October Weather in Rosario, Argentina

Last updated: August 21, 2025

In October, Rosario, Argentina experiences a dynamic climate marked by significant temperature variation, with highs reaching up to 37°C (100°F) and lows dipping to 4°C (40°F). The average temperature hovers around a comfortable 18°C (65°F), providing pleasant conditions for outdoor activities. This month sees a moderate precipitation total of 63 mm (2.5 in), spread across roughly 8 days, contributing to a humidity level of 52% that can make the air feel warmer. Overall, October is a time of transition, offering a mix of warm, sunny days and occasional rainfall, perfect for enjoying the vibrant scenery of Rosario.

October Temperature in Rosario

In October, Rosario, Argentina, experiences a delightful transition as spring unfolds, with temperatures ranging widely and offering a taste of both warmth and coolness. The month kicks off with a minimum temperature of 4°C (40°F), setting the stage for a mild average of 18°C (65°F). As the days progress, the city can experience maximum highs soaring up to 37°C (100°F), making it one of the warmer months of the year. This gradual rise in temperature reflects a trend towards more pleasant conditions, encouraging outdoor activities and vibrant city life. The variability of October’s weather, from cool mornings to hot afternoons, invites both locals and visitors to enjoy Rosario’s rich cultural scene in its comfortable, sun-drenched ambiance.

October Weather in Rosario: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Rosario, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rosario, October typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec777471665853515560647175
Data source: Temperature data for Rosario generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Rosario

In October, Rosario experiences a modest precipitation total of 63 mm (2.5 in), consistent with the drier months that bookend this time of year. Notably, the rain falls over 8 days, indicating a slightly wetter October compared to September, which recorded fewer rainy days with just 58 mm (2.3 in). This trend suggests a gradual shift towards the wet season, as April stands out with the highest rainfall of 131 mm (5.2 in) earlier in the year. As temperatures soften and the landscape begins to bloom, October serves as a transitional month, setting the stage for the more robust rains of late spring. Overall, these patterns highlight a diverse and vibrant climate, essential for thriving agriculture in the region.

October Precipitation Trends in Rosario

The chart displays monthly precipitation patterns in Rosario, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Rosario, October typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec10563931317129293558638169
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Rosario

As October arrives in Rosario, Argentina, the humidity begins to dip to 52%, providing a refreshing shift as the city transitions into spring. This month marks a slight decrease from the higher figures seen in the preceding months, particularly the peak of 82% in May and the sustained levels around 76% during April. The summer months of January and February also display lower humidity levels, averaging 48% and 55%, respectively. Overall, October's humidity reveals a dynamic trend, showcasing the city's shifting weather patterns as it balances between the more humid winter months and the drier summer season ahead, creating a pleasantly temperate climate for residents and visitors alike.

October Average Humidity in Rosario

This chart illustrates the average monthly humidity levels in Rosario, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Rosario is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec48%55%64%76%82%77%62%59%62%52%56%51%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Rosario

In October, Rosario experiences a notable shift as the UV Index peeks at 11, marking it as a month of extreme exposure similar to the peak summer months. With a burn time of just 10 minutes, it’s crucial to take precautions. This aligns with the trend observed from January to March, where the UV Index consistently reaches high levels, emphasizing the need for sun protection. As the months progress from the moderate exposure of May through July, October serves as a reminder that the sun’s intensity can quickly ramp up in the spring. Staying informed about the UV Index, especially during this transition, is essential for safe outdoor activities. For more details, visit Rosario UV Index.

Maximum UV Index Levels in Rosario for October

The chart shows the monthly maximum UV Index (UVI) for Rosario in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Rosario typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141311854468111314
Data source: Rosario October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

October Sunshine in Rosario

In October, Rosario, Argentina, basks in a delightful embrace of sunshine, accumulating 310 hours of radiant light. As the spring season unfolds, the city enjoys a steady rise in daylight hours, significantly surpassing the somewhat subdued April and May months, which only garnered 260 and 231 hours, respectively. This trend of increasing sunshine continues as the year progresses toward summer, with November boasting a remarkable 344 hours. The vibrant October sun not only invigorates the city but also sets the stage for the warm glow of the upcoming months, inviting both locals and visitors to revel in the abundant light and warmth.

Monthly Sunshine Duration in Rosario: October Highlighted

The October sunshine duration represents the total number of hours Rosario experiences direct sunlight during the month of October, excluding cloudy or obstructed periods. This chart compares the sunshine duration of October with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec294h324h315h260h231h222h227h281h273h310h344h378h
Data source: Rosario October Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Rosario During October

In October, Rosario, Argentina enjoys a notable 73% chance of sunny weather, making it one of the more promising months for clear skies. This month stands out with a significant uptick in sunshine, especially when compared to the previous months. Following the typically cooler winter, where sunny days dipped to around 47%, October signals a transition with warmth and brightness returning to the region. This trend continues into late spring, as people can expect an enjoyable mix of sunshine leading into November and December. Overall, October marks a delightful time for outdoor activities, offering ample opportunities to bask in the sun as spring fully blossoms.

Percentage of Sunny Days in October in Rosario

The chart illustrates the percentage of sunny days in Rosario throughout the year, with October highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Rosario experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec61%66%47%68%60%47%74%78%50%73%61%74%
Data source: Rosario October chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Rosario in October

In Rosario, Argentina, October ushers in a refreshing shift in daylight hours, offering 12 hours of daylight. This month marks a transition as the days begin to lengthen again after the shorter spans of winter. Following the trend observed over the previous months, daylight gradually increases from the 9 hours of June to a robust 14 hours by December. As spring takes hold, October stands as a delightful midpoint, combining the comfortable warmth of the season with the brightening sky, inviting residents and visitors alike to embrace the outdoors and enjoy the vibrant life that blooms in this Argentine city. The gradual extension of daylight not only enhances the beauty of the landscape but also heralds the approach of a lively summer, setting the stage for longer, sun-filled days ahead.

Average Daylight Hours in Rosario for October

The chart illustrates the variation in daylight duration in Rosario throughout the year, with October highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 1m13h 14m12h 14m11h 13m10h 23m9h 59m10h 12m10h 56m11h 54m12h 54m13h 49m14h 16m
Data source: Rosario daylight hours, calculated by summing the hours between sunrise and sunset for each day.

October Winds in Rosario

As October sweeps through Rosario, Argentina, the average wind speed settles at a gentle 3.2 m/s (7 mph), aligning with the mild breezes typical of the month. Following a notable uptick in September, where winds reached 3.8 m/s (9 mph), October's winds reflect a slight dip yet maintain an inviting calm that heralds the transition into spring. This consistent wind pattern, hovering steadily around the 3 m/s range for much of the year, showcases the region's temperate climate, allowing residents and visitors alike to enjoy the refreshing air and vibrant autumn scenery. As the year progresses toward November, winds are expected to pick up slightly, reaching 3.5 m/s (8 mph), continuing the cycle of change that beautifully characterizes Rosario's weather.

Average October Wind Speed in Rosario

The chart displays monthly wind speed patterns in Rosario, with values for each month shown alongside October's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how October's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.22.82.82.93.13.13.33.03.83.2 m/s3.53.0
Data source: Rosario October wind data, generated using information from the Copernicus Climate Change Service.

How October Weather in Rosario Compares to Other Months

Weather in Rosario varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Rosario, focusing on differences in temperature, rainfall, humidity, and UV levels.

In October, the weather features a cooler temperature range with a minimum of 4°C (40°F) and a maximum of 37°C (100°F), averaging around 18°C (65°F). The month experiences about 63 mm (2.5 in) of precipitation over approximately 8 days, accompanied by a humidity level of 52%. In contrast, January brings warmer temperatures, with a minimum of 11°C (53°F) and a maximum reaching 41°C (105°F), resulting in a higher average of 25°C (77°F). The month also sees increased rainfall, totaling 105 mm (4.1 in) over 7 days, along with slightly lower humidity at 48%. For more detailed information, you can check Rosario weather in January.

October and February offer distinct weather experiences, with October featuring a temperature range from a cool 4°C (40°F) to a warm 37°C (100°F) and an average of 18°C (65°F). In contrast, February presents slightly milder temperatures, with a minimum of 9°C (48°F), an average of 24°C (75°F), and a maximum of 36°C (98°F). Despite both months receiving similar precipitation levels of 63 mm (2.5 in) over approximately a week, February is characterized by slightly higher humidity at 55%, compared to October's 52%. For more details on February's climate, check out Rosario weather in February.

When comparing the weather in October and March, October generally presents milder temperatures, with a minimum of 4°C (40°F) and an average high of 37°C (100°F). In contrast, March starts off warmer, with temperatures ranging from a minimum of 7°C (44°F) to an average maximum of 35°C (95°F). Precipitation levels are higher in March, totaling 93 mm (3.6 in) over 6 days, compared to October's 63 mm (2.5 in) over 8 days. Additionally, March tends to be more humid, with a humidity level of 64% compared to October's 52%. For more detailed insights, check out Rosario weather in March.

October and April present distinct weather patterns, with October offering a wider temperature range, from a cool 4°C (40°F) to a hot 37°C (100°F), averaging around 18°C (65°F). In contrast, April tends to be milder, with temperatures fluctuating between a minimum of 3°C (37°F) and a maximum of 33°C (91°F), averaging slightly higher at 19°C (66°F). Precipitation is notably heavier in April, totaling 131 mm (5.2 in) over 7 days, compared to October’s 63 mm (2.5 in) across 8 days. Additionally, the humidity levels are higher in April at 76%, while October maintains a more comfortable 52%. For more details on April weather, check out Rosario weather in April.

October weather features a wider temperature range, with minimums around 4°C and maximums soaring up to 37°C, offering an average of 18°C. In contrast, May is cooler, with temperatures ranging from a minimum of -1°C to a maximum of 28°C, averaging at 14°C. While October has 63 mm of precipitation over about 8 days, May sees slightly more rainfall at 71 mm but with fewer rainy days (6). Additionally, May has significantly higher humidity levels at 82%, compared to October's 52%. For a detailed look at May conditions, check out Rosario weather in May.

October and June showcase distinct weather patterns. In October, temperatures vary significantly, ranging from a chilly 4°C (40°F) at night to a scorching max of 37°C (100°F) during the day, with an average of 18°C (65°F). Precipitation is relatively higher, with an average of 63 mm (2.5 in) over approximately 8 days and a humidity level of 52%. In contrast, June offers cooler temperatures, with a minimum of -2°C (28°F), an average of 12°C (53°F), and a peak of 26°C (79°F). Additionally, June experiences less rainfall, at 29 mm (1.1 in) over just 3 days, but has higher humidity at 77%. For more specific details regarding June weather in Rosario, you can check Rosario weather in June.

October and July present distinct weather patterns, showcasing the transition from the cooler depths of winter to the warmth of spring. In October, temperatures range from a minimum of 4°C (40°F) to a scorching maximum of 37°C (100°F), with an average of 18°C (65°F). The month experiences about 63 mm (2.5 in) of precipitation over approximately 8 days and a moderate humidity level of 52%.

In contrast, July features milder temperatures, with a minimum of -4°C (24°F), an average of 11°C (52°F), and a maximum of 27°C (80°F). Precipitation is lighter at 29 mm (1.2 in) over around 6 days, accompanied by slightly higher humidity at 62%. For a more detailed look at the weather in July, you can visit Rosario weather in July. Overall, October is characterized by warmer temperatures and increased rainfall, while July remains cooler and drier.

When comparing the weather in October to that of August, notable differences emerge. October sees a broader temperature range with a minimum of 4°C (40°F), an average of 18°C (65°F), and a maximum of 37°C (100°F), indicating warmer days overall. In contrast, August has a cooler climate, starting with a minimum of -2°C (29°F) and averaging 13°C (55°F) with a peak of 31°C (88°F). Rainfall also varies, with October experiencing more precipitation at 63 mm (2.5 in) over 8 days compared to August's 35 mm (1.4 in) across just 4 days. Additionally, humidity levels are slightly higher in August at 59%, whereas October averages 52%. This contrast highlights how October tends to be warmer and wetter than August, making it an interesting month for weather patterns. For more detailed insights, check out Rosario weather in August.

In comparing the weather patterns of September and October, October showcases a broader temperature range, with minimums at 4°C (40°F) and maximums soaring to 37°C (100°F), in contrast to September's cooler minimum of -1°C (31°F) and maximum of 33°C (92°F). The average temperature in October is slightly higher at 18°C (65°F) compared to September's 16°C (60°F). Both months experience comparable precipitation levels, with October receiving 63 mm (2.5 in) over 8 days, while September has 58 mm (2.3 in) across 6 days. It's also notable that October has slightly lower humidity at 52% compared to September's 62%. For more information on September's weather, visit Rosario weather in September.

October typically experiences a wider temperature range, with minimums around 4°C (40°F) and maximums reaching up to 37°C (100°F), while November shows a slightly warmer trend, with minimums of 7°C (45°F) and an average max of 37°C (98°F). The average temperature in November is higher at 22°C (71°F), compared to October's average of 18°C (65°F). Precipitation also increases in November, with 81 mm (3.2 in) over 6 days, compared to October's 63 mm (2.5 in) over 8 days, and humidity rises slightly to 56% in November from 52% in October. For more details, you can check Rosario weather in November.

In October, temperatures in Rosario can range from a chilly 4°C (40°F) at night to a warm average of 18°C (65°F), with maximum daytime highs reaching up to 37°C (100°F). This month typically experiences around 63 mm (2.5 in) of precipitation over about 8 days, with humidity levels at 52%. In contrast, December brings a slightly warmer climate, with nighttime lows of 10°C (50°F) and an average temperature of 24°C (75°F), while still hitting a maximum of 38°C (100°F). Precipitation increases slightly to 69 mm (2.7 in), again over 8 days, with humidity remaining fairly stable at 51%. For those interested in the specifics of December's weather, you can check out Rosario weather in December.

Compare Rosario's Climate with Cities Worldwide

Conclusion: What to Expect From October Weather in Rosario

As October unfolds in Rosario, the weather presents a vibrant transformation, marking a distinct departure from the cooler months preceding it. With average temperatures noticeably rising, days can become quite warm, occasionally peaking at a sweltering 37°C (100°F). This month enjoys a balanced blend of warmth and freshness, with pleasant mornings that can dip to a cool 4°C (40°F). Unlike the wetter winter months, October sees a moderate rainfall of just 63 mm (2.5 in) spread over a few days, making it a relatively dry month with a comfortable humidity level of 52%. This dynamic climate invites both locals and visitors to revel in the beauty of spring in Rosario. For a more in-depth analysis of year-round conditions, check out Rosario Climate.