Last updated: August 21, 2025
Experience the vibrant September weather of Santa Rosa, Argentina, where temperatures showcase a dynamic range with maximums soaring up to 32°C (91°F) and dipping to a brisk -5°C (23°F). The month averages a comfortable 13°C (56°F), perfect for outdoor activities. Expect about 50 mm (2.0 in) of precipitation over 5 days, contributing to the region's lush scenery. With an average humidity of 59%, the climate is pleasantly mild, making September an ideal time to explore the beauty of Santa Rosa.
In September, Santa Rosa, Argentina, marks a transitional phase as the region shifts from winter's chill toward the warmth of spring. With temperatures ranging from a brisk -5°C (23°F) at night to a balmy 32°C (91°F) during the day, it’s a month of notable contrast. The average temperature climbs to 13°C (56°F), hinting at the approach of sunnier days. As the month progresses, you can feel the warmth gradually enveloping the city, making it a time for outdoor activities and enjoyment of the blossoming landscapes. This gentle rise in temperatures not only changes the ambiance but also signals the exciting beginning of spring in the heart of Argentina.
In September, Santa Rosa experiences a notable shift in precipitation, receiving 50 mm (2.0 in) of rain over 5 days. This aligns with the city's gradual transition from the drier winter months, where July and August record minimal rainfall, to the more variable conditions of spring. The precipitation pattern suggests a revitalization of the landscape, setting the stage for the lush growth typical in the following months. As the city moves into October, it seems poised for a similar rainfall total, maintaining the region's moderate climate that supports both agriculture and natural vegetation. This rhythmic cycle indicates a promising start to the warmer season, inviting both residents and nature to flourish.
In September, humidity levels in Santa Rosa, Argentina settle at a moderate 59%, marking a transition from the more humid winter months. This slight decrease follows a peak of 72% in May and reflects a gradual easing of moisture in the air as spring approaches. As we move toward October, humidity dips further to 50%, showcasing a consistent trend of decreasing humidity following the mid-year highs. September’s humidity thus acts as a bridge between the tail end of winter and the onset of the warmer months, contributing to a pleasant climate that invigorates both the landscape and the locals.
In September, Santa Rosa, Argentina experiences a notable shift in UV Index as the seasons change. With a UV Index of 7, the exposure category moves to high, suggesting it's time to pay extra attention to sun safety. The burn time drops to 25 minutes, indicating that even moderate sun exposure can lead to skin damage. This month's UV levels signal an important trend: as winter fades, the potential for skin damage increases, aligning with the patterns observed from the preceding months. Staying vigilant with sun protection is key, especially as we transition into the warmer months. For more insights on UV levels throughout the year, visit Santa Rosa UV Index.
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As September unfolds in Santa Rosa, Argentina, the lingering warmth of late winter gives way to the promise of spring, with 278 hours of sunshine brightening the days. While this marks a slight dip from the sun-drenched peak of summer months like January and February, the overall trend indicates a gradual return to longer days and vibrant outdoor living. September's sunny disposition follows a pattern established by the preceding months, where sunshine hours typically hover around the mid-200s, before drastically surging into the 349 hours of November. With the sun beginning to reassert its dominance, Santa Rosa prepares to bask in the increasing radiance, setting the stage for the lively seasons ahead.
In September, the likelihood of sunny weather in Santa Rosa, Argentina, stands at 57%. As the seasons transition from winter to spring, this marks a slight dip compared to the sunnier months of late winter and early autumn. While January and February boast higher chances of sun, September begins to hint at the more favorable weather ahead, aligning closely with the averages seen in the cooler months of May and June. This moderate likelihood suggests that while sunshine is not guaranteed, there are still ample opportunities for clear skies as the region gradually warms up. With October promising a more robust 74% chance of sunshine, September serves as a gentle introduction to the brighter days that lie ahead.
As September unfolds in Santa Rosa, Argentina, daylight begins to shift, offering approximately 11 hours of sunlight each day. This marks a subtle recovery from the deepening shadows of winter, with daylight gradually increasing after the shortest days of June and July, which both saw only 9 hours. Following this transitional month, October and November promise even more light, with day length climbing to 13 and then 14 hours, respectively. This pattern reflects a clear seasonal rhythm, as the days grow longer and brighter, heralding the arrival of spring and inviting outdoor activities in this vibrant region.
As September arrives in Santa Rosa, Argentina, the winds pick up pace, mirroring the transition of seasons. With an average wind speed of 3.7 m/s (8 mph), September experiences a refreshing breeze that invigorates the landscape. This marks a notable increase from the softer winds of the previous months, particularly as August and May logged similar speeds of 3.1 m/s (7 mph) and 2.9 m/s (7 mph), respectively. The consistent winds during the winter months, averaging around 3.0 m/s (7 mph), give way to a gentle resurgence in air movement, heralding the onset of spring. Notably, as September's winds echo the lightness of the forthcoming season, they pave the way for the upcoming warmth of October and November, where the wind speeds stabilize around 3.5 m/s and 3.4 m/s. This rhythm of the wind not only shapes the weather but also enhances the charm of Santa Rosa in transition, promising vibrant days ahead.
Weather in Santa Rosa varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santa Rosa, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January offer contrasting weather experiences. In September, temperatures range from a chilly minimum of -5°C (23°F) to a warm maximum of 32°C (91°F), with an average temperature of 13°C (56°F). This month sees about 50 mm (2.0 in) of precipitation over roughly 5 days, accompanied by a humidity level of 59%. In stark contrast, January boasts much warmer temperatures, with a range from a minimum of 8°C (48°F) to a scorching maximum of 40°C (104°F) and an average of 24°C (76°F). Precipitation is lighter at 36 mm (1.4 in), occurring over 6 days, and the humidity drops to 44%. These differences make September a month of transition, while January reaches the peak of summer heat. For more details on January weather, you can visit Santa Rosa weather in January.
September and February exhibit contrasting weather conditions despite having similar levels of precipitation and frequency of rainy days. In September, temperatures range from a chilly minimum of -5°C (23°F) to a comfortable average of 13°C (56°F), with highs that can reach up to 32°C (91°F). The humidity sits at 59%, lending a brisk feel to the early spring atmosphere. In contrast, February experiences warmer conditions, with minimum temperatures at 6°C (44°F) and an average of 23°C (73°F), peaking at a sweltering 37°C (99°F). The humidity in February is lower at 49%, making the heat feel less oppressive. For a detailed overview of February weather in this region, you can check Santa Rosa weather in February.
September and March present distinct weather patterns. In September, temperatures range from a chilly minimum of -5°C (23°F) to a warm maximum of 32°C (91°F), with an average of 13°C (56°F). The month typically sees about 50 mm (2.0 in) of precipitation over 5 days, maintaining a humidity level of 59%. In contrast, March offers a more moderate climate, with temperatures varying from a minimum of 4°C (39°F) to a peak of 36°C (96°F) and an average of 20°C (68°F). It experiences higher rainfall, totaling around 70 mm (2.7 in) over 7 days, and has a slightly increased humidity of 60%. The differences highlight how March tends to be warmer and wetter than September. For more details, you can check Santa Rosa weather in March.
In comparing the weather between September and April, we see notable differences in temperature and precipitation. September experiences a wider temperature range, with minimums dropping to -5°C (23°F) and maximums reaching up to 32°C (91°F), while April's temperatures are milder, ranging from a minimum of 1°C (33°F) to a maximum of 31°C (89°F). Additionally, April tends to be wetter, with total precipitation of 84 mm (3.3 in) over 6 days, compared to September's 50 mm (2.0 in) over 5 days. Humidity levels also rise in April, averaging 71%, compared to September's 59%. For more insights about April's weather, you can check Santa Rosa weather in April.
September and May exhibit fairly similar weather patterns, with both months experiencing a range of temperatures and comparable precipitation levels. In September, temperatures can drop to a minimum of -5°C (23°F) with an average of 13°C (56°F) and a maximum of 32°C (91°F). In contrast, May sees slightly milder conditions, with a minimum of -3°C (28°F), an average of 12°C (54°F), and a maximum of 29°C (84°F). While both months receive around 44-50 mm of precipitation across approximately 5 days, May tends to have higher humidity levels at 72% compared to September's 59%. For more specific details on May's climate, you can check out Santa Rosa weather in May.
In comparing the weather of September and June, September generally offers a broader temperature range, with minimums dipping to -5°C (23°F) and maximums reaching up to 32°C (91°F), resulting in an average temperature of 13°C (56°F). Conversely, June features a smaller temperature range, with a minimum of -4°C (25°F) and a maximum of 22°C (72°F), leading to an average of only 8°C (47°F). Additionally, September experiences more precipitation, totaling 50 mm (2.0 in) over about 5 days, while June has less precipitation at 24 mm (1.0 in) over approximately 3 days. Humidity levels are slightly higher in June at 65%, compared to September’s 59%. For more details on the weather specifics in June, you can visit Santa Rosa weather in June.
In comparing the weather of September and July, September features a wider range of temperatures, with a minimum of -5°C (23°F), an average of 13°C (56°F), and a maximum of 32°C (91°F), while July has a more modest temperature range, with a minimum of -4°C (24°F), an average of 8°C (46°F), and a maximum of 23°C (73°F). Additionally, September receives more precipitation, totaling 50 mm (2.0 in) over 5 days, compared to July's 18 mm (0.7 in) across 4 days. Humidity levels are slightly lower in September at 59%, compared to 61% in July, making the latter feel a bit more humid. For more insights, you can check Santa Rosa weather in July.
September experienced slightly cooler temperatures than August, with a minimum of -5°C (23°F) and a maximum of 32°C (91°F), compared to August's minimum of -4°C (24°F) and a maximum of 29°C (84°F). The average temperature in September was notably higher at 13°C (56°F), while August averaged 10°C (50°F). Additionally, September saw increased precipitation, totaling 50 mm (2.0 in) over 5 days, whereas August recorded just 11 mm (0.4 in) across only 2 days. Humidity levels were also marginally higher in September at 59%, compared to August's 56%. For a closer look at the weather specifics for August, check out Santa Rosa weather in August.
In September, temperatures in Santa Rosa range from a minimum of -5°C (23°F) to a maximum of 32°C (91°F), with an average of 13°C (56°F). The month experiences around 50 mm (2.0 in) of precipitation over 5 days and has a humidity level of 59%. Conversely, October sees a slight increase in both the minimum and average temperatures, with lows of 0°C (33°F) and highs reaching up to 35°C (96°F), averaging 16°C (61°F). Precipitation decreases to 44 mm (1.7 in), yet it occurs over a greater number of days, totaling 7. Notably, the humidity drops to 50%. For more detailed insights, check out Santa Rosa weather in October.
In comparing the weather of September and November, we find notable differences in temperature and precipitation. September experiences a broader temperature range, with lows of -5°C (23°F) and highs reaching up to 32°C (91°F), while November's temperatures are milder, ranging from a minimum of 5°C (41°F) to a maximum of 36°C (97°F). Precipitation is also more pronounced in November, with an increase to 87 mm (3.4 in) over 9 days compared to September's 50 mm (2.0 in) over 5 days. Additionally, humidity levels drop from 59% in September to a more comfortable 45% in November. For more detailed insights into November's weather, you can check Santa Rosa weather in November.
September and December weather in Santa Rosa exhibit notable differences. In September, temperatures range from a minimum of -5°C (23°F) to a maximum of 32°C (91°F), with an average of 13°C (56°F). The month sees about 50 mm (2.0 in) of precipitation over 5 days, with a humidity level of 59%. In contrast, December presents warmer conditions with a minimum of 8°C (47°F) and a peak of 38°C (101°F), averaging at a comfortable 23°C (73°F). This month experiences slightly higher precipitation at 69 mm (2.7 in) across 8 days, but with a lower humidity of 40%. For more detailed insights, you can explore Santa Rosa weather in December.
As summer makes its gradual exit in September, Santa Rosa experiences a delightful transition marked by milder temperatures and the onset of spring blooms. With a pleasant average of around 13°C and relatively cool nights, this month provides a refreshing contrast to the sweltering heat of summer. Though September sees some rainfall, with approximately 50 mm across about five days, the 59% humidity ensures the air remains comfortable rather than overly sticky. This unique blend of mild days and refreshing nights makes September a lovely time to explore the natural beauty of the region. For a comprehensive look at the weather throughout the year, visit Santa Rosa Climate.