Last updated: August 27, 2025
In Ayacucho, Peru, September showcases a mild climate, with maximum temperatures reaching up to 19°C (67°F) and an average of 10°C (49°F). As the month progresses, nighttime can bring a crisp chill, with minimum temperatures dipping to 0°C (32°F). Rainfall is a notable characteristic, with 43 mm (1.7 in) accumulated over 14 days, contributing to a humidity level of 52% that adds to the region's refreshing atmosphere. Visitors can expect a blend of sunny days and occasional showers, making it a dynamic time to experience the unique beauty of Ayacucho.
In September, Ayacucho, Peru, begins to transition towards milder temperatures after a notably chilly winter. The minimum temperature rises to 0°C (32°F), reflecting a gradual warming trend, while the average settles around 10°C (49°F). With a maximum of 19°C (67°F), the days bring a refreshing warmth, perfect for exploring the region's rich cultural heritage or enjoying its stunning landscapes. This shift marks a notable increase compared to the previous months, indicating that the colder, more extreme conditions are giving way to a more temperate and inviting climate, paving the way for the vibrant spring ahead.
In September, Ayacucho experiences a notable transition in precipitation, as it marks the beginning of the rainy season. With 43 mm (1.7 in) of rain falling over 14 days, the month sees an increase compared to the drier months of June, July, and August. This uptick sets the stage for the more robust rains that follow in the coming months, particularly in October and November, where precipitation spikes significantly. Interestingly, September balances the lingering dry spells with a modest yet essential amount of rainfall, nurturing the environment in preparation for the heavier rains that lie ahead, making it a vital month for the region’s agricultural cycle.
In September, Ayacucho experiences a notable increase in humidity, rising to 52% after the drier months of July and August, where levels dipped to their lowest at 54% and 44%, respectively. This shift marks the beginning of a gradual transition toward the wetter months, as humidity levels rise again in October to 65%. Overall, the trend reveals a significant drop from the high humidity of the beginning of the year, where January peaks at 93%. The fluctuation throughout the months highlights Ayacucho's unique climate, with its rich humid atmosphere returning as the year progresses toward its wet season.
In September, Ayacucho, Peru experiences a UV Index of 16, continuing the trend of extreme exposure that has characterized the previous months. As the region transitions from the colder winter months, there's a slight increase in the UV levels, reflecting the approaching spring. With a consistent burn time of just 10 minutes, residents and visitors must remain vigilant, ensuring proper sun protection is in place. This trend of high UV Index values is evident throughout much of the year, with January through April showing particularly intense levels at 19. As such, anyone in Ayacucho should be mindful of their sun exposure and take necessary precautions. For detailed information on UV levels throughout the year, visit Ayacucho UV Index.
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In September, Ayacucho basks in a delightful 317 hours of sunshine, marking a slight dip from the peak sunshine hours of August but still showcasing the region's vibrant and warm climate. As the year progresses, there's a notable upward trend in sunshine from January through August, peaking in July and August with over 320 hours, making these months the sunniest. The decrease in sunlight hours as fall approaches is subtle, transitioning into October's 315 hours, yet the overall yearly trend highlights a strong summer sun that invigorates both the landscape and the spirit. This enduring sunshine in September offers the perfect backdrop for outdoor explorations and cultural festivities, highlighting the region's charm during this golden time of year.
As September rolls in, Ayacucho, Peru, experiences a notable shift in weather, with a 38% chance of sunny days. This marks a decline from the peak sunshine seen in July (65%) and August (51%), yet still offers more favorable conditions compared to the earlier months of the year, where sunny days were scarce. With the arrival of spring, residents and visitors alike can enjoy a pleasantly warm atmosphere, making it a particularly inviting time to explore the region's rich culture and stunning landscapes. As October approaches, however, the likelihood of sunny weather dips again, reflecting a broader trend of fluctuating sun exposure throughout the year in this vibrant Andean city.
In September, Ayacucho, Peru, enjoys a refreshing return to 12 hours of daylight, mirroring the consistent brightness of the earlier months in the year. This shift marks the transition from the more muted light of winter months, where daylight lingers at around 11 hours from April through August. As the days lengthen again into fall, residents bask in the vitality that comes with increased sunlight, offering a vibrant atmosphere perfect for outdoor activities and community gatherings. The trend of stable daylight duration, with 12 hours in January through March and again in October through December, showcases Ayacucho’s tropical highland climate, providing predictable and cherished rhythms of light throughout the year.
As September arrives in Ayacucho, Peru, the gentle breezes begin to pick up, ushering in a slight increase in average wind speed to 1.6 m/s (3.6 mph). This marks a subtle shift from the more consistent and calmer winds of the preceding months, where speeds hovered around 1.4 m/s (3 mph). With the arrival of spring in the Southern Hemisphere, the winds tend to swell slightly, creating a refreshing atmosphere that invigorates the landscape. This gentle uptick holds steady into October, before retreating again in November. Overall, September offers a delightful transition, as the wind starts to invigorate the region, hinting at the changing season ahead.
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.
When comparing the weather in September and January, notable differences emerge. September experiences a wide range of temperatures, with a minimum of 0°C (32°F) and a maximum of 19°C (67°F), creating a cool average of 10°C (49°F). Precipitation is moderate, with 43 mm (1.7 in) falling over 14 days, alongside a relatively low humidity of 52%. In contrast, January sees milder temperatures with a minimum of 3°C (38°F) and a peak of 21°C (70°F), leading to an average of 11°C (51°F). However, this month is significantly wetter, with precipitation reaching 170 mm (6.7 in) across 24 days and high humidity at 93%. For a closer look at January's weather specifics, you can check out Ayacucho weather in January.
In comparing the weather of September and February, both months exhibit similar maximum temperatures, peaking around 19°C (67°F). However, September tends to be cooler on average, with temperatures ranging from a minimum of 0°C (32°F) to an average of 10°C (49°F), while February sees slightly warmer conditions, with minimums around 1°C (34°F) and an average of 11°C (52°F). Additionally, September experiences considerably less rainfall, with only 43 mm (1.7 in) over 14 days, compared to February's much wetter climate, which registers 201 mm (7.9 in) over 26 days. The humidity is also notably higher in February at 92%, compared to September's 52%. For a detailed look at February’s weather, check out Ayacucho weather in February.
September and March present contrasting weather conditions, despite having similar average temperatures. In September, temperatures range from a minimum of 0°C (32°F) to a maximum of 19°C (67°F), with an average of 10°C (49°F). The month experiences relatively low precipitation at 43 mm (1.7 inches) over 14 days and moderate humidity at 52%. In contrast, March features slightly warmer temperatures, with a minimum of 3°C (38°F) and a maximum of 18°C (64°F), while maintaining the same average of 10°C (51°F). However, it is much wetter, with total precipitation reaching 186 mm (7.3 inches) across 30 days and significantly higher humidity at 92%. For more detailed weather insights, you can check Ayacucho weather in March.
In September, temperatures typically range from a low of 0°C (32°F) to a high of 19°C (67°F), with an average of around 10°C (49°F). The month experiences approximately 43 mm (1.7 in) of precipitation over about 14 days, resulting in a relatively moderate humidity level of 52%. In contrast, April also exhibits similar temperature ranges, with minimums at 0°C (33°F) and maximums at 19°C (66°F), averaging around 10°C (50°F). However, April is significantly wetter, receiving about 70 mm (2.8 in) of rainfall spread across 21 days, leading to a much higher humidity level of 90%. For more specific details on weather conditions, you can check Ayacucho weather in April.
In comparing the weather between September and May, both months exhibit similar maximum temperatures, reaching up to 19°C (67°F). However, September tends to have a slightly more moderate average temperature of 10°C (49°F) compared to May's 9°C (49°F). Precipitation levels are also close, with September averaging 43 mm (1.7 in) over 14 days, while May sees slightly less at 37 mm (1.5 in) across 12 days. One notable difference is the humidity; September has a relatively moderate humidity level of 52%, whereas May experiences a higher humidity at 85%, contributing to a damp atmosphere. For a more detailed look at the May weather conditions, you can refer to Ayacucho weather in May.
In September, temperatures in Ayacucho range from a minimum of 0°C (32°F) to a maximum of 19°C (67°F), with an average of 10°C (49°F). This month experiences more precipitation, with 43 mm (1.7 in) over about 14 days and a humidity level of 52%. In contrast, June has slightly cooler temperatures, with a minimum of -2°C (28°F) and a maximum of 18°C (65°F), averaging 9°C (48°F). June sees less rain, totaling 20 mm (0.8 in) over just 5 days, but has higher humidity at 70%. For a comprehensive overview of June weather, check out Ayacucho weather in June.
When comparing the weather in September and July, September generally offers milder conditions with average temperatures reaching 10°C (49°F), while July’s average lags slightly behind at 8°C (47°F). Interestingly, both months share the same maximum temperature of 19°C (66°F), but July experiences cooler minimums, dipping down to -3°C (27°F). Precipitation is notably higher in September with 43 mm (1.7 in) falling over 14 days compared to July’s 16 mm (0.6 in) spread over just 4 days. Humidity remains relatively similar, with July at 54% and September at 52%. For more information on the specifics of July weather, you can visit Ayacucho weather in July.
September weather in Ayacucho shows a noticeable increase in average temperatures compared to August, with the minimum temperature rising from -4°C (25°F) to 0°C (32°F). While both months reach a maximum of 19°C (67°F), September experiences a higher average temperature of 10°C (49°F), compared to August's average of 8°C (47°F). However, September also brings more precipitation, accumulating 43 mm (1.7 in) across 14 rainy days, in contrast to August's 24 mm (1.0 in) over just 7 days. Additionally, humidity levels rise slightly from 44% in August to 52% in September, contributing to a more humid atmosphere. For a detailed overview, you can check out Ayacucho weather in August.
In September, the weather is generally mild, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 19°C (67°F) and an average of 10°C (49°F). The month experiences moderate precipitation with 43 mm (1.7 in) over 14 days and a humidity level of 52%. In contrast, October sees a slight drop in the minimum temperature to -1°C (30°F), although the maximum tends to rise slightly to 21°C (71°F), maintaining an average of 10°C (51°F). This month brings increased rainfall, with 76 mm (3.0 in) expected over 20 days, alongside a higher humidity level of 65%. For more details, you can visit Ayacucho weather in October.
In September, the weather tends to be cooler with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 19°C (67°F), averaging around 10°C (49°F). The month sees relatively low precipitation at 43 mm (1.7 in) over about 14 days, with a humidity level of 52%. In contrast, November experiences milder temperatures, with a minimum of 4°C (39°F) and a maximum of 22°C (71°F), averaging 11°C (53°F). However, it is significantly wetter, with 105 mm (4.1 in) of rainfall over approximately 23 days, and humidity rises to 81%. For a deeper understanding of the climate during this period, check out Ayacucho weather in November.
In comparing the weather conditions of September and December, we observe notable differences in both temperature and precipitation. September experiences a cooler temperature range, with a minimum of 0°C (32°F) and a maximum of 19°C (67°F), while December sees slightly warmer conditions, with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 21°C (70°F).
However, December is significantly wetter, accumulating about 157 mm (6.2 in) of precipitation over 27 days, in contrast to September's 43 mm (1.7 in) over 14 days. Additionally, December's humidity reaches a high of 89%, compared to September's more moderate 52%. For a closer look at December's weather specifics, you can visit Ayacucho weather in December.
As September unfolds in Ayacucho, the weather takes on a unique character compared to the drier months that precede it. With cooler average temperatures and a notable increase in rainfall, this month brings a refreshing shift to the landscape. The average temperatures hover at a comfortable level, enticing visitors to explore the region's rich culture and stunning scenery. However, the 14 days of precipitation and relatively high humidity remind us to pack an umbrella and enjoy the lush greenery that springs to life during this transitional period. For a deeper dive into what to expect throughout the year, check out Ayacucho Climate.