Climate and monthly weather forecast
San Carlos de Bariloche, Argentina

In the beautiful city of San Carlos de Bariloche, located in Argentina, the predominant climate, according to the Köppen Climate Classification, is Csb, known as the Mediterranean, warm summer. There are perturbations in temperature, precipitation, and sunlight exposure throughout the year in line with the seasons. Temperatures range all year round, with higher temperatures primarily observed between December and February, hovering around 20°C (68°F) to 22°C (71.6°F), and lower temperatures frequently sighted between June and August, roughly from 7°C (44.6°F) to 8°C (46.4°F).

There is also variability in the amount of monthly average rainfall, with May to August receiving the maximum precipitation systematically exceeding 133mm (5.24"). Comparatively, drier conditions tend to prevail from January to April and from October to December when rainfall quantities are approximately from 33mm (1.3") to 57mm (2.24"). The city also experiences variations in sunshine hours annually. Uppermost day-length is noted between November and January reaching 14.7 hours to 15.1 hours while minimum sunlight time, around 9.3 hours to 9.8 hours, is encountered predominantly between June and July.

The UV index pattern suggests higher radiation exposure can be anticipated from December to February where the index is between 10 and 12. On the other hand, the index dips down to its lowest from May to July ranging around 1 to 2. Consequently, it is clear that the weather of San Carlos de Bariloche exhibits a rich variety of climatic conditions shaped by the region's geo-environmental configuration.

With its captivating climate dynamics, the best time to plan a visit to San Carlos de Bariloche must account for personal preferences in weather conditions. Those who desire warmth and prolonged daylight, especially for outdoor activities, should consider visiting from December to February. Temperatures soar up to 22°C (71.6°F), sunlight duration extends up to 15.1 hours, and the UV index escalates to 12, signaling an intense sun which is optimal for activities such as hiking, tourism, and photography. Meanwhile, rainfall is moderate during these months, maxed at 47mm (1.85"), ensuring unbothered outdoor explorations.

The city's relatively cold and wet weather from May through August might seem less appealing to some tourists. During these months, temperatures drop down to 7°C (44.6°F) and rainfall increases significantly with up to 181mm (7.13"), which might interfere with outdoor attractions and activities. Furthermore, the reduced sunlight hours (approximately 9.5 hours) and low UV index suggest dimmer conditions during these cold, wet months.

Spring in San Carlos de Bariloche unfolds between September and November. During this period, the temperature usually ranges from 11°C (51.8°F) to 19°C (66.2°F). Sunshine hours progress gradually from 11.8 hours to 14.4 hours, encouraging outdoor enjoyment. Rainfall is relatively moderate, starting at 78mm (3.07") in September, and tapering off to 45mm (1.77") by November.

Summer in San Carlos de Bariloche lasts from December to February with temperatures encompassing a range from 20°C (68°F) to 22°C (71.6°F). This season enjoys the longest daylight hours, from 14.7 hours to 15.1 hours, while the UV index peaks at 12, marking intense sun exposure. Rainfall quantities are lower, between 33mm (1.3") and 47mm (1.85"), making the weather conducive for outdoor leisure.

Autumn extends from March to May in this region. Temperatures begin to retreat, ranging from 15°C (59°F) to 19°C (66.2°F) in March and slipping to 10°C (50°F) by May. The daylight duration also begins to shorten, retracting from 12.3 hours to 9.8 hours. Although the autumn season receives a considerable amount of rainfall amplified to 156mm (6.14") in May, it offers a unique blend of moderate temperature and lush environments.

The winter season in San Carlos de Bariloche, from June through August, is characterized by colder temperatures dipping to -1°C (30.2°F) and generous rainfall peaking at 181mm (7.13") in June. Daylight hours are also reduced during these months to around 9.5 hours, and the UV index is minimal, largely providing subdued sunlight that amplifies the cold sensations. Nevertheless, this period is ideal for tourists who appreciate the crisp winter climate and are enthralled by the sight of a city doused in rain.

Notably, January in San Carlos de Bariloche is characterized by the longest daylight exposure, reaching peak values of 14.7 hours per day. Temperatures follow the summer trend, typically warm but pleasant. Rainfall is consistent with the summer pattern but does not make the weather less appealing to visitors. Weather in January »

In February, the weather conditions in San Carlos de Bariloche are largely unchanged from January, but daylight hours decrease slightly. Temperatures remain high, providing a warm climate for outdoor activities. Rainfall follows the trend established in January, contributing to the freshening up of the area. Weather in February »

In March, there is an observable escalation in rainfall, reaching up to 57mm (2.24"), which contrasts with the decreasing temperature trend. The weather becomes cooler, heralding the onset of autumn. Daylight hours continue to decrease, and the UV index slides downwards, indicating the diminishing intensity of the sun. Weather in March »

The climate shift in San Carlos de Bariloche continues in April with the characteristic cooling of temperatures associated with autumn in full swing. The increase in rainfall witnessed in March prevails, nurturing the local flora and fauna. Weather in April »

May is distinguished by noticeable weather changes in San Carlos de Bariloche, particularly a 156mm (6.14") spike in rainfall. It marks the transition from autumn to winter - temperatures plummet, and daylight hours drop concurrently. Weather in May »

San Carlos de Bariloche weather in June is best described as winter-like; low temperatures, lengthy rainfall periods and shortened daylight hours are the norm. The UV index reaches its lowest point, aligning with the diminished strength of the sun. Weather in June »

July experiences the highest levels of rainfall, with a zenith of 181mm (7.13"). Low temperatures, reduced daylight hours, and the minimal UV index signify the depth of winter in full swing in San Carlos de Bariloche. Snow cover is likely, enhancing the city's winter appeal and providing ideal conditions for winter sports enthusiasts. Weather in July »

August in San Carlos de Bariloche maintains the winter trend, but with a notable decrease in rainfall down to 133mm (5.24"). The chilly temperatures and reduced daylight hours continue to hold sway. The intensity of the sun remains low, as evidenced by the similar UV index readings. Weather in August »

September signals changes in the weather pattern in San Carlos de Bariloche, as rainfall drops to 78mm (3.07"). There is a marked transition from winter to spring, with temperatures beginning to rise and daylight hours increasing. Weather in September »

October in San Carlos de Bariloche sees a continuation of the spring trends initiated in September. Temperatures keep increasing, making the weather more pleasant and accommodating for outdoor activities. Daylight hours continue their march upwards, matching the improvements in the overall weather. Weather in October »

November is an ideal time for outdoor explorations in San Carlos de Bariloche, as the weather continues its transition to summer conditions. As spring gives way to summer, the increase in temperatures provides warmer weather. There is a lift in daylight hours and a concurrent rise in the UV index. Weather in November »

In December, San Carlos de Bariloche marks the full onset of summer, with temperatures and daylight continuing their upward trend. The weather stands out for its warmth and the abundance of sunshine. The reduction in rainfall that started in November prevails, resulting in a noticeably drier period. Weather in December »