Last updated: April 17, 2025
Tarija, Bolivia, exhibits a diverse climate characterized by the Köppen-Geiger classifications Cwa and Cwb, indicating a temperate climate with distinct wet and dry seasons. The region experiences a wide temperature range, with January averages reaching a warm 19°C (66°F), while July sees minimum temperatures plummeting to a brisk -7°C (19°F). October marks the peak of heat, with maximum temperatures soaring to 44°C (111°F), illustrating the region's climatic extremes. This variability contributes to Tarija's unique ecological landscape and agricultural potential, influencing both local livelihoods and biodiversity.
In Tarija, Bolivia, temperature patterns reveal distinct seasonal shifts that characterize the region's climate throughout the year. The warmest months are typically January and February, where average temperatures hover around 22-23°C (71-74°F), while maximums can reach 42°C (108°F) and 40°C (104°F), respectively. As the year progresses into March and April, temperatures gradually decline, with averages falling to 19°C (67°F) in April, and a sharp dip into cooler conditions occurs in May, where temperatures can drop to a minimum of -2°C (28°F). The coldest months, June and July, experience significant lows, plunging to -7°C (19°F), but also showcase maximum temperatures that remain relatively high at around 38°C (100°F). Following this brief respite, temperatures begin to rise again in August and through the final months of the year, culminating in November and December with averages returning to 22°C (72-73°F) and maximums near 41-44°C (105-111°F), illustrating a vibrant oscillation between warmth and chill throughout the seasons.
Yacuiba experiences a wide temperature range, with a minimum of -3°C (26°F) in June and a scorching maximum of 40°C (105°F) in October, as detailed in the monthly temperatures in Yacuiba. Villamontes is even hotter, with temperatures dropping to 0°C (32°F) in July and peaking at 44°C (111°F) in October, as shown in the monthly temperatures in Villamontes. In contrast, Tarija has a slightly cooler climate, reporting a minimum of -7°C (19°F) in July and a maximum of 30°C (86°F) in September, according to the monthly temperatures in Tarija.
Tarija experiences a pronounced seasonal pattern in precipitation, with the majority of rainfall occurring during the wet season from December to March. February marks the peak, receiving 213 mm (8.4 in) of rain over 18 days, closely followed by January and March, with 180 mm (7.1 in) and 210 mm (8.3 in), respectively. This period is characterized by frequent rain showers that support the region's lush vegetation and agriculture. Conversely, the dry months of May to August see a stark reduction in precipitation, with May recording only 33 mm (1.3 in) and August a mere 7 mm (0.3 in), highlighting the significant contrast between the wet and dry seasons.
As the year progresses into the latter months, precipitation begins to increase again, notably in November and December, which receive 124 mm (4.9 in) and 236 mm (9.3 in), respectively. December not only sees the highest rainfall but also engages nearly 19 days of precipitation, long enough for the effects to be felt across the landscape. The overall annual pattern in Tarija underscores the importance of these seasonal rains, both for replenishing water sources and sustaining the local agricultural economy, where timing of rainfall is crucial for crop yields.
In Tarija, Bolivia, humidity levels display a distinct seasonal pattern, peaking during the warmer months and reaching their zenith in the heart of summer. January starts off with a high humidity of 86%, gradually decreasing to 79% in February and 78% in March. As the region transitions into the cooler months, humidity levels fluctuate slightly, peaking again in April at 83%, before dipping to 72% in June. The truly dry spell arrives in August, where humidity plummets to a mere 37%, making it the driest month of the year. However, as spring approaches, the humidity begins to climb once more, with notable increases in November at 79% and December returning to 87%. This cyclical rhythm provides a unique climate experience that blends the warmth of summer with the crispness of fall, ensuring that Tarija remains a vibrant destination throughout the year.
Tarija, Bolivia, showcases a compelling pattern in sunshine duration throughout the year, with a steady increase from the winter months towards the summer. Beginning in January with 263 hours of sunshine, the region sees a gradual rise in sunlight, peaking in March at 278 hours. This progressive increase lays the groundwork for the sunniest months, a trend that continues as spring transitions into summer. Notably, August emerges as the standout month with an impressive 316 hours of sunshine, symbolizing the climactic warmth and vibrancy of the region, while the subsequent months of September and October remain robust with 298 and 300 hours respectively.
As the year winds down, sunshine hours begin to taper slightly while still offering ample light, particularly during November and December, each maintaining around 300 hours. This persistent availability of sunlight ensures a favorable environment for agriculture and outdoor activities, making Tarija an appealing destination for those who appreciate sunny weather. Overall, the sunshine duration not only highlights the seasonal warmth of Tarija but also emphasizes its climate's suitability for various economic activities and lifestyle choices throughout the year.
The UV Index in Tarija, Bolivia, exhibits a pronounced seasonal pattern, reflecting the region's high levels of solar radiation, particularly during the summer months. From January to March, the UV Index remains exceptionally high, consistently at 17 and 16, indicating an extreme risk of harm from unprotected sun exposure, with a notably brief burn time of just 10 minutes. This trend continues as April still presents an extreme level of 13, emphasizing the importance of sun protection during these peak months. As the year progresses into late spring and early summer, the UV Index begins to slightly decrease, but remains notably high with a level of 10 in May and 8 to 9 in June and July, still indicating a very high risk.
By late summer and fall, Tarija experiences a return to extreme UV levels, particularly in August and November, where indices of 11 and 17 are recorded, alongside an even higher peak of 18 in December. The risk remains largely consistent across the year, with many months requiring a vigilant approach to sun safety, given the minimal burn times of only 10 to 15 minutes. Residents and visitors alike must be aware of these UV conditions, adopting protective measures to safeguard against potential skin damage throughout the year in this sun-drenched environment.
UV Risk Categories
In Tarija, Bolivia, daylight duration showcases a fascinating yearly cycle, with a distinct pattern that reflects the region's geographical position. During the summer months of January and December, residents enjoy a generous 13 hours of daylight, supporting a lively atmosphere ideal for outdoor activities and agricultural pursuits. As February and March progress into early autumn, daylight slightly decreases to 12 hours, maintaining a comfortable balance between light and darkness. This gradual transition continues into April and May, where daylight settles at 11 hours, offering a softer light that is particularly pleasant for daily life.
As winter approaches, daylight duration dips further, reaching a minimum of 10 hours in both June and July. Following this period, daylight duration begins to pick up again, returning to 11 hours in August and September, signaling a gradual return to brighter days. By October, daylight reaches 12 hours once more, culminating in the resurgence of longer daylight hours in late spring and early summer. The rhythmic cycle of daylight in Tarija not only influences daily routines but also serves as a reminder of the intricate connection between climate, geography, and the natural world.
Bermejo, Bolivia experiences a diverse climate with temperatures ranging from minimums of -3°C (27°F) in July to maximums peaking at 44°C (111°F) in October. The wet season spans from January to March, with January and March receiving the highest rainfall at 197 mm (7.8 in) and 257 mm (10.1 in), respectively. Notably, sunshine hours are abundant, especially from June to October, where July alone boasts 305 hours of sunlight. This combination of warmth, variability, and precipitation contributes to a unique climate throughout the year. For more details, visit Bermejo climate.
Entre Rios, Bolivia experiences a varied climate characterized by warm summers and cooler winters. Temperatures range from a low of -5°C (24°F) in July to highs reaching up to 35°C (96°F) in October. The region sees significant rainfall, particularly during the summer months, with January and February receiving over 200 mm (8 inches) each. Sunshine is abundant, averaging around 290 hours in May and peaking in August with 322 hours. For more detailed information, visit Entre Rios climate.
The climate in Tarija, Bolivia, is characterized by mild temperatures and distinct wet and dry seasons. January and February are the wettest months, with average temperatures ranging between 15°C (59°F) and 28°C (83°F), while precipitation peaks in December at 238 mm (9.4 in). The cooler months, particularly from May to August, see average temperatures drop to around 10°C (50°F) and lower rainfall, making it the driest period with minimal precipitation. Despite this, Tarija enjoys a high number of sunshine hours throughout the year, with October boasting approximately 339 hours. For more details, visit Tarija climate.
Villamontes, Bolivia, experiences a tropical climate characterized by high temperatures year-round, with January averaging around 28°C (82°F) and reaching maximums of up to 44°C (111°F) in October. Rainfall is significant from January to March, with February receiving the most precipitation at 196 mm (7.7 in), while the dry season occurs from May to August. Despite the rains, sunshine is abundant, especially in August, which boasts 304 hours of sunlight. Overall, the climate is marked by warm temperatures and seasonal rainfall, making it an interesting region for weather patterns. For more details, visit Villamontes climate.
Yacuiba, Bolivia, experiences a warm climate with significant temperature variation throughout the year. January and February are the hottest months, with daytime highs reaching up to 40°C (104°F), while June and July can drop to as low as -3°C (26°F). Precipitation peaks from January to March, with March receiving the most rainfall at 236 mm (9.3 in), while August is the driest month. The city enjoys abundant sunshine, particularly in August with 302 hours, providing a bright contrast to its rainy season. For more details, visit Yacuiba climate.
In conclusion, Tarija, Bolivia, presents a dynamic interplay of climatic factors that significantly shape its environmental and social landscape. From its pronounced temperature fluctuations and seasonal variations in precipitation to the remarkable sunshine and UV Index patterns, the region exhibits a climate characterized by distinct extremes and seasonal transitions. Residents and visitors alike must navigate these climatic nuances, from harnessing the abundant sunlight for agricultural productivity to adopting necessary protective measures against high UV exposure. As Tarija embraces the cyclical nature of its climate, understanding these patterns fosters a greater appreciation for the region's unique ecological richness and the resilience of its communities.