September Weather in Ayacucho, Argentina

Last updated: August 21, 2025

In September, Ayacucho, Argentina, experiences a diverse range of weather conditions. The maximum temperature reaches a comfortable 27°C (81°F), while the average temperature settles around a brisk 11°C (53°F). Nighttime temperatures can dip to a chilly minimum of -3°C (27°F), highlighting the region’s sharp temperature fluctuations. During this month, Ayacucho receives 74 mm (2.9 in) of precipitation, typically spread across about 6 days, contributing to a relatively humid environment with a humidity level of 76%. This combination of warm days and cool nights, along with occasional rain, makes September a unique time to appreciate the local climate.

September Temperature in Ayacucho

In September, Ayacucho begins to shake off the chill of winter, showcasing a gradual transition towards warmer days. The minimum temperature hovers around -3°C (27°F), while the average rises to a comfortable 11°C (53°F), peaking at a pleasant 27°C (81°F) during the day. This month marks a significant shift from the brisk temperatures of July and August, indicating the onset of spring. As nature awakens, visitors will find September to be a delightful time to explore the blossoming landscapes, with mild conditions that invite outdoor adventures without the sweltering heat of the coming summer months.

September Weather in Ayacucho: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ayacucho, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ayacucho, September 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).
JanFebMarAprMayJunJulAugSepOctNovDec716965605348464952576368
Data source: Temperature data for Ayacucho 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.

September Precipitation in Ayacucho

In September, Ayacucho sees a notable shift in precipitation patterns, contributing to the region's vibrant atmosphere as it transitions towards spring. The month recorded 74 mm (2.9 in) of rain over 6 days, which marks a decrease from the heavier rains observed in April and a slight increase compared to the drier conditions of August. This moderate rainfall is a precursor to October's similar levels, creating a sense of continuity in the seasonal rhythm. The precipitation in September supports the burgeoning growth of flora, rejuvenating the landscape and setting the stage for the warmer, more life-filled months ahead. Overall, the data illustrates that as winter fades, September brings a balanced blend of moisture, vital for nurturing the beauty of Ayacucho's natural surroundings.

September Precipitation Trends in Ayacucho

The chart displays monthly precipitation patterns in Ayacucho, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Ayacucho, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec5882821094751543374757067
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ayacucho

In September, Ayacucho experiences a noticeable dip in humidity as it settles at 76%, following the higher levels seen in the spring months. This decrease marks a transition from the peak humidity of May at 86%, reflecting the region's gradual shift towards drier conditions. However, September remains relatively humid compared to the months ahead, such as October and November, which showcase a steady downward trend, emphasizing the journey toward the drier summer months. As nature begins to shift, residents and visitors alike can find comfort in the still-moderate moisture levels, making September a unique blend of lingering spring warmth and the anticipation of fall.

September Average Humidity in Ayacucho

This chart illustrates the average monthly humidity levels in Ayacucho, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Ayacucho is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%70%73%83%86%81%73%69%76%69%66%61%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ayacucho

In September, Ayacucho, Argentina experiences a UV Index of 7, categorizing the sun's rays as high and resulting in a burn time of approximately 25 minutes for unprotected skin. This marks a notable increase from the milder months of June to August, when the index hovered between 3 and 5, indicating a transition towards more intense sunlight. As the seasons shift toward summer, September serves as a reminder for residents and visitors alike to stay vigilant about sun protection—especially as the UV Index prepares to climb higher in the coming months. For detailed insights on Ayacucho's UV levels throughout the year, explore Ayacucho UV Index.

Maximum UV Index Levels in Ayacucho for September

The chart shows the monthly maximum UV Index (UVI) for Ayacucho in September, 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 September, the maximum UV index in Ayacucho typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141210743357101314
Data source: Ayacucho September 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.

September Sunshine in Ayacucho

As September arrives in Ayacucho, Argentina, the sun shines with a welcoming warmth, delivering 249 hours of sunlight, a slight dip from the previous month but still significantly brighter than the winter months. This transition marks the tail end of the chilly season, with sunshine steadily increasing as the year progresses. After the vibrant bursts of summer in January and February, where sunlight peaked at 297 and 315 hours respectively, the region begins to bask in longer days again, especially with October promising to shine even brighter with 306 hours. The consistent rise from the gray winter months through to the brilliant late spring suggests a renewal and vitality that captivates both locals and visitors alike, making September a delightful interlude in a symphony of Argentine seasons.

Monthly Sunshine Duration in Ayacucho: September Highlighted

The September sunshine duration represents the total number of hours Ayacucho experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec297h315h299h242h225h190h202h251h249h306h332h375h
Data source: Ayacucho September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ayacucho During September

In Ayacucho, Argentina, the likelihood of sunny weather shows distinct trends throughout the year. With the highest chances of sunshine in October at 64%, the months preceding it, including April and August, maintain relatively favorable conditions, hovering just above the 50% mark. However, as September rolls in, the probability of clear skies dips to 42%, marking a noticeable decrease as the region transitions from the winter months. This shift indicates a trend where the winter season's cloud cover lingers into early spring, only to give way to brighter days in the latter months of the year. If you're planning a visit, keep in mind that September is one of the less reliable months for sunshine, but brighter days are just around the corner.

Percentage of Sunny Days in September in Ayacucho

The chart illustrates the percentage of sunny days in Ayacucho throughout the year, with September 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 Ayacucho experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec57%53%50%59%49%36%52%53%42%64%52%54%
Data source: Ayacucho September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ayacucho in September

As September arrives in Ayacucho, Argentina, daylight begins its gradual resurgence, offering 11 hours of sunlight—a welcomed increase from the shorter days of winter. Following the shorter daylight of June and July, which each provided only 9 hours, September marks a turning point that signals the onset of spring. As the days grow longer, a sense of rejuvenation fills the air, hinting at the vibrant growth to come in the months ahead. This increase in sunlight continues into October, reaching 13 hours, before peaking in December with 14 hours. The rhythmic ebb and flow of daylight throughout the year not only shapes the landscape but also enhances the local charm, encouraging outdoor activities and a deeper connection to nature as the seasons transition.

Average Daylight Hours in Ayacucho for September

The chart illustrates the variation in daylight duration in Ayacucho throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 21m13h 25m12h 15m11h 4m10h 6m9h 37m9h 53m10h 44m11h 52m13h 3m14h 6m14h 39m
Data source: Ayacucho daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Ayacucho

As September arrives in Ayacucho, Argentina, the winds pick up a refreshing energy, averaging 4.2 m/s (9 mph), mirroring the breezy conditions of July. This invigorating current contrasts with the calmer gusts experienced in the preceding months, establishing September as part of a transitional phase that heralds the approach of spring. The consistent wind pattern not only enhances the region's natural beauty but also fosters an invigorating atmosphere, inviting locals and visitors alike to embrace outdoor activities. Interestingly, this lively September breeze sets the stage for an increase in wind speed that continues into November, suggesting a trend of more dynamic weather that encapsulates the essence of the changing seasons in Ayacucho.

Average September Wind Speed in Ayacucho

The chart displays monthly wind speed patterns in Ayacucho, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.14.03.53.64.13.84.23.44.2 m/s3.74.33.4
Data source: Ayacucho September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Ayacucho Compares to Other Months

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

In September, temperatures in Ayacucho range from a chilly -3°C (27°F) at night to a warm 27°C (81°F) during the day, with an average temperature of 11°C (53°F). This month sees about 74 mm (2.9 in) of precipitation over six days, alongside a relatively high humidity level of 76%. In contrast, January offers much warmer weather, with nighttime lows of 6°C (42°F) and daytime highs soaring to 40°C (104°F), averaging around 22°C (71°F). The precipitation is lower at 58 mm (2.3 in) across seven days, and the humidity drops to 59%. These contrasting conditions highlight the shift from the cool, damp early spring of September to the hot, dry summer of January. For more details on January weather, visit Ayacucho weather in January.

September and February exhibit notable differences in weather patterns. In September, temperatures range from a chilly minimum of -3°C (27°F) to a comfortable average of 11°C (53°F), peaking at a warm 27°C (81°F). Precipitation during this month totals 74 mm (2.9 in) over about 6 days, accompanied by a humidity level of 76%. In contrast, February experiences a much warmer climate, with temperatures starting at a minimum of 5°C (42°F) and soaring to an average of 21°C (69°F) and a maximum of 35°C (94°F). Although it has slightly higher precipitation at 82 mm (3.2 in) over 7 days, the humidity is lower at 70%. Thus, while September brings cooler, more variable weather, February offers warmer and more stable conditions. For more details, visit Ayacucho weather in February.

When comparing the weather in September and March, notable differences emerge in temperature and humidity. September tends to be cooler, with minimum temperatures dipping to -3°C (27°F) and an average of 11°C (53°F), while March enjoys milder conditions, starting at a minimum of 4°C (39°F) and averaging 18°C (65°F). Maximum temperatures also rise significantly in March, peaking at 32°C (90°F) compared to September's 27°C (81°F). In terms of precipitation, March sees slightly higher rainfall at 82 mm (3.2 in) over 9 days, as opposed to September's 74 mm (2.9 in) over 6 days. Despite this, humidity levels are relatively close, with September at 76% and March at 72%. For more detailed insights about March’s weather, check out Ayacucho weather in March.

When comparing the weather in September and April, significant differences emerge. September experiences a cooler temperature range with a minimum of -3°C (27°F) and an average of 11°C (53°F), peaking at 27°C (81°F). In contrast, April offers milder conditions, with temperatures starting at a minimum of 3°C (38°F), averaging 16°C (61°F), and reaching a maximum of 28°C (83°F). Additionally, April sees more precipitation at 109 mm (4.3 in) over 7 days, compared to September's 74 mm (2.9 in) across 6 days, coupled with slightly higher humidity levels in April at 82%, versus 76% in September. For a detailed look at April weather specifics, check out Ayacucho weather in April.

In comparing September and May weather, both months share a similar average temperature of 11°C (53°F), but September experiences slightly higher maximum temperatures, reaching up to 27°C (81°F) compared to May's max of 26°C (79°F). September also tends to be drier, with 74 mm (2.9 in) of precipitation over 6 days, while May sees 47 mm (1.8 in) within the same number of days. Humidity levels are higher in May at 86%, surpassing September's 76%. For a more detailed look at May conditions, you can visit Ayacucho weather in May.

In September, the temperature range is notably broader than in June, with minimums dropping to -3°C (27°F) and maximums reaching up to 27°C (81°F), resulting in an average of 11°C (53°F). In contrast, June's temperatures are cooler overall, with a minimum of -3°C (27°F), an average of 9°C (49°F), and a maximum of 21°C (70°F). September also experiences more precipitation, with 74 mm (2.9 in) falling over 6 days, compared to 51 mm (2.0 in) over 5 days in June. Interestingly, the humidity levels are quite close, with September at 76% and June slightly higher at 81%. For more details on the June weather specifically, you can refer to Ayacucho weather in June.

When comparing the weather in September and July, September generally experiences milder temperatures with average highs reaching 27°C (81°F), while July sees a cooler maximum of 21°C (69°F). Notably, September has a higher average temperature of 11°C (53°F) compared to July's 8°C (47°F). Precipitation is slightly more prevalent in September, with 74 mm (2.9 in) over six days, compared to July’s 54 mm (2.1 in) over seven days. Humidity levels are also slightly higher in September at 76%, compared to 73% in July. For more detailed insights, you can refer to Ayacucho weather in July.

In comparing the weather between September and August, September offers a slightly broader temperature range, with minimums hitting -3°C (27°F) and maximums reaching 27°C (81°F), leading to an average temperature of 11°C (53°F). This is a notable increase from August, where temperatures ranged from a minimum of -3°C (26°F) to a maximum of 25°C (76°F) and an average of 9°C (49°F). September also sees more precipitation, with 74 mm (2.9 in) over six days, compared to August's 33 mm (1.3 in) over five days. Additionally, humidity levels are higher in September at 76%, compared to 69% in August. For more detailed information about August weather, you can check Ayacucho weather in August.

September and October present an intriguing transition in weather patterns. September experiences a temperature range from a chilly minimum of -3°C (27°F) to a comfortable average of 11°C (53°F), peaking at 27°C (81°F), combined with 74 mm (2.9 in) of rainfall over 6 days and a humidity level of 76%. In contrast, October sees slightly milder temperatures with a minimum of -1°C (31°F), an average of 14°C (57°F), and a maximum that reaches a significant 33°C (92°F). October's precipitation is comparable, at 75 mm (3.0 in) across 7 days, but the humidity dips to 69%. For more insights into October’s climate, visit Ayacucho weather in October.

September weather tends to be cooler, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 27°C (81°F) and an average of 11°C (53°F). In contrast, November experiences warmer conditions, with temperatures starting at a minimum of 3°C (38°F) and reaching up to 33°C (92°F), averaging 17°C (63°F). While both months see similar levels of precipitation—September with 74 mm (2.9 in) over 6 days and November with 70 mm (2.8 in) over 8 days—November's humidity is notably lower at 66%, compared to September’s 76%. For more detailed insights into the weather patterns, visit Ayacucho weather in November.

In September, the weather presents a broader range of temperatures with a minimum of -3°C (27°F) and an average of 11°C (53°F), reaching a maximum of 27°C (81°F). The month experiences about 74 mm (2.9 in) of precipitation over 6 days, contributing to a relatively high humidity level of 76%. In contrast, December brings warmer temperatures, with a minimum of 4°C (39°F) and an average of 20°C (68°F), peaking at a hot 36°C (97°F). This month sees slightly less precipitation at 67 mm (2.6 in) over 9 days, and lower humidity at 61%. For more information on December weather specifics, visit Ayacucho weather in December.

Compare Ayacucho's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Ayacucho

September in Ayacucho marks a transition into spring, bringing a refreshing change to the weather compared to the colder winter months. With temperatures rising to comfortable highs, the chill of winter gives way to warmer days, albeit with a significant drop at night. The humidity remains relatively high, contributing to the vibrant greenery that emerges during this time. While September does see some rainfall, it is less frequent than the cloudburst periods of summer, making it an ideal month for outdoor activities. For those wanting to explore more about the captivating climate of Ayacucho, visit the detailed insights at Ayacucho Climate.