September Weather in Chachapoyas, Peru

Last updated: August 27, 2025

Experience the unique climate of Chachapoyas, Peru in September, where the maximum temperature can reach a comfortable 21°C (71°F), while the average hovers around 13°C (55°F). Be prepared for cooler nights, with temperatures dipping to a minimum of 5°C (42°F). This month also brings significant rainfall, totaling 144 mm (5.7 in), occurring on 24 days, which creates a lush, vibrant landscape. With an average humidity of 42%, visitors will find the air crisp yet invigorating—perfect for exploring the breathtaking natural beauty and rich history of this enchanting region.

September Temperature in Chachapoyas

In September, Chachapoyas, Peru, experiences mild temperatures that reflect a subtle transition as the dry season approaches. The minimum temperature hovers around a cool 5°C (42°F), while the average sits comfortably at 13°C (55°F). The maximum temperature reaches about 21°C (71°F), making it a pleasant time for outdoor exploration. This pattern shows a slight warming trend compared to the previous months, particularly as nighttime temperatures begin to rise. With its consistently cool climate, September is ideal for enjoying the rich natural beauty and historic sites that Chachapoyas has to offer.

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

The chart illustrates September temperature patterns in Chachapoyas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chachapoyas, 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).
JanFebMarAprMayJunJulAugSepOctNovDec575757565655545455565757
Data source: Temperature data for Chachapoyas 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 Chachapoyas

In September, Chachapoyas experiences a notable transition in weather patterns, with 144 mm (5.7 in) of precipitation falling over 24 days. This marks a slight increase from the drier months of July and August, reflecting the onset of the wetter season. While September's rainfall is less than the peaks seen in the subsequent months of October and November, it serves as a precursor to the more intense precipitation later in the year. This pattern suggests a gradual buildup of moisture as Chachapoyas prepares for the heavy rains typical of late fall, highlighting the region's dynamic climatic shifts throughout the year.

September Precipitation Trends in Chachapoyas

The chart displays monthly precipitation patterns in Chachapoyas, 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 Chachapoyas, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec2582683582531911129392144292322344
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Chachapoyas

In September, Chachapoyas experiences a notable uptick in humidity, rising to 42% after the drier months of July and August, which hovered around 44% and 38% respectively. This subtle shift signals the transition from the dry season towards a more humid environment as the year progresses, reminiscent of earlier months like January and March, which boast higher humidity levels of 83% and 88%. As the air grows more moisture-laden, it sets the stage for the lush landscapes of the region, reflecting the natural rhythm of Chachapoyas' climate as it prepares for the upcoming rainy season.

September Average Humidity in Chachapoyas

This chart illustrates the average monthly humidity levels in Chachapoyas, 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 Chachapoyas is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%81%88%85%78%62%44%38%42%58%69%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Chachapoyas

In September, Chachapoyas experiences a UV Index of 16, placing it firmly in the extreme exposure category with a rapid burn time of just 10 minutes. This slight increase from August's UV Index of 14 continues the region's pattern of high UV levels typical throughout the year. From January through April, the index peaks at an impressive 18, indicating an unwavering intensity of sunlight. Interestingly, the UV Index doesn't dip below 13 from June to September, showcasing a consistently high risk for sunburn. As awareness grows around UV exposure, it's crucial for residents and visitors alike to take precautionary measures to shield themselves from the sun's potent rays. For more details, check out the comprehensive data at Chachapoyas UV Index.

Maximum UV Index Levels in Chachapoyas for September

The chart shows the monthly maximum UV Index (UVI) for Chachapoyas 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 Chachapoyas typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec171818181513131416171616
Data source: Chachapoyas 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 Chachapoyas

As September arrives in Chachapoyas, Peru, the city basks in a generous 308 hours of sunshine, a notable highlight in its climatic calendar. Following the peak of summer in August, which boasted an impressive 321 hours, September transitions seamlessly into a period of slightly reduced daylight while still retaining ample sunshine. This trend of abundant sunlight, particularly from May through August, underscores a vibrant dry season that enhances the region's natural beauty. As the year progresses into October with a decrease to 268 hours, the sunlight begins to wane, hinting at the upcoming shift in weather patterns. Overall, September serves as a delightful bridge between the sunlit heights of summer and the cooler, moister months ahead, making it an ideal time for exploration and adventure in this stunning Peruvian haven.

Monthly Sunshine Duration in Chachapoyas: September Highlighted

The September sunshine duration represents the total number of hours Chachapoyas 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.
JanFebMarAprMayJunJulAugSepOctNovDec192h229h224h251h296h294h317h321h308h268h233h262h
Data source: Chachapoyas September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Chachapoyas During September

In Chachapoyas, Peru, September brings a modest 26% chance of sunny weather, positioning it in the middle range of the year. As the dry season approaches, this month offers a notable increase in sunshine compared to the preceding months, particularly from June, which has a 23% chance, and August with 34%. This trend highlights a gradual climb in sunny days as the region transitions from the cooler winter months. However, it’s essential to keep in mind that while September shows better prospects than earlier months, it still falls short of the bright peaks seen in July with a 46% likelihood of sun, suggesting that visitors might still experience a mix of weather during their stay.

Percentage of Sunny Days in September in Chachapoyas

The chart illustrates the percentage of sunny days in Chachapoyas 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 Chachapoyas experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec8%9%6%11%33%23%46%34%26%12%7%13%
Data source: Chachapoyas September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Chachapoyas in September

In Chachapoyas, Peru, the month of September brings a delightful shift in daylight, offering 12 hours of bright sunshine each day. This marks a transition from the previous months, where daylight lasted at 11 hours from April through August. Interestingly, this return to 12 hours of daylight echoes the consistent duration seen in the earlier months of the year, from January to March. Following September, daylight remains abundant in October and through the end of the year, highlighting a stable pattern of extended daylight that enhances the vibrant atmosphere of this picturesque Peruvian region.

Average Daylight Hours in Chachapoyas for September

The chart illustrates the variation in daylight duration in Chachapoyas throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 25m12h 17m12h 6m11h 56m11h 48m11h 45m11h 47m11h 54m12h 3m12h 14m12h 23m12h 27m
Data source: Chachapoyas daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Chachapoyas

As September arrives in Chachapoyas, Peru, the wind begins to pick up its gentle pace, maintaining an average speed of 1.5 m/s (3 mph)—a level consistent with the preceding months of July and August. This slight increase in wind speed, while still mellow, indicates a transition towards a breezier season in the highlands. The overall trend shows that the winds remain relatively calm throughout the year, hovering between 1.1 and 1.5 m/s, creating a serene atmosphere that complements the breathtaking landscapes of this historical region. As the year progresses, the winds tend to soften again in October, returning to their more placid nature, which makes Chachapoyas a year-round haven for nature lovers.

Average September Wind Speed in Chachapoyas

The chart displays monthly wind speed patterns in Chachapoyas, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.21.21.11.11.31.21.51.51.5 m/s1.11.21.2
Data source: Chachapoyas September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Chachapoyas Compares to Other Months

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

September and January in Chachapoyas present distinct weather patterns. In September, temperatures range from a minimum of 5°C (42°F) to a maximum of 21°C (71°F), with an average of 13°C (55°F). The month sees moderate rainfall of 144 mm (5.7 in) over 24 days, accompanied by a lower humidity of 42%. In contrast, January is slightly warmer, with temperatures varying from 7°C (45°F) at night to a high of 23°C (73°F) during the day, averaging 14°C (57°F). However, it experiences significantly higher precipitation, totaling 257 mm (10.1 in) across 25 days, and the humidity rises dramatically to 83%. For a more detailed look at January's climate, visit Chachapoyas weather in January.

When comparing September and February weather in Chachapoyas, notable differences emerge in temperature, precipitation, and humidity. September features a milder temperature range with a minimum of 5°C (42°F) and a pleasant average of 13°C (55°F), peaking at a maximum of 21°C (71°F). In contrast, February experiences slightly warmer conditions, with lows of 7°C (45°F) and a higher average of 14°C (57°F), reaching up to 22°C (73°F). However, February is also significantly wetter, boasting 268 mm (10.5 in) of precipitation spread across 26 days, compared to September's 144 mm (5.7 in) over 24 days. Moreover, February's humidity level rises sharply to 81%, making it feel much more oppressive than the drier September, which holds a humidity level of 42%. For more detailed information on February weather, visit Chachapoyas weather in February.

When comparing the weather between September and March, we observe notable differences in both temperature and precipitation. September experiences cooler temperatures, with a minimum of 5°C (42°F) and an average of 13°C (55°F), while March is slightly warmer, starting at a minimum of 7°C (45°F) and averaging 14°C (57°F). Both months reach a maximum of 21-22°C (71°F), showing a similar high point. However, March brings significantly more rain, with 358 mm (14.1 in) compared to September’s 144 mm (5.7 in), and sees an increase in rainy days from 24 to 30. Additionally, the humidity in March is notably higher at 88%, compared to September's 42%. For more specific details on March weather, you can visit Chachapoyas weather in March.

When comparing the weather in September and April, notable differences emerge. September typically sees milder temperatures, with average lows around 5°C (42°F) and highs reaching 21°C (71°F), while April has slightly warmer averages, with minimum temperatures of 7°C (45°F) and maximums of 22°C (71°F). However, April is significantly wetter, receiving 253 mm (10.0 in) of precipitation over 28 days, compared to September's 144 mm (5.7 in) over 24 days. This increase in rainfall is accompanied by much higher humidity levels in April at 85%, in contrast to September’s drier conditions with only 42% humidity. For more detailed insights, you can check Chachapoyas weather in April.

When comparing the weather in September and May, we can observe some notable differences. In September, temperatures typically range from a minimum of 5°C (42°F) to a maximum of 21°C (71°F), with an average of 13°C (55°F). The month experiences about 144 mm (5.7 in) of precipitation over approximately 24 days, and the humidity sits at 42%. In contrast, May sees slightly warmer temperatures with a minimum of 6°C (43°F) and a maximum of 22°C (71°F), also averaging 13°C (57°F). However, May is wetter, with precipitation reaching 191 mm (7.5 in) over 27 days and a significantly higher humidity level at 78%. For more detailed insights, you can check Chachapoyas weather in May.

In both September and June, temperatures in Chachapoyas are quite similar, with minimums around 5°C (42°F), averages of 13°C (55-56°F), and maximums peaking at 21°C (70-71°F). However, September experiences a higher total precipitation of 144 mm (5.7 in) over 24 days, compared to June's 112 mm (4.4 in) spread over 21 days. Additionally, June tends to be more humid, with a humidity level of 62%, while September is slightly drier at 42%. For more detailed information, you can check Chachapoyas weather in June.

When comparing the weather between September and July, it's clear that September tends to be slightly warmer, with average temperatures around 13°C (55°F) compared to July's average of 12°C (54°F). Both months feature a minimum temperature of about 5°C (41°F), while September reaches a maximum of 21°C (71°F), just shy of July's 22°C (72°F). However, September experiences significantly more precipitation, with 144 mm (5.7 in) falling over 24 days, in contrast to July's 93 mm (3.7 in) over 19 days. Humidity levels are comparable, at 42% in September and 44% in July, making both months feel relatively similar in that regard. For a closer look at July's weather specifics, check out Chachapoyas weather in July.

In comparing the weather of September and August, we observe that September tends to be slightly warmer, with average temperatures of 13°C (55°F) compared to August's 12°C (55°F). Both months share the same maximum temperature of 21°C (71°F), but September has a higher minimum temperature of 5°C (42°F) versus 4°C (39°F) in August. Precipitation levels also increase significantly in September, with 144 mm (5.7 in) falling over 24 days, compared to 92 mm (3.6 in) over 19 days in August. Additionally, humidity is slightly higher in September at 42%, compared to 38% in August. For a closer look at August's specific conditions, check out Chachapoyas weather in August.

In comparing the weather between September and October, we observe a slight increase in temperatures, with October featuring average highs of 22°C (72°F) compared to September's 21°C (71°F). While the minimum temperatures only shift slightly, from 5°C (42°F) in September to 6°C (43°F) in October, the overall humidity rises significantly in October to 58%, up from 42% in September. Precipitation also sees a notable increase, with October experiencing 292 mm (11.5 in) across 29 days, compared to September's 144 mm (5.7 in) over 24 days. For a more detailed look at October weather, you can visit Chachapoyas weather in October.

September and November present notable differences in weather patterns. In September, temperatures range from a cooler minimum of 5°C (42°F) to a maximum of 21°C (71°F), with an average temperature of 13°C (55°F). The month sees a fair amount of precipitation, totaling 144 mm (5.7 in) over 24 days, and humidity levels are relatively low at 42%. In contrast, November brings slightly warmer temperatures, with a minimum of 8°C (46°F) and a maximum of 22°C (72°F), averaging 14°C (58°F). However, it also experiences increased precipitation, amounting to 322 mm (12.7 in) across 27 days, and significantly higher humidity at 69%. To explore more about November weather, you can check out Chachapoyas weather in November.

When comparing the weather in September and December, we can see some notable differences. September brings cooler temperatures, with a minimum of 5°C (42°F) and an average of 13°C (55°F), while December sees slightly warmer conditions, with a minimum of 8°C (46°F) and an average of 14°C (58°F). Additionally, December experiences significantly more precipitation, totaling 344 mm (13.6 in) over 28 days, compared to September’s 144 mm (5.7 in) spread over 24 days. The humidity also rises sharply in December to 82%, compared to September’s moderate 42%. For more details, see Chachapoyas weather in December.

Compare Chachapoyas's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Chachapoyas

In September, Chachapoyas experiences a transition in its weather, setting itself apart from the drier months. With daytime temperatures averaging a pleasant 13°C and a maximum that reaches 21°C, the days are comfortably cool yet inviting. However, this month is characterized by its frequent rain, as nearly every day contributes to the 144 mm of precipitation. This increase in rain creates a more humid atmosphere, hovering around 42%, and plays a vital role in nurturing the region's lush landscapes. Visitors seeking to explore Chachapoyas during September should prepare for these conditions, as the vibrant greenery offers a stunning backdrop despite the occasional showers. For more insights, check out the Chachapoyas Climate.