Last updated: August 21, 2025
September in San Martin de los Andes, Argentina unveils a striking transition from winter to spring, with temperatures ranging from a chilly -10°C (14°F) at night to a pleasant 18°C (65°F) during the day. The average temperature hovers around 2°C (36°F), inviting visitors to enjoy the crisp alpine air. While the region experiences approximately 81 mm (3.2 in) of precipitation over 10 days, the humidity remains high at 85%, creating a lush landscape ripe for exploration. This month is perfect for those seeking a blend of cooler temperatures and the beginnings of vibrant spring life.
In September, San Martin de los Andes experiences the tail end of winter as it transitions into spring. The temperatures gradually rise, with minimums hovering around -10°C (14°F) and maximums reaching a comfortable 18°C (65°F). This month marks a notable shift from the bitter cold of the previous months, with an average temperature of 2°C (36°F) serving as a signal of the approaching warmth. As the days grow longer and milder, the landscape begins to awaken, making September an exciting time for outdoor enthusiasts eager to witness the beauty of blossoming flora against the backdrop of the Andes.
In September, San Martin de los Andes experiences a notable transition as winter gives way to spring, bringing a moderate precipitation total of 81 mm (3.2 in) over approximately 10 days. This amount is a drop from the heavier rains of August, yet it still signifies a lively atmosphere as the region begins to awaken from its cold slumber. With comparatively lower rainfall than the preceding winter months of June (228 mm) and July (198 mm), September offers a refreshing change while maintaining enough moisture to support the blooming landscapes. As the season progresses, locals and visitors alike can expect a dynamic interplay of rainy periods and clearer skies, paving the way for vibrant spring activities.
In September, San Martin de los Andes experiences a noticeable shift in humidity levels, settling at 85%. This marks a decline from the peak of 90% during the winter months of July and August, while still remaining higher than the summer months. As the year transitions into spring, the gradual decrease in humidity suggests a freshening ambiance, as the landscape begins to awaken from its winter slumber. Following the trend, humidity will continue to drop in the upcoming months, with October expected at 79%, signaling a shift towards drier air. Overall, the September climate encapsulates a perfect balance, offering both the crispness of early spring and the lingering moisture from winter.
In September, the sun begins to shine a bit brighter in San Martin de los Andes, with the UV Index rising to 8, classified as very high. This marks a noticeable shift from the moderate levels experienced in the earlier winter months. With a burn time of just 15 minutes, it's essential for residents and visitors alike to take precautions and embrace sun safety, as skin can become sensitive to UV exposure. As the seasons transition into spring, the UV index will continue to fluctuate, ultimately paving the way for even more extreme levels in the coming months. For those planning outdoor activities, keeping an eye on the UV index is key to enjoying the stunning landscapes without compromising skin health. Discover more about the UV conditions throughout the year at San Martin de los Andes UV Index.
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As September arrives in San Martin de los Andes, the fading whispers of winter give way to a promising tapestry of sunshine, boasting 267 hours of radiant daylight. This marks a subtle increase from August's 220 hours, indicating a gradual warming as nature comes alive. The trend continues with more sunlight in the months ahead—October and November shine even brighter, reaching 298 and 339 hours, respectively. This transition not only enhances the stunning landscapes but also invites visitors to explore the vibrant flora and engaging outdoor activities that flourish under the September sun. Embracing the change of season, San Martin de los Andes emerges as a picturesque destination for those seeking the beauty of spring in the heart of the Andes.
In September, the likelihood of sunny weather in San Martin de los Andes begins to rise as winter gives way to spring. With a 43% chance of sunshine, the month marks a slight improvement compared to the winter months, though it still falls short of the sunnier days ahead in October and November. As the weather warms, residents and visitors alike can look forward to more golden hours, making September a transitional month where the promise of longer, brighter days begins to emerge from the shadows of winter's chill. This gradual increase in sunshine is a welcoming sign for outdoor enthusiasts eager to explore the breathtaking landscapes of the region.
As the seasons transition in San Martin de los Andes, September heralds a subtle shift in daylight duration, offering about 11 hours of sunlight each day. This marks a gradual increase from the shorter days of winter, where daylight hovered around 9 hours for several months. Following September, daylight continues to blossom, reaching 13 hours in October and peaking at 14 hours by December. This trend not only illuminates the landscapes of this picturesque region but also hints at the warmer, more vibrant days to come, as the Southern Hemisphere emerges from winter's embrace into the lively blossoms of spring.
As September unfolds in San Martin de los Andes, the gentle whispers of the wind become a notable feature of the landscape, with an average speed of 2.3 m/s (5 mph). This slight decrease from the breezy August, which enjoyed a peak at 2.5 m/s (6 mph), signals a transitional phase as the region prepares for the more invigorating gusts that will arrive in October. The consistently mild winds of the late winter months, particularly in May and June where speeds also hover around the 6 mph mark, show a trend of moderation leading into spring. Here in September, the calmness of the air serves as a prelude to the energizing change ahead, inviting both residents and visitors to embrace the serene yet lively atmosphere of this picturesque Argentine town.
Weather in San Martin de los Andes varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Martin de los Andes, focusing on differences in temperature, rainfall, humidity, and UV levels.
September's weather in San Martin de los Andes is characterized by a wide range of temperatures, with minimums dropping to -10°C (14°F) and daytime highs reaching up to 18°C (65°F). This month sees an average temperature of 2°C (36°F) alongside significant precipitation of 81 mm (3.2 in) over about 10 days, contributing to high humidity levels of 85%. In contrast, January experiences much warmer conditions, where temperatures range from a low of -4°C (25°F) to a high of 32°C (89°F), resulting in an average temperature of 13°C (55°F). The precipitation in January is considerably lower at 28 mm (1.1 in) over just 4 days and with humidity dropping to 70%. For more detailed information on January weather, you can check San Martin de los Andes weather in January.
September and February present contrasting weather profiles. In September, temperatures range from a chilling minimum of -10°C (14°F) to a mild maximum of 18°C (65°F), with an average of 2°C (36°F). The month sees substantial precipitation, totaling 81 mm (3.2 inches) over about 10 days, contributing to a high humidity level of 85%. In contrast, February enjoys warmer temperatures, with a minimum of -3°C (27°F) and a maximum that can soar up to 31°C (88°F), resulting in a more comfortable average of 13°C (56°F). Precipitation is significantly less in February, amounting to just 28 mm (1.1 inches) over 5 days, along with lower humidity at 69%. For more details, you can check San Martin de los Andes weather in February.
In September, the weather in San Martin de los Andes tends to be cooler with temperatures ranging from a minimum of -10°C (14°F) to a maximum of 18°C (65°F), averaging around 2°C (36°F). The month is quite humid with an 85% humidity level and experiences 81 mm (3.2 in) of precipitation over about 10 days. In contrast, March sees milder and more comfortable conditions, featuring a minimum temperature of -6°C (22°F) and a maximum of 28°C (83°F), with an average temperature of 10°C (51°F). Precipitation decreases significantly to 46 mm (1.8 in) over just 6 days, and humidity is lower at 73%. For a more detailed look at March weather, you can check San Martin de los Andes weather in March.
When comparing the weather in September and April, notable differences emerge in both temperature and precipitation. September typically experiences colder temperatures, with averages around 2°C (36°F), and a maximum of only 18°C (65°F). In contrast, April sees a milder average of 7°C (45°F), with highs reaching up to 23°C (74°F). Precipitation is slightly lower in April, with 64 mm (2.5 in) over 9 days, compared to September's 81 mm (3.2 in) over 10 days. Humidity levels are also comparable, with September at 85% and April slightly lower at 82%. For more details on the weather in April, visit San Martin de los Andes weather in April.
When comparing the weather in September and May, both months show cool temperatures, but May tends to be slightly colder. In September, temperatures range from a minimum of -10°C to a maximum of 18°C, with an average of 2°C, while May has a lower minimum of -16°C and a slightly higher maximum of 20°C, averaging 3°C. Precipitation is also notable in both months, with September receiving 81 mm over 10 days and May seeing 105 mm over 13 days. Humidity levels are similar, with September at 85% and May slightly higher at 88%. For more detailed insights, you can check the San Martin de los Andes weather in May.
In comparing the weather of September and June, we notice some notable differences. September typically sees a wider temperature range, with minimums around -10°C (14°F) and maximums reaching up to 18°C (65°F), whereas June’s temperatures are slightly cooler, with minimums of -11°C (13°F) and maximums only reaching 9°C (48°F). September has an average temperature of 2°C (36°F), contrasting with June's average of 0°C (33°F). Precipitation is also more prevalent in June, with 228 mm (9.0 in) over 19 days compared to September's 81 mm (3.2 in) over 10 days, and the humidity remains high in both months, at 85% for September and 88% for June. For a detailed look at June weather, you can visit San Martin de los Andes weather in June.
When comparing the weather in September to that of July in San Martin de los Andes, a noticeable difference in temperatures and precipitation patterns emerges. September sees milder temperatures, with an average of 2°C (36°F) and a maximum of 18°C (65°F), while July experiences colder conditions, averaging 0°C (32°F) and peaking at 11°C (51°F). However, July has significantly higher precipitation, totaling 198 mm (7.8 in) over 16 days, compared to September's 81 mm (3.2 in) over 10 days. Humidity remains relatively high in both months, with July slightly higher at 90% versus September's 85%. For more detailed information on July's weather, you can visit San Martin de los Andes weather in July.
September's weather shows a slight improvement over August, with an average temperature rising to 2°C (36°F) compared to August's average of 1°C (33°F). The maximum temperature in September reaches 18°C (65°F), a significant increase from August's 12°C (54°F). Precipitation also decreases in September, totaling 81 mm (3.2 in) over 10 days, down from August's 168 mm (6.6 in) across 16 days. Additionally, while humidity remains high at 85% in September, it slightly lessens from August's 90%. For a closer look at August's conditions, visit San Martin de los Andes weather in August.
September and October in San Martin de los Andes exhibit notable differences in their weather patterns. September features a minimum temperature of -10°C (14°F), with an average of 2°C (36°F) and a maximum of 18°C (65°F), while October sees a slight increase, with minimums of -9°C (15°F) and maximums reaching 23°C (73°F). Precipitation also varies, as September receives 81 mm (3.2 in) over 10 days, whereas October has a higher total of 102 mm (4.0 in) across 13 days. Humidity levels are slightly lower in October at 79% compared to September's 85%, making the latter feel a bit more damp. For more detailed insights, check out San Martin de los Andes weather in October.
In comparing the weather of September and November, September tends to be colder, with minimum temperatures reaching as low as -10°C (14°F) and an average of just 2°C (36°F). In contrast, November experiences milder conditions, with minimum temperatures hovering around -7°C (20°F) and an average of 8°C (47°F), making it feel more temperate overall. While September sees more precipitation at 81 mm (3.2 in) over 10 days, November has less with 58 mm (2.3 in) over 9 days, contributing to a drier feel in the air. Additionally, the humidity decreases from 85% in September to 71% in November, offering a more comfortable atmosphere as the seasons transition. For more detailed information, check out San Martin de los Andes weather in November.
September and December present contrasting weather conditions in San Martin de los Andes. In September, temperatures range from a brisk -10°C (14°F) at night to a mild 18°C (65°F) during the day, with an average of 2°C (36°F). The month experiences considerable precipitation, totaling 81 mm (3.2 in) over approximately 10 days, and humidity levels are high at 85%. In contrast, December sees a more temperate climate, with minimum temperatures around -2°C (29°F), average highs of 12°C (53°F), and maximums reaching a warm 28°C (83°F). This month is also drier, with only 48 mm (1.9 in) of rain falling over about 7 days, and lower humidity at 73%. For detailed insights on December weather, you can check San Martin de los Andes weather in December.
September in San Martin de los Andes marks a transition into spring, with temperatures gradually warming up from the chilly depths of winter. While you might still experience some brisk days with a notable chill, the average temperatures begin to rise, promising more pleasant afternoons. This month is also characterized by a higher chance of precipitation, with rain showers occurring on about ten days, adding to the region's lush beauty. Higher humidity levels prevalent during this time can make the air feel cooler, but the scenic landscapes come alive as nature awakens. For a detailed overview of what to expect throughout the year, visit San Martin de los Andes Climate.