), with rainfall spread over 27 days compared to December's 28 days. Humidity also increases in February, peaking at 92% versus December's 89%. For a detailed look at February's specific weather patterns, you can visit La Merced weather in February.

In comparing the weather between December and March, the temperatures remain relatively stable, with December having slightly warmer averages. December experiences a minimum of 5°C (42°F) and an average of 11°C (52°F), while March shows a similar minimum but a slightly lower average of 10°C (51°F). The maximum temperatures are also marginally warmer in December at 19°C (67°F) compared to March's 17°C (63°F).

Precipitation levels are comparable, with December receiving 183 mm (7.2 inches) over 28 days and March slightly higher at 190 mm (7.5 inches) over 30 days. Humidity levels increase from December at 89% to March's 92%, reflecting the transition towards the wetter season. For more detailed insights into the weather characteristics of March, you can check La Merced weather in March.

December and April exhibit similar temperature ranges, with December experiencing slightly higher averages. In December, the minimum temperature is about 5°C (42°F), peaking at around 19°C (67°F), while April sees a minimum of 4°C (39°F) and a maximum of 18°C (65°F). Precipitation is significantly higher in December, totaling 183 mm (7.2 in) over 28 days compared to April's 117 mm (4.6 in) across 26 days. Both months have high humidity levels, with December at 89% and April slightly higher at 90%. To explore more about the weather specifics in April, visit La Merced weather in April.

In December, the weather is generally milder, with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 19°C (67°F), while May sees slightly cooler conditions with temperatures dipping to a minimum of 2°C (36°F) and peaking at 18°C (64°F). December experiences significantly more precipitation, averaging 183 mm (7.2 in) over 28 days, compared to May's 87 mm (3.4 in) over 21 days, making December a wetter month overall. Humidity levels are fairly similar, with December at 89% and May slightly lower at 85%. For a more detailed look at the weather conditions in May, you can check La Merced weather in May.

When comparing the weather in December and June, it's evident that December is generally milder and wetter. In December, temperatures range from a minimum of 5°C (42°F) to a maximum of 19°C (67°F), with an average of 11°C (52°F). The month also sees significant precipitation, totaling 183 mm (7.2 in) over 28 days, contributing to a high humidity of 89%. In contrast, June experiences cooler temperatures, with a minimum of 1°C (34°F) and a maximum of 16°C (61°F), averaging 9°C (48°F). Precipitation is much lower in June, at 55 mm (2.2 in) over 13 days, and humidity drops to 70%. For more details on June weather, you can visit La Merced weather in June.

In December, the weather is considerably milder compared to July, with average temperatures ranging from a minimum of 5°C (42°F) to a maximum of 19°C (67°F), while July sees lower averages with a minimum of 0°C (32°F) and a maximum of 17°C (63°F). December is also characterized by significantly higher precipitation, receiving 183 mm (7.2 in) over 28 days, compared to July's 49 mm (1.9 in) over just 10 days. Additionally, humidity levels are notably higher in December at 89%, unlike the more comfortable 54% observed in July. For more detailed information on July weather, you can visit La Merced weather in July.

December and August present contrasting weather conditions. In December, temperatures range from a minimum of 5°C (42°F) to a maximum of 19°C (67°F), with an average of 11°C (52°F). This month also experiences significant rainfall, with 183 mm (7.2 in) over 28 days and high humidity at 89%. In contrast, August is cooler, featuring temperatures that range from 0°C (32°F) to a maximum of 17°C (63°F), averaging 8°C (47°F). The month sees much less precipitation, totaling 56 mm (2.2 in) over just 15 days, and a lower humidity level of 44%. For detailed information, you can refer to La Merced weather in August.

In comparing the weather in December and September, December is notably warmer with average temperatures ranging from a minimum of 5°C (42°F) to a maximum of 19°C (67°F), while September sees slightly cooler temperatures with a minimum of 3°C (37°F) and a maximum of 17°C (63°F). Additionally, December experiences significantly higher precipitation levels at 183 mm (7.2 in) over 28 days compared to September's 83 mm (3.3 in) over just 20 days. The humidity in December is also much higher at 89%, creating a more damp atmosphere compared to September's 52%. For more detailed information, you can check La Merced weather in September.

In comparing the weather conditions of December and October, December tends to be slightly warmer overall, with average temperatures ranging from a minimum of 5°C (42°F) to a maximum of 19°C (67°F), compared to October's range of 3°C (38°F) to 20°C (67°F). However, December is characterized by significantly higher precipitation, totaling 183 mm (7.2 in) over 28 days, compared to October's 116 mm (4.6 in) over 26 days. Additionally, December experiences much higher humidity at 89%, while October has a more comfortable 65%. These differences highlight December's wetter and more humid climate, making it feel cooler than the temperatures suggest. For those interested in exploring the specifics, you can check La Merced weather in October.

In December, the weather remains similar to November, with average temperatures comfortably hovering around 11°C (52°F) and a maximum of 19°C (67°F). However, December experiences slightly higher minimum temperatures at 5°C (42°F) compared to November's 4°C (39°F). Precipitation increases in December, reaching 183 mm (7.2 in) over the same number of days, signaling a wetter month with increased humidity at 89%, contrasting with November's 81%. For more insights, check out La Merced weather in November.

Compare La Merced's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in La Merced

In December, La Merced experiences a distinct shift in weather as it transitions into the rainy season, making it far wetter compared to other months. With high humidity levels around 89% and nearly continuous rain over 28 days, the atmosphere feels significantly more vibrant and lush. While temperatures remain mild, peaking at about 19°C, the consistent precipitation contributes to a refreshing, albeit damp, environment. This stark contrast from the drier months showcases La Merced’s unique climate dynamics, inviting visitors to experience the region's lush greenery. For more insights on the weather patterns throughout the year, visit La Merced Climate.