December Weather in Iquitos, Peru

Last updated: August 27, 2025

December in Iquitos, Peru is characterized by warm and humid conditions, with maximum temperatures reaching up to 34°C (93°F) and an average of 26°C (79°F). The month sees a significant amount of rainfall, accumulating to 292 mm (11.5 in) over 27 days, making it one of the wetter periods in the region. With humidity levels soaring to 87%, December truly encapsulates the tropics, creating a lush and vibrant atmosphere. Travelers should prepare for frequent showers, embracing the rich biodiversity that thrives in this rain-soaked paradise.

December Temperature in Iquitos

In December, Iquitos, Peru, embraces its tropical climate with consistently warm temperatures. The month sees a minimum of around 22°C (73°F), perfect for those wanting to escape the chill of winter in other parts of the world. The average temperature remains steady at 26°C (79°F), while daytime highs can reach up to 34°C (93°F), closely mirroring the patterns observed in the preceding months. As the year winds down, December signals a slight rise in both the minimum and maximum temperatures, a continuation of the warmth that characterizes the Amazon basin. This month marks not only a culmination of the year but also a festive kickoff in the region, inviting visitors to experience Iquitos under pleasantly sunny skies.

December Weather in Iquitos: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Iquitos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iquitos, 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).
JanFebMarAprMayJunJulAugSepOctNovDec797979797878777980807979
Data source: Temperature data for Iquitos 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 Iquitos

In Iquitos, Peru, December marks a significant culmination of the wet season, with precipitation reaching 292 mm (11.5 in) over 27 rainy days. This month stands out as one of the wetter times of the year, showcasing a notable increase compared to the drier months of July (155 mm) and August (122 mm). The trend throughout the year sees rainfall peaking in March (335 mm) and gradually tapering off during the subsequent months until December, which still retains a robust amount of rain. As the year wraps up, Iquitos experiences lush greenery and vibrant ecosystems, driven by this abundance of precipitation, making December a vivid reflection of the Amazon's environmental richness.

December Precipitation Trends in Iquitos

The chart displays monthly precipitation patterns in Iquitos, 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 Iquitos, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec255216335309230222155122176213244292
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Iquitos

In Iquitos, Peru, December marks a peak in humidity levels, soaring to 87%, which is a significant rise from the preceding months. This trend of increasing humidity begins in the latter part of the year, with November already at 76%, as the region transitions from the drier months of July and August—when humidity dipped to the lowest at 68%. The wet season reasserts itself, leading to higher humidity readings that persist into the new year. Overall, December's humidity encapsulates the lush, vibrant atmosphere of the rainforest, making it a time of rich natural beauty and intense tropical experiences.

December Average Humidity in Iquitos

This chart illustrates the average monthly humidity levels in Iquitos, 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 Iquitos is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%79%82%86%91%85%77%68%60%62%76%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Iquitos

In December, Iquitos, Peru, continues to experience an extreme UV Index of 13, with a consistent burn time of just 10 minutes. This pattern follows a year marked by high UV levels, particularly prominent from January to April, where the UV Index reaches a peak of 16. As the months progress toward mid-year, a slight decline to the lower teens is observed, but the extreme category remains. The annual trend underscores the necessity for sun protection year-round in this tropical region. For more details on the UV Index in Iquitos, check out Iquitos UV Index.

Maximum UV Index Levels in Iquitos for December

The chart shows the monthly maximum UV Index (UVI) for Iquitos 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 Iquitos typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616161412111213141313
Data source: Iquitos 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 Iquitos

In Iquitos, Peru, December bask in a delightful 255 hours of sunshine, marking a notable glow as the year wraps up. This month shines brightly after a gradual decline from the sun-drenched summer, highlighting a substantial increase compared to November's 230 hours. The trend of increasing sunshine hours peaks in the mid-year, with July and August basking in nearly 300 hours, but December still holds its own, comfortably above the year's average. As the festive season approaches, the lingering warmth of the sun in December serves as a perfect backdrop for celebrating the vibrant culture and natural beauty of the Amazon.

Monthly Sunshine Duration in Iquitos: December Highlighted

The December sunshine duration represents the total number of hours Iquitos 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.
JanFebMarAprMayJunJulAugSepOctNovDec222h229h234h232h248h263h296h299h286h269h230h255h
Data source: Iquitos December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Iquitos During December

In Iquitos, Peru, December heralds the onset of the rainy season, with only 10% likelihood of sunny weather. This is a slight dip from November's 14%, following a trend of decreasing sunshine through the months as the year winds down. Interestingly, Iquitos enjoys its sunniest spells from July to August, when the chances of sun climb to 36% and 38%, respectively. As the year progresses from May's more promising 21%, the shift towards December's gloom exemplifies the region's characteristic wet climate. So, while December might not be ideal for sun-seekers, the lush landscapes and vibrant ecosystems that flourish during this time offer their own unique beauty.

Percentage of Sunny Days in December in Iquitos

The chart illustrates the percentage of sunny days in Iquitos 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 Iquitos experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec13%8%9%13%21%21%36%38%34%21%14%10%
Data source: Iquitos December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Iquitos in December

In Iquitos, Peru, the daylight duration remains remarkably consistent throughout the year, with 12 hours of daylight in both January and December, as well as in several other months — including February, March, April, September, October, and November. This steady pattern underscores the region's proximity to the equator, where day and night lengths remain relatively unchanged. However, from May to August, the daylight dips to 11 hours, creating a subtle yet evident shift as the year progresses. This fluctuation highlights the tropical climate's unique rhythm, offering residents and visitors alike a vibrant experience of Amazonian life under the sun.

Average Daylight Hours in Iquitos for December

The chart illustrates the variation in daylight duration in Iquitos throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 18m12h 12m12h 6m12h11h 55m11h 53m11h 54m11h 58m12h 4m12h 10m12h 16m12h 19m
Data source: Iquitos daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Iquitos

As December settles over Iquitos, Peru, the winds remain gentle and consistent, matching the year’s average of 1.3 m/s (3 mph). This stability is a hallmark of Iquitos’ climate, where the wind speeds tend to fluctuate minimally throughout the months. From January through November, the winds rarely veer from this pleasant pace, briefly dipping to 1.2 m/s in some months but rebounding in both the late fall and early winter. December's breezy embrace not only signifies the transition into the warmer summer months but also maintains an inviting atmosphere for both residents and visitors, marking a time when the lush Amazonian surroundings come alive under a gentle caress of the winds.

Average December Wind Speed in Iquitos

The chart displays monthly wind speed patterns in Iquitos, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.31.31.31.21.21.21.21.31.21.31.31.3 m/s
Data source: Iquitos December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Iquitos Compares to Other Months

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

When comparing December and January weather in Iquitos, both months experience similar average temperatures, hovering around 26°C (79°F), with maximum temperatures reaching up to 34°C (93°F) in December and 34°C (94°F) in January. However, December tends to be wetter, receiving 292 mm (11.5 in) of precipitation over 27 days, compared to January's 255 mm (10.0 in) over 23 days. The humidity levels are also slightly lower in January at 83%, compared to December's 87%. For more detailed information, you can check Iquitos weather in January.

In December, Iquitos experiences a vibrant climate characterized by higher humidity levels at 87% and a significant amount of precipitation, totaling 292 mm over 27 days. Temperatures range from a minimum of 22°C (73°F) to a maximum of 34°C (93°F), with an average of 26°C (79°F). In contrast, February offers slightly lower humidity at 79% and reduced rainfall, with 216 mm of precipitation over 24 days. The temperature remains quite similar, with a minimum of 22°C (72°F) and a maximum of 33°C (92°F), averaging around 26°C (80°F). For more details on February's weather, you can check Iquitos weather in February.

In December, temperatures in Iquitos typically range from a minimum of 22°C (73°F) to a maximum of 34°C (93°F), with an average of around 26°C (79°F). The month experiences significant rainfall, with a total of 292 mm (11.5 in) spread over 27 days, and high humidity levels at 87%.

In contrast, March sees slightly warmer weather, with maximum temperatures rising to 35°C (96°F) while maintaining the same minimum and average temperatures as December. Precipitation increases to 335 mm (13.2 in) over 28 days, though humidity drops slightly to 82%. For a more detailed look at what to expect, you can check out Iquitos weather in March.

In December, the weather in Iquitos is characterized by warm temperatures, with a minimum of 22°C (73°F) and an average of 26°C (79°F), reaching a maximum of 34°C (93°F). However, this month also sees significant rainfall, with 292 mm (11.5 in) of precipitation over 27 days, and high humidity levels at 87%.

In contrast, April experiences slightly cooler conditions, with minimum temperatures dropping to 21°C (71°F), while the average remains consistent at 26°C (79°F). The maximum temperature also rises slightly to 35°C (95°F). April is just a touch wetter, with 309 mm (12.2 in) of rain across 26 days, and a slightly lower humidity level of 86%.

For a detailed look at April's weather, you can check out Iquitos weather in April. Overall, while both months are warm and humid, April tends to be a bit wetter and slightly hotter than December.

In December, temperatures in Iquitos range from a minimum of 22°C (73°F) to a maximum of 34°C (93°F), with an average of 26°C (79°F). The month experiences significant rainfall, totaling 292 mm (11.5 in) over 27 days, coupled with high humidity at 87%. In contrast, May has slightly cooler temperatures, with a minimum of 20°C (69°F) and a maximum of 33°C (92°F), while still maintaining an average of 26°C (79°F). Rainfall in May is less intense, totaling 230 mm (9.0 in) across 25 days, and the humidity is slightly higher at 91%. For more details on the weather in May, you can visit Iquitos weather in May. Overall, while both months are warm and humid, December tends to be wetter than May.

December and June in Iquitos present two distinct yet relatively similar weather patterns. Both months feature warm temperatures, with December recording a minimum of 22°C (73°F), an average of 26°C (79°F), and a maximum of 34°C (93°F), while June's temperatures are slightly cooler with a minimum of 21°C (69°F), an average of 26°C (78°F), and a maximum of 33°C (92°F). Rainfall also differs, as December sees heavier precipitation at 292 mm (11.5 inches) over 27 days, compared to June's 222 mm (8.8 inches) over 24 days. Humidity remains high in both months, at 87% in December and 85% in June, contributing to the tropical climate. For more detailed information on June weather specifically, you can refer to this link: Iquitos weather in June.

December and July present contrasting weather patterns in Iquitos. In December, temperatures range from a minimum of 22°C (73°F) to a maximum of 34°C (93°F), with an average of 26°C (79°F). This month also experiences significant precipitation, totaling 292 mm (11.5 in) over 27 days, accompanied by high humidity levels at 87%. In contrast, July boasts slightly cooler temperatures, with a minimum of 17°C (64°F) and a maximum of 33°C (92°F), averaging 25°C (78°F). The precipitation is also lower, with 155 mm (6.1 in) spread over 19 days and a humidity level of 76%. For a detailed look at July's weather specifics, check out Iquitos weather in July.

When comparing the weather in December and August, there are notable differences in temperature, precipitation, and humidity. December tends to be warmer, with minimum temperatures of 22°C (73°F) and maximums reaching up to 34°C (93°F), while August has cooler minimums at 17°C (63°F) but can also peak at 34°C (94°F). Precipitation levels are significantly higher in December, with 292 mm (11.5 in) spread over 27 days, compared to August's 122 mm (4.8 in) over 17 days. Additionally, December's humidity at 87% creates a much more muggy atmosphere in contrast to the relatively comfortable 68% humidity in August. For a closer look at August weather specifics, you can check out Iquitos weather in August.

When comparing the weather in December and September, both months exhibit similar average temperatures, with December ranging from a minimum of 22°C (73°F) to a maximum of 34°C (93°F), and September marking a minimum of 20°C (69°F) to a maximum of 34°C (94°F). However, December is considerably wetter, receiving 292 mm (11.5 in) of precipitation over 27 days, compared to September's 176 mm (6.9 in) across 23 days. Additionally, December's humidity is notably higher at 87%, making it feel more tropical than September, which has a humidity level of 60%. For a more detailed look at September's weather patterns, visit Iquitos weather in September.

When comparing the weather in December to that of October, notable differences emerge. Both months feature a minimum temperature of around 22°C (73°F), with December averaging slightly lower at 26°C (79°F), while October’s average is 26°C (80°F). October tends to be warmer during the day, reaching a maximum of 35°C (95°F) compared to December's peak of 34°C (93°F). Precipitation levels also diverge, with December experiencing significantly more rainfall at 292 mm (11.5 in) over 27 days, compared to October's 213 mm (8.4 in) over 24 days. Additionally, December is marked by higher humidity at 87%, in contrast to October's more comfortable 62%. For those interested in exploring more about the weather in October, you can find additional details here: Iquitos weather in October.

In comparing the weather of December and November, both months exhibit similar temperature ranges, with December seeing a minimum of 22°C (73°F), an average of 26°C (79°F), and a maximum of 34°C (93°F). However, December stands out for its significantly higher precipitation, totaling 292 mm (11.5 in) over 27 days, compared to November's 244 mm (9.6 in) across 25 days. Additionally, December experiences greater humidity at 87%, compared to November's 76%. To learn more about the weather specific to November, you can visit this link: Iquitos weather in November.

Compare Iquitos's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Iquitos

As December arrives in Iquitos, the weather transforms into a blend of warmth and moisture, setting it apart from other months. With high humidity averaging around 87%, the atmosphere feels particularly tropical. Daily temperatures hover around a comfortable 26°C (79°F), but can peak at a sweltering 34°C (93°F). This month also witnesses substantial rainfall, with approximately 292 mm precipitating across 27 days, making it one of the wettest times of the year. These conditions create a lush, vibrant landscape, inviting both adventure and exploration. For more in-depth insights into the ever-changing weather patterns of this unique rainforest city, visit Iquitos Climate.