Last updated: August 21, 2025
September in San Carlos de Bariloche, Argentina, brings a transition between the chill of winter and the emergence of spring, with temperatures fluctuating from a maximum of 17°C (63°F) to a biting minimum of -8°C (18°F). The average temperature settles around 2°C (36°F), creating a refreshing, brisk atmosphere. This month sees about 62 mm (2.4 in) of precipitation over approximately 9 days, contributing to the region's lush landscapes. With humidity levels hovering at a notable 85%, visitors can expect a crisp, invigorating climate ideal for embracing the breathtaking views and outdoor activities that Bariloche has to offer.
In September, San Carlos de Bariloche experiences a notable transition as winter recedes, with temperatures ranging from a chilly minimum of -8°C (18°F) to a pleasant maximum of 17°C (63°F). The average temperature hovers around 2°C (36°F), marking a gradual warming trend that foreshadows the arrival of spring. Compared to the preceding months, this shift reflects a shift away from the harsh winter cold, evident in the gradual rise in day temperatures while icy nights still linger. As the month progresses, the landscape sheds its winter coat, inviting locals and travelers alike to embrace the invigorating allure of the great outdoors and the breathtaking natural beauty of the region.
In September, San Carlos de Bariloche experiences a shift towards spring, with precipitation totaling 62 mm (2.4 in) over approximately 9 days of rain. This marks a notable decrease in rainfall compared to the previous winter months, where precipitation levels peaked, particularly in June and July with 173 mm (6.8 in) and 145 mm (5.7 in), respectively. As the region transitions into warmer weather, September's rainfall embodies the fluctuating patterns typical of the season, bridging the gap between the wet winter and the drier months ahead. This change not only revitalizes the landscape but also sets the stage for the emerging spring blooms that enliven the area.
In September, San Carlos de Bariloche experiences a notable humidity level of 85%, marking a slight decline from the peak months of July and August, which recorded 90%. Following the trend of increasing humidity from the earlier months of the year—January’s 70% and February's 69%—September ushers in a transition towards drier conditions as the year progresses into spring. As autumn approaches, residents and visitors alike can expect a more refreshing atmosphere compared to the previous winter months, while still enjoying the lush, vibrant landscapes that the high humidity has helped nurture.
As September rolls into San Carlos de Bariloche, the UV Index marks an increase to 8, placing it in the very high exposure category with a burn time of just 15 minutes. This uptick follows the moderate levels of summer, indicating a shift in sunlight intensity as the region transitions into spring. While the earlier months showcased UV Index levels from 3 to 6, September serves as a precursor to the more intense rays expected in October, where the UV again rises to 10. This trend highlights the importance of sun safety as the wavelengths grow stronger, making it essential for residents and visitors alike to be mindful of UV exposure. For detailed information on UV levels throughout the year, check out San Carlos de Bariloche UV Index.
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As September rolls in with its vibrant hues, San Carlos de Bariloche experiences a delightful transition, basking in 269 hours of sunshine. This marks a notable increase from the previous months, suggesting that the cooler winter days are giving way to the warmth of spring. After the sunniest months of January and February, which bask in over 300 hours of daylight, September’s glow signals a gentle resurgence of light, setting the stage for more outdoor adventures. While the city enjoyed a peak in sunshine during the late spring and summer months, September brings a refreshing balance, offering ample opportunities to explore the breathtaking landscapes as nature awakens from its winter slumber.
As September unfolds in San Carlos de Bariloche, the chances of basking in sunny weather rise to 39%, signaling a noticeable transition from the dreary winter months. This modest increase follows the relatively gloomy days of June and July, where sunlight graces the region only about 22-24% of the time. While September's weather may still be playful, teasing with more clouds than sun, it marks a shift towards the sunnier and milder conditions of spring, hinting at a brighter October ahead with a 45% chance of sunshine. The gradual climb in sunny days throughout the late winter and early spring months paints an optimistic picture for outdoor enthusiasts eager to embrace the beauty of Bariloche’s landscapes.
As September unfolds in San Carlos de Bariloche, daylight begins to extend its embrace, offering approximately 11 hours of sunlight. This marks a gentle rise from the deepening twilight of winter months, where daylight was consistently shorter at 9 hours from June to August. The trend shows a gradual transition towards longer days, which continues into October with 13 hours of daylight, signaling the approach of spring and brighter times ahead. This seasonal shift enhances the stunning landscapes of Bariloche, inviting both locals and tourists to bask in the growing warmth and vibrant natural beauty of the region.
In September, the wind in San Carlos de Bariloche experiences a gentle shift, with an average speed of 2.2 m/s (5 mph). This slight decrease from the more robust breezes of winter hints at the transition toward the warmer months ahead. Historically, September's winds mirror those of the previous months, maintaining a tender consistency while providing just enough movement to remind locals of the area's invigorating climate. As the landscape begins to awaken from its winter slumber, the soft winds foreshadow the vibrant energy of spring, suggesting a gradual return to the lively outdoor adventures that await in the coming weeks. With the winds expected to pick up again in October, those in Bariloche can look forward to a refreshing blend of calm and brisk days as the season unfolds.
Weather in San Carlos de Bariloche varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Carlos de Bariloche, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in September and January, notable differences can be observed. September tends to be cooler, with temperatures ranging from a minimum of -8°C (18°F) to a maximum of 17°C (63°F), while January boasts much warmer conditions, with lows of -3°C (27°F) and highs reaching 30°C (86°F). Additionally, September experiences higher humidity at 85% and considerably more precipitation, with 62 mm (2.4 in) over about 9 days. In contrast, January sees a decrease in rainfall, totaling only 29 mm (1.1 in) across just 3 days and a lower humidity level of 70%. For more details about January weather, you can check San Carlos de Bariloche weather in January.
September and February present contrasting weather patterns that highlight the transition from late winter to late summer. In September, temperatures range from a chilly minimum of -8°C (18°F) to a milder maximum of 17°C (63°F), with an average of 2°C (36°F). This month also sees 62 mm (2.4 in) of precipitation over 9 days, along with high humidity at 85%. In stark contrast, February experiences much warmer temperatures, with a minimum of -1°C (30°F), an average of 14°C (57°F), and a maximum that can reach up to 32°C (89°F). Additionally, February is considerably drier, receiving only 22 mm (0.9 in) of precipitation over just 4 days, and humidity levels drop to 69%. For a more detailed look at February weather, check out San Carlos de Bariloche weather in February.
In September, the weather in San Carlos de Bariloche is characterized by cooler temperatures, with an average around 2°C (36°F) and a maximum of 17°C (63°F). The region experiences quite a bit of precipitation, totaling 62 mm (2.4 in) over about 9 days, and humidity levels are notably high at 85%. In contrast, March brings a warmer climate, with an average temperature of 10°C (51°F) and highs reaching up to 30°C (86°F). Precipitation is slightly lower at 49 mm (1.9 in), occurring over just 6 days, and the humidity drops to 73%. This transition from September to March highlights a significant shift from cool, damp weather to warmer conditions, making March more conducive for outdoor activities. For more details, check out San Carlos de Bariloche weather in March.
In comparing the weather between September and April, we see notable differences in temperature and humidity. September experiences a minimum temperature of -8°C (18°F) and an average temperature of 2°C (36°F), with a maximum of 17°C (63°F). In contrast, April has a slightly warmer minimum of -8°C (18°F), an average temperature of 7°C (45°F), and a higher maximum of 21°C (71°F). Both months see similar levels of precipitation, with September receiving 62 mm (2.4 in) over 9 days, and April with 60 mm (2.3 in) over 8 days. Additionally, September has a humidity level of 85%, while April's humidity is slightly lower at 82%. For more details, visit San Carlos de Bariloche weather in April.
When comparing the weather in September and May, we find notable differences in temperature and precipitation patterns. In September, temperatures range from a minimum of -8°C (18°F) to a maximum of 17°C (63°F), with an average of 2°C (36°F) and 62 mm (2.4 in) of precipitation over 9 days. On the other hand, May exhibits slightly cooler temperatures, with a minimum of -10°C (15°F) and a maximum of 19°C (66°F), averaging 4°C (39°F). Additionally, May experiences more precipitation, totaling 101 mm (4.0 in) over 13 days. Humidity levels are also relatively high in both months, with September at 85% and May at 88%. For further information on May's weather, you can visit San Carlos de Bariloche weather in May.
In comparing the weather between September and June, notable differences emerge in both temperature and precipitation patterns. September records a more moderate temperature range, with a minimum of -8°C (18°F), an average of 2°C (36°F), and a maximum of 17°C (63°F). In contrast, June tends to be cooler overall, with temperatures ranging from a minimum of -11°C (12°F) to a maximum of 10°C (50°F) and an average of only 1°C (34°F). Additionally, June experiences significantly more rainfall, totaling 173 mm (6.8 in) over 17 days, compared to September's 62 mm (2.4 in) over 9 days. This results in slightly higher humidity levels in June at 88%, versus 85% in September. For more detailed information on June weather, visit San Carlos de Bariloche weather in June.
When comparing the weather in September and July, several notable differences emerge. September sees a moderate temperature range, with minimums around -8°C (18°F) and maximums reaching up to 17°C (63°F), resulting in a more pleasant average of 2°C (36°F). In contrast, July is much colder, with temperatures dipping as low as -13°C (9°F) and only peaking at 10°C (50°F), leading to an average of 0°C (32°F). Additionally, September experiences less precipitation, totaling 62 mm (2.4 in) over 9 days, while July is considerably wetter, with rainfall amounting to 145 mm (5.7 in) across 14 days. Humidity levels are slightly higher in July at 90%, compared to September's 85%. For further details on July weather, you can visit San Carlos de Bariloche weather in July.
In comparing the weather between August and September, we can observe a slight warming trend. September boasts a minimum temperature of -8°C (18°F) and an average high of 17°C (63°F), indicating a more comfortable climate than August, which has a minimum of -9°C (16°F) and a maximum of only 11°C (52°F). Precipitation levels also differ, with September receiving 62 mm (2.4 in) over 9 days, compared to August's considerable 136 mm (5.4 in) over 17 days. Humidity remains relatively high in both months, with September at 85% and August slightly higher at 90%. For more detailed insights into August's weather, you can check San Carlos de Bariloche weather in August.
September and October in San Carlos de Bariloche display notable differences in weather patterns. In September, temperatures range from a minimum of -8°C (18°F) to a maximum of 17°C (63°F), with an average of 2°C (36°F). Precipitation is recorded at 62 mm (2.4 in) over 9 days, and humidity sits at a high 85%. In contrast, October brings slightly colder temperatures, with a minimum of -9°C (17°F) and a maximum reaching 22°C (71°F), averaging 4°C (40°F). This month also sees increased precipitation at 78 mm (3.1 in) spread over 12 days, but with reduced humidity at 79%. For more details, check out this resource: San Carlos de Bariloche weather in October.
In comparing the weather between September and November, we see a notable increase in temperature as November presents milder conditions. September's minimum temperature can reach as low as -8°C (18°F), with an average of 2°C (36°F) and a maximum of 17°C (63°F). In contrast, November features a more moderate range, with minimum temperatures of -4°C (25°F), an average of 8°C (47°F), and highs peaking at 24°C (76°F). Additionally, while September experiences slightly higher precipitation at 62 mm (2.4 in) over 9 days, November sees a marginal decrease in rainfall at 55 mm (2.2 in) over the same number of days, accompanied by lower humidity levels of 71% compared to September's 85%. For more detailed information, you can check San Carlos de Bariloche weather in November.
In comparing the weather of September and December, we find notable differences in temperature and humidity. September tends to be cooler with a minimum temperature of -8°C (18°F) and an average of 2°C (36°F), while December enjoys milder conditions with a minimum of -1°C (30°F) and an average of 11°C (53°F). The maximum temperatures also reflect this shift, soaring to 28°C (83°F) in December compared to September's 17°C (63°F). Additionally, September experiences higher humidity levels at 85% and more precipitation, totaling 62 mm (2.4 in) over 9 days, while December has lower humidity at 73% and less precipitation at 43 mm (1.7 in) over just 6 days. For more details on December weather, you can visit San Carlos de Bariloche weather in December.
As September unfolds in San Carlos de Bariloche, the weather marks a transition to spring, bringing a unique charm distinct from the chill of winter months. Temperatures begin to rise, offering a refreshing average of 2°C, while the landscape starts to bloom after the colder season. However, it's not all sunshine; expect a few rainy days, with rainfall totaling about 62 mm throughout the month. The air remains humid, enhancing the fresh scent of blooming flora against the backdrop of breathtaking scenery. For a more detailed understanding of seasonal shifts, check out San Carlos de Bariloche Climate.