December Weather in Tarija, Bolivia

Last updated: August 21, 2025

In Tarija, Bolivia, the weather in December offers a blend of mild temperatures and significant rain, making it a unique time to explore the region. With maximum temperatures reaching 28°C (82°F) and an average of 15°C (60°F), visitors can expect pleasant, warm days interspersed with cooler evenings. However, daily life is punctuated by rain, as the area experiences 238 mm (9.4 in) of precipitation over 25 days, resulting in an 87% humidity level. This atmospheric richness not only nourishes the lush landscapes but also contributes to the vibrant local culture, inviting travelers to enjoy both the warmth and the refreshing embrace of the December showers.

December Temperature in Tarija

In December, Tarija, Bolivia, welcomes visitors with a refreshing embrace of mild temperatures, showcasing a minimum of 7°C (45°F) and a comfortable average of 15°C (60°F). As the year nears its end, daytime highs reach up to 28°C (82°F), providing the perfect backdrop for outdoor adventures and celebrations. This month marks a noticeable warming trend compared to the cooler winter months preceding it, where temperatures dipped as low as -7°C (19°F) in July. With these pleasant weather conditions, December serves as a delightful transition from the chilly season into a warmer summer, inviting exploration of Tarija's stunning landscapes and vibrant culture.

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

The chart illustrates December temperature patterns in Tarija, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tarija, 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).
JanFebMarAprMayJunJulAugSepOctNovDec605958565350495156595960
Data source: Temperature data for Tarija 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 Tarija

In December, Tarija experiences a significant surge in precipitation, with an impressive 238 mm (9.4 in) of rainfall over 25 days. This marks the peak of the wet season, as the city transitions from the milder rains of November, which recorded 126 mm (5.0 in) across 20 days. The increase in both the volume of rainfall and the number of rainy days highlights December's role as a crucial month for replenishing water supplies and supporting the region's agriculture. Compared to the drier months preceding it, such as April and May, which see markedly lower totals of just 74 mm (2.9 in) and 27 mm (1.1 in), respectively, December stands out as a critical time for Tarija. This trend underscores the importance of the rainy season for the local ecosystem and the livelihoods that depend on it.

December Precipitation Trends in Tarija

The chart displays monthly precipitation patterns in Tarija, 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 Tarija, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec17520717674271014124267126239
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Tarija

In Tarija, Bolivia, December marks a notable uptick in humidity, soaring back to 87% after dipping to a seasonal low of 33% in August. This trend reflects the region's distinctive seasonal rhythm, where the dry winter months yield to the moisture-laden summer. Following November's humidity of 78%, December's increase signals the return of the rainy season, bringing refreshing moisture that enhances the lush landscape. As the year closes, residents and visitors alike can feel the air's weight, emphasizing the vibrant transformation as the environment prepares for the upcoming rains.

December Average Humidity in Tarija

This chart illustrates the average monthly humidity levels in Tarija, 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 Tarija is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%81%78%82%82%69%49%33%42%49%78%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Tarija

In December, Tarija, Bolivia, experiences its peak UV Index at 18, categorized as extreme, which means outdoor enthusiasts should exercise caution as sunburn can occur in just 10 minutes. This month marks a continuation of the trend seen throughout the year, where the UV Index remains consistently high, especially from January to March with indices reaching 17. As we transition into the summer months, the UV exposure amplifies, peaking in December before gradually decreasing in the subsequent months. Visitors and residents alike should remain vigilant and prioritize sun protection during this intense period. For more detailed information, check out the Tarija UV Index.

Maximum UV Index Levels in Tarija for December

The chart shows the monthly maximum UV Index (UVI) for Tarija 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 Tarija typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1717161310891114161718
Data source: Tarija 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 Tarija

In December, Tarija, Bolivia, boasts an impressive 321 hours of sunshine, part of a trend that reflects the region's consistently bright climate. As the year draws to a close, daylight hours begin to taper off slightly from the peak seen in October with its remarkable 339 hours. However, despite this minor decline, December maintains an abundance of sunshine, promising warm days and clear skies that invite both locals and visitors to revel in outdoor activities. Over the months, a notable increase in sunshine can be observed from the year’s beginning, with hours gradually climbing as the southern hemisphere reaches its summer peak. This delightful array of sunlight, especially in December, makes Tarija an ideal destination for those seeking to bask in the warm embrace of the Bolivian sun.

Monthly Sunshine Duration in Tarija: December Highlighted

The December sunshine duration represents the total number of hours Tarija 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.
JanFebMarAprMayJunJulAugSepOctNovDec274h283h302h301h318h303h319h330h322h339h327h321h
Data source: Tarija December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Tarija During December

December in Tarija, Bolivia, marks a notable dip in sunny weather, with only a 17% chance of sunlight gracing the landscape. This trend follows a general pattern of decreasing likelihood as the year progresses, particularly after a promising peak in the winter months of July and August, where the chances of sun soar to 69% and 71%, respectively. As autumn transitions into summer, the probabilities fluctuate, highlighting the 42% chance in May and the 19% in November. By December, residents and visitors alike can expect more overcast skies, reminding us that, while the heat of summer approaches, the sun may not always make its appearance.

Percentage of Sunny Days in December in Tarija

The chart illustrates the percentage of sunny days in Tarija 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 Tarija experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%16%21%23%42%51%69%72%48%43%19%17%
Data source: Tarija December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Tarija in December

In Tarija, Bolivia, December marks a continuation of the long daylight trend, with 13 hours of sunlight that starts in January and returns in November. This well-lit month caps off a gradual decline in daylight duration from the summer peaks, with the hours dropping to 10 in the heart of winter during June and July. As the seasons shift, daylight gradually increases once again, creating a rhythmic cycle of light. Notably, December's hours mirror those of January, inviting locals and visitors alike to enjoy the vibrant outdoors while basking in the warmth of the sun. With this consistent daylight, Tarija thrives in its unique seasonal charm, enriching the experience of its inhabitants during the festive month.

Average Daylight Hours in Tarija for December

The chart illustrates the variation in daylight duration in Tarija throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 15m12h 47m12h 10m11h 33m11h 3m10h 49m10h 57m11h 23m11h 58m12h 35m13h 8m13h 24m
Data source: Tarija daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Tarija

In December, Tarija experiences a gentle breeze with an average wind speed of 1.7 m/s (4 mph), mirroring the calm of earlier months like January and April. This annual transition showcases a distinct pattern, where the wind picks up in the heart of the year, reaching its peak in October before tapering off slightly. From May through November, speeds climb steadily, peaking at 2.2 m/s (5 mph), creating a refreshing atmosphere as the region prepares for the warmer months ahead. In December, the return to a lower wind velocity signals the onset of a tranquil season, inviting locals and visitors alike to enjoy the serene beauty of Tarija's landscape.

Average December Wind Speed in Tarija

The chart displays monthly wind speed patterns in Tarija, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.71.71.81.71.92.12.02.12.12.22.11.7 m/s
Data source: Tarija December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Tarija Compares to Other Months

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

In December, the weather features a temperature range from a minimum of 7°C (45°F) to a maximum of 28°C (82°F), with an average temperature of 15°C (60°F). This month experiences significant rainfall, with a total of 238 mm (9.4 in) spread over 25 days, contributing to high humidity levels of 87%.

In contrast, January sees a slight increase in average temperature, moving up to 16°C (61°F), while the maximum temperature decreases slightly to 27°C (80°F). Precipitation also decreases to 174 mm (6.9 in) over 20 days, yet humidity remains consistent at 87%. For a more detailed look at the weather specifics, you can visit Tarija weather in January.

In December, the weather in Tarija features mild temperatures, with a minimum of 7°C (45°F) and an average high of 28°C (82°F). The month experiences substantial rainfall, accumulating around 238 mm (9.4 in) over 25 days, leading to high humidity levels of 87%. In contrast, February sees slightly warmer temperatures, with a minimum of 8°C (46°F) and a similar maximum of 28°C (83°F), but the overall precipitation is reduced to 207 mm (8.1 in) over 23 days, resulting in a lower humidity of 81%. For more detailed information on February weather trends, you can visit Tarija weather in February.

In December, the weather is relatively warm with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 28°C (82°F), averaging around 15°C (60°F). However, it experiences significant rainfall, with precipitation totaling 238 mm (9.4 in) over 25 days and a high humidity of 87%. In contrast, March presents slightly cooler conditions, with minimum temperatures of 6°C (42°F) and maximums reaching 29°C (84°F), while still maintaining an average of 15°C (59°F). Precipitation decreases to 176 mm (6.9 in) across 23 days, and humidity is lower at 78%. For more detailed information about the weather during this month, check out Tarija weather in March.

When comparing the weather in December and April, notable differences can be observed. December enjoys a higher average temperature of 15°C (60°F), with daytime highs reaching up to 28°C (82°F). However, it also experiences significant rainfall, with 238 mm (9.4 in) spread over approximately 25 days, resulting in a high humidity level of 87%. In contrast, April sees a slightly cooler average temperature of 14°C (57°F) and similar high temperatures of up to 28°C (82°F). However, it benefits from much less precipitation, with only 74 mm (2.9 in) over about 15 days, leading to a lower humidity of 82%. For more detailed information, you can visit Tarija weather in April.

December and May exhibit distinct weather patterns in their respective climates. December features warmer temperatures with a minimum of 7°C (45°F) and an average of 15°C (60°F), reaching a maximum of 28°C (82°F). However, it also brings substantial rainfall, with 238 mm (9.4 in) over 25 days, contributing to a high humidity level of 87%. In contrast, May has cooler temperatures, with a minimum of -2°C (28°F) and an average of 11°C (53°F), while peaking at 26°C (80°F). Precipitation is significantly lower, at 27 mm (1.1 in) over just 9 days, and humidity is slightly lower at 82%. For more specific insights, you can check Tarija weather in May.

In December, the weather in Tarija is significantly warmer and more humid compared to June. With average temperatures ranging from a minimum of 7°C (45°F) to a maximum of 28°C (82°F), December experiences an average of 15°C (60°F) and a high humidity level of 87%. It's also notable for its increased rainfall, totaling 238 mm (9.4 in) over approximately 25 days, making it one of the wetter months.

In contrast, June brings cooler temperatures, with a minimum of -7°C (20°F) and an average temperature of 10°C (51°F). Even though the maximum temperature can reach 28°C (83°F), the lower overall temperatures are accompanied by much less precipitation, only 10 mm (0.4 in) spread over about 3 days, and a humidity level of 69%. For more detailed weather information, you can explore Tarija weather in June.

December and July exhibit stark contrasts in weather patterns. In December, temperatures range from a minimum of 7°C (45°F) to a maximum of 28°C (82°F), with an average of 15°C (60°F). This month is characterized by high humidity levels at 87% and significant rainfall, receiving 238 mm (9.4 in) over 25 days. In contrast, July experiences much cooler temperatures, with a minimum of -7°C (19°F) and a maximum of 26°C (80°F), averaging around 10°C (50°F). The precipitation is minimal, totaling only 14 mm (0.6 in) across just 3 days, and the humidity is significantly lower at 49%. For those interested in more details, you can visit Tarija weather in July.

December and August present vastly different weather conditions. In December, temperatures range from a mild minimum of 7°C (45°F) to a warm maximum of 28°C (82°F), with an average of 15°C (60°F). The month is characterized by high humidity at 87% and significant rainfall, accumulating 238 mm (9.4 in) over 25 days. In contrast, August is much cooler, featuring temperatures that drop to a minimum of -6°C (21°F) and only reach a maximum of 27°C (81°F) with an average of 11°C (51°F). This month is notably drier, with just 12 mm (0.5 in) of precipitation over 4 days and a much lower humidity level of 33%. For more details, check Tarija weather in August.

December weather is characterized by a milder temperature range with minimums around 7°C (45°F) and maximums reaching up to 28°C (82°F), making it generally more comfortable, albeit with higher humidity at 87%. In contrast, September experiences lower temperatures, with minimums dropping to -2°C (29°F) and average highs of 30°C (86°F), but it is significantly drier, receiving only 42 mm (1.7 in) of precipitation over just 9 days. This stark difference in humidity and rainfall highlights the contrasting seasons, as seen in the transition from the dry warmth of September to the wet heat of December. For more detailed insights, explore Tarija weather in September.

When comparing the weather in December and October, there are notable differences in temperature, precipitation, and humidity levels. December boasts warmer temperatures, with a minimum of 7°C (45°F) and a maximum of 28°C (82°F), while October offers cooler conditions, starting at a minimum of 0°C (33°F) and reaching up to 30°C (86°F). In terms of precipitation, December is significantly wetter, receiving 238 mm (9.4 in) over 25 days compared to October's 67 mm (2.6 in) over just 16 days. Additionally, December's humidity is much higher at 87%, while October maintains a more moderate level of 49%. For a closer look at October's climate specifics, visit Tarija weather in October.

In comparing the weather between November and December, we see that December generally experiences slightly warmer temperatures, with an average of 15°C (60°F) and a maximum of up to 28°C (82°F), compared to November's similar average of 15°C (60°F) but a slightly lower maximum of 27°C (82°F). However, December is notably wetter, receiving 238 mm (9.4 in) of precipitation over 25 days, whereas November has only 126 mm (5.0 in) across 20 days. Additionally, December has a higher humidity level at 87%, compared to November's 78%. For a detailed exploration of November's weather, you can refer to Tarija weather in November.

Compare Tarija's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Tarija

As December rolls in, Tarija experiences a unique blend of weather characteristics that set it apart from other months. With a maximum temperature that reaches 28°C (82°F), the city enjoys warm afternoons, while the average temperature cools down to a comfortable 15°C (60°F) at night. However, December’s distinctive feature is its high humidity of 87% and frequent rain, with 25 days of precipitation totaling 238 mm (9.4 in), making it one of the wettest months of the year. This contrast between warm days and humid, rainy spells creates a lush landscape, offering a vibrant backdrop for holiday festivities and wildlife enthusiasts alike. For a deeper look into the annual patterns, check out Tarija Climate.