Climate and monthly weather forecast
Juliaca, Peru

Situated in the high plateaus of the central Andean region, within the territorial confines of Peru, Juliaca enjoys a Marine west coast, warm summer climate, as defined by the Köppen climate classification system. This type of weather, designated as Cfb, is prevalent in regions where the average temperature for the warmest month stays below 22°C (71.6°F), but above 10°C (50°F) for at least four months. Rainfall patterns demonstrate a distinct lack of seasonal variation in Juliaca, where the wettest month (January) receives 133mm (5.24") of rainfall, while the driest month (July) sees a drastically decreased volume of precipitation at only 2mm (0.08").

Temperatures in Juliaca exhibit a moderate variation throughout the year without extreme fluctuations, maintaining a consistent range from the lowest average temperatures in July at -7.5°C (18.5°F), to the highest in November at 18.8°C (65.8°F). Daylight hours display a subtle swing, from the shortest span of 11.2 hours in June to an extended span of 13 hours in December.

An important aspect of Juliaca's weather is the considerable disparity between the high daytime temperatures and the dropping temperatures after sunset. This feature is particularly concerted in the cold months of June and July. Furthermore, due to its elevational disposition, the city witnesses incredibly low temperatures even when the overall climate is characterized by high temperatures, which is a distinctive weather pattern in this part of the world.

For travellers desiring to seek the best climatic conditions, the period from September to November proves optimal for exploring Juliaca. During these months, the city experiences comfortably mild temperatures ranging from 17.6°C (63.7°F) to 18.8°C (65.8°F) coupled with relatively low rainfall, providing favourable conditions for outdoor activities and sightseeing.

Travelers may find difficulty during the winter months from June to August when severe cold conditions dominate, pushing temperatures down to as low as -7.5°C (18.5°F). Coupled with less daylight, averaging around 11.3 hours, these conditions are not typically conducive for tourist activities, setting these months as the least appealing period for visits.

Spring sees a mix of mild and warm temperatures in Juliaca, with the average temperatures varying between 16°C (60.8°F) in March to 16.8°C (62.2°F) in May, alongside the lows fluctuating from 3.2°C (37.8°F) to -3.8°C (25.2°F) respectively. Spring is largely marked by diminishing rainfall going from 99mm (3.9") in March to a much lesser 10mm (0.39") by May which translates into fewer damp and overcast days.

Summer season in Juliaca, occurring from June to August doesn't conform to the conventional definition of a hot and dry summer. It is marked by low temperatures, with the average highs ranging from 16°C (60.8°F) in June to 17.6°C (63.7°F) in August, and the lows plunging down from -7°C (19.4°F) to -1.4°C (29.5°F). Rainfall during this period is also minimal, with the months receiving between 3mm (0.12") and 22mm (0.87") precipitation.

Autumn in Juliaca, spanning from September to November, witnesses a comfortable and pleasant climate. Despite experiencing a gradual increase in rainfall from 22mm (0.87") in September to 55mm (2.17") in November, temperatures remain largely stable. The highest average temperatures oscillate between 17.6°C (63.7°F) and 18.8°C (65.8°F), and the lower averages range from -1.4°C (29.5°F) to 1.5°C (34.7°F).

Winter in Juliaca is characterized by a considerable drop in temperature with the lowest average going down to -7.5°C (18.5°F) in July. The highest average temperature doesn't exceed 17°C (62.6°F) during these months. A rather atypical feature is a significant reduction in rainfall during winter with average precipitation figures ranging from 3mm (0.12") to 6mm (0.24"), contrary to popular expectations of heavy rainfall in winters. This makes Juliaca quite unique, as winter months are typically associated with snowfall rather than low precipitation levels, given its high-altitude location.

Juliaca, Peru sees the arrival of the wettest month of the year in January. The rainfall chart registers a peak this month, with 133mm (5.24") falling from the sky. Amid the showers, daylight extends to 12.9 hours, longer than the year-round average. Weather in January »

Moving into February, a slight decrease in both rainfall and daylight hours occurs in Juliaca. February records an average rainfall of 109mm (4.29") and 12.6 daylight hours. Nonetheless, the weather still retains the cool and damp characteristics of the preceding month. Weather in February »

In March, the town of Juliaca experiences a distinctive moderation in climatic conditions. The amount of rainfall further dips to 99mm (3.9"), hinting at the conclusion of the wet season. Interestingly, the weather remains fairly cool, making it comfortable for residents and tourists alike. Weather in March »

April sees a significant drop in precipitation in Juliaca. Skies become clearer, and the city receives a mere 43mm (1.69") of rainfall. Along with reduced showers, temperatures continue to fall slightly. Clearer conditions allow for better visibility, unveiling the stunning vistas of the city. Weather in April »

As May arrives, Juliaca experiences an onset of distinctly dry and chilly conditions. A dramatic drop in precipitation levels is evident with an average of just 10mm (0.39") for the month. The temperature, already on a downward trajectory, plummets further, making the evenings colder. Weather in May »

With the advent of June, the mercury level drops further in Juliaca, marking the arrival of the coldest month. The rainfall touchs its lowest point, staying at 3mm (0.12") during the entire month. The cooler temperatures lend a unique charm to the city as it transitions fully into the dry season. Weather in June »

In Juliaca, July maintains the trend of low temperatures and scanty rainfall. This trend hits a nadir, with a low of 3mm (0.12") of rain and a significant drop in minimum temperature to -7.5°C (18.5°F). The cool, dry conditions make it an ideal time for outdoor explorations, with locals and tourists flocking to nearby attractions. Weather in July »

By August, Juliaca sees a slight hike in minimum temperature and rainfall. Rainfall registers a low, but noticeable increase to 6mm (0.24"). The advancement in rainfall brings a modest increase in the lushness of the landscape. A gentle vibe of revival can be felt in the city as the arid conditions recede slightly. Weather in August »

Come September, there's a respite from the chilly conditions in Juliaca. An upward swing is observed as the lowest temperature rises to -1.4°C (29.5°F). It’s an interesting period where the city transitions into a relatively warmer temperature range. Weather in September »

October in Juliaca greets locals and visitors with a noticeable jump in both temperature and rainfall. With a substantial increase in precipitation to 41mm (1.61"), October begins the journey back to the wet season. The change in weather announces the arrival of different blooms in the locale, each adding a dash of color to the surroundings. Weather in October »

November brings to Juliaca an even greater increase in rainfall with a tally of 55mm (2.17"). This abundance of rainfall rejuvenates the city's vegetation, making the landscape ever vibrant. An increase in daily temperatures is also evident, supporting the sprouting of new life in local flora. Weather in November »

December in Juliaca consolidates the departure from the dry season. Precipitation increases considerably, reaching a high of 86mm (3.39") for the month. Alongside the rise in precipitation, temperatures also rise, with a marked increase in minimum temperatures. Weather in December »