Last updated: August 21, 2025
In September, Ushuaia experiences a crisp shift into spring, with daytime temperatures typically reaching a maximum of 10°C (51°F) and plummeting to a chilly minimum of -11°C (12°F) at night. The average temperature hovers around a brisk 1°C (34°F). During this month, precipitation is frequent, with approximately 64 mm (2.5 in) of rain falling over 16 days, contributing to an 84% humidity level that adds to the cool, damp atmosphere. This climate creates a unique backdrop for visitors, offering a blend of stunning natural beauty and invigorating weather conditions.
In September, Ushuaia experiences the tail end of winter, with temperatures slowly beginning to climb. The chilly days see a minimum of -11°C (12°F) and an average temperature of just 1°C (34°F), while the maximum reaches a modest 10°C (51°F). This transitional month bridges the stark cold of winter and the milder conditions of early spring, making it a time of gradual warming. As the days lengthen and the sun begins to assert its presence, you can expect a mix of crisp air and the first hints of a thaw, setting the stage for the more temperate months ahead. It's a perfect time for those seeking to embrace the unique charm of Ushuaia as it awakens from its winter slumber.
In September, Ushuaia experiences a moderate precipitation level of 64 mm (2.5 in), observed over approximately 16 days of the month. This rainfall marks a gradual decline from the wetter winter months, following August's higher average of 79 mm (3.1 in). As spring approaches, the daily precipitation becomes less frequent, hinting at a transition to drier conditions in the coming months. Interestingly, this dip is accompanied by more stable weather patterns, setting the stage for October and its expected increase in rainfall to 71 mm (2.8 in), as Ushuaia shifts into a new seasonal rhythm.
In September, Ushuaia experiences a humidity level of 84%, marking a slight decrease from the peak of 86% observed in the preceding months. This trend reflects the region's characteristic climate, where humidity remains relatively high throughout the year, fluctuating gently between 82% and 86%. As winter transitions to spring, the city begins to shed the damp chill, resulting in a subtle drop in humidity. With October's humidity returning to a similar level of 83%, Ushuaia continues to showcase its maritime influence, making it a unique destination for those intrigued by its ever-present humidity and stunning landscapes.
As September unfolds in Ushuaia, Argentina, the UV Index reaches a moderate level of 5, indicating that while sun protection is advisable, the risks are not as severe as in the peak summer months. This marks a shift from the higher values experienced in January and February, where exposure was classified as very high, necessitating quick 15-minute burn times. With September’s burn time extending to 30 minutes, it’s an opportune period to enjoy the early spring sunshine while being mindful of UV exposure. The trend suggests a gentle transition towards milder sun intensity before the UV Index spikes again in October. For more detailed information on UV levels throughout the year, visit Ushuaia UV Index.
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As September arrives in Ushuaia, Argentina, the daylight begins to stretch and with it, a noticeable increase in sunshine brightens the landscape. With 192 hours of sunlight, September marks a transitional moment, offering a refreshing boost from the winter months of June and July, which witness the least sun. This upward trend hints at the approaching summer, as October promises even more brightness with 260 hours of light, paving the way for November and December, which shine at 297 and 310 hours, respectively. Nature begins to awaken, and Ushuaia's stunning scenery emerges under the gentle warmth of increasing sunlit hours, inviting both locals and travelers to revel in the beauty of spring.
In Ushuaia, Argentina, September marks a brightening shift in the weather pattern, showcasing a promising 29% chance of sunny days. As winter bids farewell, the likelihood of sunshine begins to climb, setting the stage for a gradual transition into spring. This increase follows the more subdued summer months, where the chances hover around 25% in February and March, culminating in one of the highest probabilities for sun in the year thus far. With each passing month from the depths of winter, the returning light hints at the vibrant beauty of Ushuaia’s landscapes, inviting both locals and travelers to embrace the awakening season.
As September unfolds in Ushuaia, Argentina, the city begins to emerge from the grip of winter with a noticeable increase in daylight. With 11 hours of daylight, this month marks a transition from the long, dark days of June and July, which offered only about 7 hours of sunlight. Following the fleeting days of winter, September's daylight duration gradually paves the way toward the vibrant spring and summer months, culminating in an impressive 16 hours of sunlight by November. As the city welcomes longer days, residents and visitors alike can savor the warmth and beauty of the landscape awakening from its cold slumber.
As September arrives in Ushuaia, the winds begin to shift, maintaining an average speed of 2.4 m/s (5 mph), consistent with the preceding months of August and July. This slight resurgence from the low points observed in June and May indicates a subtle return to the more dynamic weather patterns that characterize the region. Interestingly, the wind speeds in September remain relatively moderate compared to the upcoming months, where October and November are anticipated to usher in stronger gusts, both averaging 3.2 m/s (7 mph). Overall, September serves as a transitional period, with gentle breezes hinting at the invigorating winds that will soon sweep through this southernmost city.
Weather in Ushuaia varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ushuaia, focusing on differences in temperature, rainfall, humidity, and UV levels.
September typically sees temperatures ranging from a chilly minimum of -11°C (12°F) to a maximum of 10°C (51°F), with an average of around 1°C (34°F). This month experiences 64 mm (2.5 in) of precipitation over approximately 16 days, accompanied by high humidity at 84%. In contrast, January presents a milder climate with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 20°C (69°F), resulting in an average temperature of 8°C (47°F). Precipitation is significantly higher at 102 mm (4.0 in) over 22 days, while humidity remains slightly lower at 83%. For a more detailed look at January weather in Ushuaia, check out Ushuaia weather in January.
In September, Ushuaia experiences cooler temperatures with a minimum of -11°C (12°F) and an average of 1°C (34°F), while February sees milder conditions, starting at a minimum of -3°C (27°F) and averaging 8°C (47°F). Precipitation is fairly common in both months, with September recording 64 mm (2.5 in) over 16 days, compared to February's 91 mm (3.6 in) across 18 days. Humidity levels remain high in both months, slightly rising from 84% in September to 85% in February, creating a damp atmosphere as summer approaches. For more detailed information about February weather in Ushuaia, visit Ushuaia weather in February.
In September, Ushuaia experiences colder temperatures, with a minimum of -11°C (12°F) and an average of just 1°C (34°F), while March sees a milder climate, with lows around -3°C (28°F) and averages reaching 7°C (44°F). The maximum temperatures in September peak at 10°C (51°F), in contrast to March's higher maximum of 17°C (62°F). Additionally, September has a lower total precipitation of 64 mm (2.5 in) over 16 days, compared to March's wetter conditions, which receive 102 mm (4.0 in) of rain across 19 days. Humidity levels remain relatively close in both months, with September at 84% and March at 85%. For more detailed information, you can visit Ushuaia weather in March.
In comparing the weather of September and April, it's evident that April tends to be milder overall. September has a minimum temperature of -11°C (12°F) and an average of 1°C (34°F), while April's temperatures range from a minimum of -7°C (19°F) to an average of 4°C (40°F). Additionally, April can reach a maximum of 17°C (63°F), significantly warmer than September's maximum of 10°C (51°F). Both months experience considerable precipitation, with September registering 64 mm (2.5 in) over 16 days and April slightly higher at 75 mm (2.9 in) over 18 days. Humidity levels are quite similar, with September at 84% and April at 86%. For more detailed information on April's weather, you can visit Ushuaia weather in April.
In comparing the weather in September and May, we see some intriguing similarities and differences. Both months experience cold temperatures, with September having a slightly lower average of 1°C (34°F) compared to May's average of 2°C (36°F). The maximum temperatures are nearly identical, with September reaching 10°C (51°F) and May slightly ahead at 11°C (53°F). Precipitation levels are comparable, with September averaging 64 mm (2.5 in) across 16 days and May slightly higher at 66 mm (2.6 in) over 15 days. Humidity remains consistently high in both months, at 84% for September and 86% for May. For those looking to explore more about May's weather specifics, you can refer to Ushuaia weather in May.
When comparing the weather in September and June, September generally offers slightly milder conditions, with average temperatures around 1°C (34°F) compared to June's average of -1°C (30°F). While both months experience cold temperatures, September sees a maximum of 10°C (51°F), whereas June only reaches up to 6°C (43°F). Precipitation levels are higher in September, with 64 mm (2.5 in) falling over 16 days, while June receives 46 mm (1.8 in) across 14 days. Interestingly, both months have high humidity, making it feel even colder, with September at 84% and June at 86%. For more details on June weather, you can check this link: Ushuaia weather in June.
When comparing the weather in September and July, it is evident that September tends to be slightly warmer overall. September boasts an average temperature of 1°C (34°F), with maximums reaching 10°C (51°F), while July's average temperature is slightly cooler at -1°C (30°F), with maximums only reaching 7°C (45°F). In terms of precipitation, September sees 64 mm (2.5 in) over 16 days, compared to July's 51 mm (2.0 in) over 14 days. Humidity levels remain quite similar, with September at 84% and July at 85%. For more detailed insights, you can refer to Ushuaia weather in July.
In comparing the weather of September and August, September exhibits slightly milder temperatures with an average of 1°C (34°F) and a maximum of 10°C (51°F), whereas August has a lower average temperature of -1°C (31°F) with a maximum of 7°C (45°F). Both months see substantial precipitation, with September receiving 64 mm (2.5 in) across 16 days and August having 79 mm (3.1 in) over 18 days. Humidity levels remain high in both months, at 84% for September and 85% for August, making for a damp atmosphere. For more detailed information, you can check out Ushuaia weather in August.
In September, the weather in Ushuaia is characterized by colder temperatures, with a minimum of -11°C (12°F) and an average around 1°C (34°F), peaking at a maximum of 10°C (51°F). The month sees a total precipitation of 64 mm (2.5 in) over 16 days, accompanied by a high humidity level of 84%. In contrast, October experiences slightly milder conditions, with a minimum of -8°C (18°F), an average temperature of 3°C (38°F), and a maximum reaching 14°C (58°F). Precipitation increases to 71 mm (2.8 in) across 19 days, while humidity remains relatively stable at 83%. For more detailed information, you can check Ushuaia weather in October.
In September, the weather is characterized by cooler temperatures, with a minimum of -11°C (12°F) and an average of 1°C (34°F), while the maximum reaches only 10°C (51°F). This month sees around 64 mm (2.5 in) of precipitation over 16 days, accompanied by high humidity at 84%. In contrast, November experiences a milder climate, featuring a minimum temperature of -3°C (26°F) and an average of 6°C (43°F), peaking at 18°C (65°F). This month also shows increased precipitation of 86 mm (3.4 in), spread over 21 days, while maintaining the same humidity level of 84%. For a detailed look at what to expect, you can check Ushuaia weather in November.
In September, the weather in Ushuaia is quite chilly, with average temperatures around 1°C (34°F) and a maximum of only 10°C (51°F). The month also sees significant precipitation, totaling 64 mm (2.5 in) over 16 days, while humidity remains high at 84%. In contrast, December brings milder temperatures, with an average of 8°C (46°F) and highs reaching 19°C (66°F). However, December experiences increased rainfall, accumulating 99 mm (3.9 in) across 23 days, and a slightly lower humidity level of 82%. For more details on December's weather, you can check Ushuaia weather in December.
As September ushers in the spring season in Ushuaia, the weather begins to shift from the harsh winter months. While temperatures slowly rise, with maximums reaching up to 10°C (51°F), the average remains chilly at just 1°C (34°F). The transition is marked by increased precipitation, with about 64 mm (2.5 in) falling over 16 days, contributing to the rejuvenation of the landscape after a long, cold season. Despite the rising temperatures, humidity levels stay relatively high at around 84%, adding a briskness to the air that invigorates the senses. For those intrigued by the variations of climate in this stunning location, more details can be found in the Ushuaia Climate.