December Weather in Belem, Brazil

Last updated: August 21, 2025

In December, Belem, Brazil, experiences a tropical climate characterized by warm temperatures and high humidity. With maximum temperatures reaching 34°C (94°F) and an average of 27°C (81°F), the month is typically warm, with minimums around 23°C (74°F). Rainfall is substantial, totaling 170 mm (6.7 in) over the course of 23 days, creating a lush, vibrant environment. Humidity levels linger at a notable 82%, adding to the tropical feel of the city during this wet season.

December Temperature in Belem

In December, Belem, Brazil, welcomes the heat with temperatures that range from a comfortable minimum of 23°C (74°F) to a sizzling maximum of 34°C (94°F). This month sees a slight dip in the average temperature, settling at 27°C (81°F), which is still warm enough for sun-soaked adventures. Notably, December often marks the transition into the wet season, hinting at increased humidity and the possibility of refreshing rain showers. As the year winds down, the tropical climate of Belem ensures that visitors experience balmy evenings and vibrant days, making it a perfect destination for those seeking warmth and a taste of Brazil’s lively atmosphere.

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

The chart illustrates December temperature patterns in Belem, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Belem, 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).
JanFebMarAprMayJunJulAugSepOctNovDec807979808181818282828281
Data source: Temperature data for Belem 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 Belem

In December, Belém, Brazil, experiences a notable shift in weather as it transitions into the wet season, characterized by 170 mm (6.7 in) of rainfall over 23 days. While this month sees a decrease in precipitation compared to the peak of earlier months like March and February, which recorded significant amounts of 471 mm (18.6 in) and 439 mm (17.3 in) respectively, December's rainfall is still considerable. This consistent precipitation through much of the month indicates that the region remains lush and vibrant, maintaining its characteristic tropical climate. As the year wraps up, the trend reveals a steady pattern of rainfall, paving the way for the upcoming intensity of the wet season in the new year.

December Precipitation Trends in Belem

The chart displays monthly precipitation patterns in Belem, 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 Belem, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec2324404714162881147644393997170
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Belem

December in Belém, Brazil, sees a notable shift in humidity levels, settling at 82%, which is a slight increase from the preceding month. This trend highlights the city's tendency to experience higher humidity as the year draws to a close, following a dip to its lowest point of 69% in both September and October. The rising humidity in December, along with the nearly consistent high levels throughout the wet season, underscores Belém's tropical climate. Such conditions create a lush environment, albeit with a noticeable stickiness, making it essential for residents and visitors alike to adapt to the dynamic weather as they step into the new year.

December Average Humidity in Belem

This chart illustrates the average monthly humidity levels in Belem, 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 Belem is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%81%81%85%89%86%81%72%69%69%71%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Belem

In December, Belem, Brazil, experiences a UV Index of 13, categorized as extreme, with a burn time of just 10 minutes. This reflects a continuation of the region's high UV exposure throughout the year, which has been consistently intense since the start of the year. From January through April, the UV Index peaks at 16 in March before gradually tapering to 11 in June and July; however, the levels remain decidedly extreme. As the year wraps up, residents and visitors alike should remain vigilant about sun protection, as the UV Index stays elevated into December. For more detailed information on Belem's UV Index trends, visit Belem UV Index.

Maximum UV Index Levels in Belem for December

The chart shows the monthly maximum UV Index (UVI) for Belem 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 Belem typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141416151311111213131313
Data source: Belem 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 Belem

December in Belém, Brazil, greets the year’s end with a remarkable 295 hours of sunshine, providing a vibrant close to the rainy season. This month continues a trend of steadily increasing sunlight that begins in mid-autumn, peaking in the sun-soaked heights of July and August, which flaunt 343 and 346 hours respectively. As the year progresses, sunshine hours generally increase before tapering off slightly in November and December, suggesting a welcoming atmosphere perfect for outdoor festivities and enjoying the stunning natural beauty of the region. While December may not have the highest count, its plentiful sunshine offers a warm embrace of summer's return, promising bright days and a lively holiday spirit.

Monthly Sunshine Duration in Belem: December Highlighted

The December sunshine duration represents the total number of hours Belem 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.
JanFebMarAprMayJunJulAugSepOctNovDec223h210h235h233h282h311h343h346h333h344h313h295h
Data source: Belem December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Belem During December

In Belém, Brazil, the likelihood of enjoying sunny weather in December is relatively low, sitting at just 15%. This trend reflects a noticeable dip compared to the sunnier months that precede it. For instance, as the year progresses towards mid-year, the chances of sunshine peak significantly with June and July boasting a robust 50% and 48%, respectively. Following a gradual rise in sunny days during the mid-year, the numbers begin to decline again, culminating in December's meager chance for sunlight. Thus, while many regions may bask in the warmth of the sun during this festive month, Belem tends to embrace a gloomier outlook.

Percentage of Sunny Days in December in Belem

The chart illustrates the percentage of sunny days in Belem 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 Belem experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec19%19%11%17%30%51%48%54%53%45%39%15%
Data source: Belem December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Belem in December

In Belém, Brazil, the daylight duration remains a consistent 12 hours throughout the entire year, providing a remarkable stability that is quite rare in many regions. From January to December, the sun graces the city with equal time for daylight and darkness, allowing residents and visitors alike to enjoy vibrant activities under the sun every month. This steady pattern creates a unique rhythm in the local lifestyle, where long, sunlit days can be seamlessly integrated into both daily routines and festive celebrations. Whether it's the lush landscapes or the vibrant culture, the reliable daylight hours enhance the allure of Belém, making each day a new opportunity to explore its beauty.

Average Daylight Hours in Belem for December

The chart illustrates the variation in daylight duration in Belem throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 10m12h 8m12h 5m12h 3m12h 2m12h 1m12h 2m12h 3m12h 5m12h 7m12h 10m12h 11m
Data source: Belem daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Belem

As December settles in Belem, Brazil, the winds pick up slightly, maintaining an average speed of 2.5 m/s (6 mph). This month reflects a continuation of a gentle upward trend in wind speed observed since October, when breezes were measured at 2.7 m/s (6 mph). Notably, the calmest months tend to be found in the earlier part of the year, with January and May recording the lowest speeds of 2.4 m/s (5 mph) and 2.0 m/s (4 mph), respectively. However, as we transition towards the end of the year, the consistency of winds around the 2.5 m/s mark brings a refreshing energy to the tropical landscape, creating an inviting atmosphere for both locals and visitors alike. This persistent breeziness in December is not just a seasonal phenomenon but is also emblematic of Belem's dynamic climate, where nature's subtle shifts enchant throughout the year.

Average December Wind Speed in Belem

The chart displays monthly wind speed patterns in Belem, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.52.12.12.02.12.12.52.62.72.52.5 m/s
Data source: Belem December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Belem Compares to Other Months

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

In comparing December and January, we see that both months experience relatively warm temperatures, with December having an average of 27°C (81°F) and January slightly cooler at 26°C (80°F). December's maximum temperature peaks at 34°C (94°F), while January's maximum is a bit lower at 32°C (90°F). Precipitation increases in January, totaling 232 mm (9.1 in) over 25 days, compared to 170 mm (6.7 in) across 23 days in December. Additionally, January experiences higher humidity levels at 89% compared to December's 82%. For more detailed weather insights, you can visit Belem weather in January.

In December, the weather features relatively warm temperatures with a minimum of 23°C (74°F), an average of 27°C (81°F), and a maximum of 34°C (94°F). The month also sees significant rainfall, totaling about 170 mm (6.7 in) across approximately 23 days, coupled with high humidity at 82%.

In contrast, February is slightly cooler with an average temperature of 26°C (80°F) and a maximum of 32°C (90°F). However, it experiences a notable increase in precipitation, with a total of 439 mm (17.3 in) spread over 27 days, while humidity remains comparable at 81%. The increased rainfall and slightly lower temperatures make February a distinct month in comparison to December. For a more detailed look at the conditions, check out Belem weather in February.

In comparing the weather of December and March, both months exhibit warm temperatures, with December slightly warmer on average. December's temperatures range from a minimum of 23°C (74°F) to a maximum of 34°C (94°F), while March sees a slightly cooler average, peaking at 32°C (90°F). However, March experiences significantly higher precipitation, with 471 mm (18.6 in) over 30 days compared to December's 170 mm (6.7 in) over 23 days. Humidity remains relatively stable between the two months, averaging at 82% in December and 81% in March. For more detailed information, visit Belem weather in March.

In December, the weather typically features a warm average temperature of 27°C (81°F), with daily highs reaching up to 34°C (94°F) and lows around 23°C (74°F). However, this month also sees significant rainfall, with 170 mm (6.7 in) of precipitation spread over 23 days and a humidity level of 82%.

In contrast, April experiences slightly cooler temperatures with an average of 26°C (80°F), while still reaching minimums of 23°C (74°F) and maximums of 32°C (91°F). Notably, April has a much higher total precipitation of 416 mm (16.4 in) over 30 days, contributing to a marginally higher humidity of 85%. For more detailed information, you can check Belem weather in April.

December and May share similar average temperatures, both showcasing a minimum of 23°C (74°F) and an average of 27°C (81°F). However, December experiences slightly higher maximum temperatures, reaching 34°C (94°F), compared to May's peak of 33°C (91°F). In terms of precipitation, May is notably wetter, with 288 mm (11.3 in) falling over 27 days, while December has 170 mm (6.7 in) across 23 days—indicating a higher frequency of rain during May. Additionally, humidity levels are slightly elevated in May at 89%, compared to December's 82%. For more detailed insights into the weather patterns, check out Belem weather in May.

December and June exhibit similar temperature ranges, with both months having a minimum of 23°C (74°F) and an average temperature of around 27°C (81°F). However, December tends to be slightly warmer, peaking at 34°C (94°F) compared to June's maximum of 33°C (91°F). Precipitation levels show a marked difference; December experiences higher rainfall, totaling 170 mm (6.7 in) over 23 days, while June has 114 mm (4.5 in) spread across 20 days. Humidity is also higher in June at 86%, compared to 82% in December, making the air feel a bit more oppressive during the early winter month. For more detailed insights about the weather in June, check out Belem weather in June.

In December, the weather is typically warmer and wetter compared to July. December temperatures range from a minimum of 23°C (74°F) to a maximum of 34°C (94°F), with an average of 27°C (81°F). This month also sees significant rainfall, with about 170 mm (6.7 in) of precipitation over 23 days, leading to a humidity level of 82%.

In contrast, July experiences slightly cooler temperatures, with a minimum of 23°C (73°F) and a maximum of 33°C (92°F), along with an average of 27°C (82°F). Precipitation is considerably lower in July at 76 mm (3.0 in) over 15 days, maintaining a humidity level of 81%. For more details on July's weather, you can visit Belem weather in July.

Overall, December's weather is marked by higher temperatures and more frequent rain, while July is drier and marginally cooler.

The weather in December is characterized by slightly higher humidity at 82% and more frequent rainfall, with an average precipitation of 170 mm over 23 days, creating a more tropical atmosphere. In contrast, August features a somewhat drier climate with only 44 mm of rain spread across 10 days and lower humidity at 72%. Despite both months sharing similar temperature ranges, with minimums around 23°C (74°F) and maximums peaking at 34°C (94°F), August tends to feel a touch more pleasant due to the reduced humidity and precipitation. For more details on Augusto's climate, you can visit Belem weather in August.

In December, the weather tends to be warm and humid, with temperatures ranging from a minimum of 23°C (74°F) to a maximum of 34°C (94°F) and an average of 27°C (81°F). However, it also sees significant precipitation, with 170 mm (6.7 in) of rain over 23 days and humidity levels reaching 82%. In contrast, September offers slightly cooler temperatures, with an average of 28°C (82°F) and similar temperature extremes of 23°C (74°F) to 34°C (94°F). Precipitation in September is considerably lower, accumulating only 39 mm (1.6 in) over 10 days, and the humidity is also more moderate at 69%. For a detailed overview of September weather, check out Belem weather in September.

When comparing the weather in December and October, it's clear that December experiences a slightly cooler minimum temperature of 23°C (74°F) compared to October's 24°C (75°F). Both months see similar maximum temperatures, with December reaching up to 34°C (94°F) while October peaks at 34°C (93°F). However, December tends to be much wetter, with a significant increase in precipitation at 170 mm (6.7 in) falling over 23 days, compared to October's 39 mm (1.5 in) over just 11 days. Additionally, humidity is higher in December at 82%, compared to October's 69%. For more detailed information on October weather, you can check Belem weather in October.

In comparing the weather between November and December, December tends to be slightly warmer on average, with daytime temperatures ranging from a minimum of 23°C (74°F) to a maximum of 34°C (94°F). In contrast, November features a minimum temperature of 24°C (75°F) and an average temperature of 28°C (83°F). Additionally, December experiences significantly more rainfall, totaling 170 mm (6.7 in) over 23 days, compared to November's 97 mm (3.8 in) spread across just 13 days. The humidity is also higher in December at 82%, while November sits comfortably at 71%. For more details, you can check Belem weather in November.

Compare Belem's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Belem

December in Belém is characterized by warm temperatures and a high level of humidity, creating a tropical ambiance that is distinct from the cooler months earlier in the year. While the city enjoys an average temperature of 27°C, the month also brings frequent rainfall, with precipitation occurring on about 23 days, leading to a total of 170 mm of rain. This combination of warmth and moisture not only enhances the lush greenery of the region but also sets the tone for a vibrant and lively atmosphere. For a deeper understanding of Belém’s ongoing weather patterns, explore Belem Climate.