September Weather in Colca, Peru

Last updated: August 27, 2025

In September, Colca, Peru experiences a unique blend of weather that offers a glimpse into the region's natural beauty. With maximum temperatures reaching up to 20°C (67°F) and an average of 10°C (50°F), the days are pleasantly mild, while nights can drop to a chilly minimum of -1°C (31°F). This month also brings a significant amount of rainfall, totaling 52 mm (2.1 in) over approximately 14 days, contributing to the lush landscapes that the Colca Canyon is renowned for. Humidity hovers around 52%, creating a refreshing atmosphere that makes exploring the area both invigorating and enjoyable. Whether you're trekking through remarkable scenery or immersing yourself in local culture, September is a captivating time to experience Colca.

September Temperature in Colca

In September, Colca, Peru experiences a gentle transition as temperatures begin to warm, making it an appealing time to visit. The minimum temperature hovers around -1°C (31°F), while the average climbs to a comfortable 10°C (50°F), peaking at a delightful 20°C (67°F) during the day. This slight rise in warmth from the cooler months of June and August signals the onset of spring, making the landscapes even more lush and vibrant. Visitors can enjoy the crisp morning air while basking in the pleasant afternoon sun, highlighting September as a month of refreshing change in this breathtaking region.

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

The chart illustrates September temperature patterns in Colca, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Colca, 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).
JanFebMarAprMayJunJulAugSepOctNovDec515150494847464850515251
Data source: Temperature data for Colca generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Colca

In September, Colca, Peru experiences a notable shift as the dry winter months give way to the burgeoning wet season. With 52 mm (2.1 in) of precipitation spread across 14 days, this month marks a significant increase compared to the minimal rains of the preceding months. The gradual rise in precipitation illustrates a clear upward trend as the region approaches its peak rainy period, with figures soaring in the subsequent months. This transitional phase not only fosters rejuvenation in the landscape but also signals a shift in local climate patterns, setting the stage for October's heavier downpours and bountiful vegetation. As the rains return, life in Colca begins to flourish once more, highlighting the vital relationship between the region's weather and its vibrant ecosystem.

September Precipitation Trends in Colca

The chart displays monthly precipitation patterns in Colca, 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 Colca, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec209231250834414152252107138219
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Colca

As September arrives in Colca, Peru, a subtle shift in humidity can be observed. Following the dry spell of August, where humidity plunged to a low of 44%, September experiences a moderate uptick to 52%. This is part of a broader trend, as humidity begins to increase again after a summer of considerably lower levels. The gradual rise continues into October, marking a transition back towards the wetter conditions characteristic of the region, with November and December returning to significantly higher humidity levels of 81% and 89% respectively. This cyclical fluctuation highlights Colca's unique climate patterns, where the latent moisture in the air swells after the arid months, setting the stage for the lushness that follows.

September Average Humidity in Colca

This chart illustrates the average monthly humidity levels in Colca, 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 Colca is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%92%90%85%70%55%44%52%65%81%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Colca

In September, the UV Index in Colca, Peru reaches 16, maintaining an extreme exposure category with a crucial burn time of just 10 minutes. As we transition from the winter months, we see a gradual increase in UV intensity compared to earlier in the year, yet it remains slightly lower than the intense peak observed in the first half of the year. Throughout these months, the region consistently showcases a significant UV challenge, emphasizing the importance of sun protection measures. For a deeper insight into the UV trends through the year, visit Colca UV Index.

Maximum UV Index Levels in Colca for September

The chart shows the monthly maximum UV Index (UVI) for Colca 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 Colca typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec181919171411131416181818
Data source: Colca 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 Colca

As the crisp September days unfold in Colca, Peru, the region basks in 315 hours of sunshine, marking a splendid transition from the peak of winter into spring. This month continues a remarkable trend established over the previous eight months, where daylight hours steadily increased to reach their zenith in August with 328 hours. September, while slightly cooler than August, still offers a generous amount of sunlight, making it an ideal time for exploration and outdoor activities. As the days grow shorter towards October, with 311 hours of sunshine, visitors can revel in the warm glow that lingers in the air, edging closer to the vibrant bloom of spring that awaits.

Monthly Sunshine Duration in Colca: September Highlighted

The September sunshine duration represents the total number of hours Colca 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.
JanFebMarAprMayJunJulAugSepOctNovDec228h249h279h285h313h299h318h328h315h311h279h274h
Data source: Colca September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Colca During September

In Colca, Peru, September offers a moderate 36% chance of sunny weather, a gradual decline from the vibrant summer months of July and August, which boast the highest probabilities at 64% and 54%, respectively. As the dry season approaches its conclusion, visitors can still enjoy a mix of sun and clouds, making it an ideal time for exploring the stunning landscapes and rich culture of the region. Despite the dip in sunshine compared to the peak months, the pleasant weather in September creates a unique opportunity to experience the beauty of Colca without the overwhelming crowds of peak tourist times. Overall, while not guaranteed, the allure of sunny days is still present, making this month particularly charming for travelers.

Percentage of Sunny Days in September in Colca

The chart illustrates the percentage of sunny days in Colca 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 Colca experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec8%13%7%24%42%39%64%54%36%24%10%16%
Data source: Colca September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Colca in September

In September, Colca, Peru, enjoys a rejuvenating 12 hours of daylight, mirroring the sunlit expanses of the earlier months in January and February. This shift from the shorter days of winter, which lingered through May to August, signifies a gentle transition back to longer daylight, enthusiasm palpable amongst locals and visitors alike. As autumn approaches and daylight increases once more, the vibrant landscapes of Colca can be fully appreciated, inviting exploration and adventure under the sun's warm embrace. The consistent rhythm of 12-hour days from September to November heralds a delightful period for outdoor activities and cultural experiences in this stunning region.

Average Daylight Hours in Colca for September

The chart illustrates the variation in daylight duration in Colca throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 49m12h 31m12h 8m11h 45m11h 27m11h 18m11h 23m11h 39m12h 1m12h 24m12h 44m12h 54m
Data source: Colca daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Colca

As September arrives in Colca, Peru, the gentle rustle of the wind begins to pick up, with average speeds reaching 1.4 m/s (3 mph)—the highest of the year thus far. This subtle shift from June's steady 1.1 m/s marks the onset of a transitional phase, as the once calm breezes gradually intensify leading into the spring months. From May through September, a clear upward trend emerges, where the wind gradually gains momentum, reflecting a vibrant change in the atmosphere. Conversely, following September, the wind velocity dips slightly in October before stabilizing again through the end of the year. This delicate interplay of wind speeds embodies the seasonal rhythm of Colca, inviting both locals and travelers to experience the region’s serene yet invigorating landscape.

Average September Wind Speed in Colca

The chart displays monthly wind speed patterns in Colca, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.11.21.11.11.11.11.21.31.4 m/s1.21.11.2
Data source: Colca September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Colca Compares to Other Months

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

September and January present contrasting weather conditions. In September, temperatures range from a minimum of -1°C (31°F) to a maximum of 20°C (67°F), with an average of around 10°C (50°F). This month sees moderate precipitation of 52 mm (2.1 inches) spread over about 14 days, accompanied by a humidity level of 52%. In contrast, January enjoys slightly milder temperatures, with a minimum of 2°C (36°F) and a maximum reaching 20°C (68°F), while maintaining a similar average of 10°C (51°F). However, January is significantly wetter, with precipitation totaling 209 mm (8.2 inches) over 23 days and a much higher humidity level at 93%. For more information on January weather, you can visit Colca weather in January.

September and February present distinct weather patterns. In September, temperatures range from a minimum of -1°C to a maximum of 20°C, with an average of 10°C. The month sees a moderate level of precipitation at 52 mm over 14 days, and humidity levels average around 52%. In contrast, February experiences slightly milder temperatures, with a minimum of 0°C and a maximum of 19°C, while the average remains similar at 10°C. However, February is significantly wetter, receiving 230 mm of rainfall over 27 days, coupled with higher humidity levels at 92%. For more insights, you can check Colca weather in February.

When comparing the weather in September and March, several notable differences emerge. September typically experiences cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 20°C (67°F), while March is slightly warmer, with a minimum of 3°C (37°F) and a maximum of 18°C (65°F). Interestingly, both months have an average temperature of around 10°C (50°F and 51°F, respectively). However, March is characterized by significantly higher precipitation, averaging 250 mm (9.8 in) over 30 days, compared to September's 52 mm (2.1 in) over just 14 days. This results in a much higher humidity level in March at 92%, contrasted with September's 52%. For more detailed insights, you can check Colca weather in March.

In comparing the weather of September and April, we find some notable differences. September typically presents a milder climate with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 20°C (67°F) and an average of 10°C (50°F). In contrast, April experiences slightly cooler conditions with temperatures dipping to a minimum of -3°C (27°F) and peaking at 18°C (65°F), although the average remains the same at 10°C (50°F).

Precipitation levels also vary significantly; September receives around 52 mm (2.1 in) over approximately 14 days, while April sees a higher total of 83 mm (3.3 in) spread across 19 days, contributing to higher humidity at 90% compared to September's 52%. The increased moisture in April may lead to a more lush environment, as detailed in this link: Colca weather in April. Overall, April can be seen as a wetter and cooler month, whereas September offers a more moderate and drier climate.

In comparing the weather of September and May, September presents a slightly milder climate with average temperatures around 10°C (50°F), peaking at a maximum of 20°C (67°F). In contrast, May has a similar average temperature of 9°C (48°F) but experiences a lower maximum of 19°C (66°F). Precipitation in September is somewhat higher at 52 mm (2.1 in) over 14 days, compared to May's 44 mm (1.7 in) over 12 days, indicating a slightly wetter month. Interestingly, while September has a more moderate humidity level at 52%, May is notably more humid with 85%. For those interested in more details about weather conditions during this month, you can check out Colca weather in May.

In comparing the weather of September to June, September tends to be warmer overall, with average temperatures ranging from 10°C (50°F) and a maximum of 20°C (67°F), while June has an average of 8°C (47°F) and peaks at 18°C (64°F). Additionally, September experiences more precipitation, with 52 mm (2.1 in) spread across 14 days, compared to June's 14 mm (0.5 in) over just 4 days. However, June has higher humidity levels at 70%, compared to September's 52%. These differences highlight a shift in conditions as the seasons change. For more detailed insights about weather in June, visit Colca weather in June.

September experiences milder temperatures compared to July, with an average of 10°C (50°F) and a maximum of 20°C (67°F), while July's average temperature is slightly lower at 8°C (47°F) with a maximum of 19°C (66°F). Additionally, September tends to be wetter, receiving 52 mm (2.1 in) of precipitation over 14 days, compared to July's much drier climate, which sees only 15 mm (0.6 in) of rain over just 3 days. Humidity levels are similar in both months, with September at 52% and July at 54%. For more insights on weather patterns, you can refer to Colca weather in July.

In September, the temperatures are slightly warmer than in August, with an average of 10°C (50°F) compared to August's average of 9°C (48°F). The maximum temperature in September reaches 20°C (67°F), while August peaks at 19°C (66°F). Additionally, September experiences significantly more precipitation, totaling 52 mm (2.1 in) over 14 days, compared to August's 22 mm (0.9 in) over just 6 days, which results in higher humidity levels of 52% in September, compared to August's 44%. For more detailed information, you can check Colca weather in August.

In September, temperatures range from a minimum of -1°C (31°F) to a maximum of 20°C (67°F), with an average of around 10°C (50°F). The month experiences moderate precipitation of 52 mm (2.1 in) over 14 days, with humidity at 52%. In contrast, October sees slightly warmer temperatures, with a maximum of 21°C (69°F) and similar minimum temperatures, but the average rises to 10°C (51°F). However, October brings significantly more rain, with 107 mm (4.2 in) of precipitation spread across 22 days and increased humidity at 65%. For more detailed insights, you can check Colca weather in October.

In September, temperatures begin to cool with a minimum of -1°C (31°F) and an average of 10°C (50°F), peaking at a comfortable 20°C (67°F). During this month, precipitation is relatively light, totaling 52 mm (2.1 in) over 14 days, and humidity sits at a moderate 52%.

In contrast, November experiences slightly warmer temperatures, with a minimum of 0°C (33°F) and an average of 11°C (52°F), reaching a high of 22°C (72°F). However, November also brings significantly more rain, with precipitation increasing to 138 mm (5.4 in) over 21 days, and humidity rising to a notable 81%. For more detailed insights, check out Colca weather in November.

September and December exhibit notable differences in weather patterns. In September, temperatures range from a minimum of -1°C (31°F) to a maximum of 20°C (67°F), with an average of 10°C (50°F). The month sees a relatively modest 52 mm (2.1 in) of precipitation over about 14 days, accompanied by a humidity level of 52%. In contrast, December experiences slightly cooler temperatures, with a minimum of -2°C (28°F) and a maximum of 21°C (69°F), while the average temperature remains similar at 11°C (52°F). However, this month is marked by significantly higher precipitation, totaling 219 mm (8.6 in) across 26 days, and a much higher humidity level of 89%. For more information on December weather specifics, you can visit Colca weather in December.

Compare Colca's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Colca

In September, Colca experiences a notable transition in its weather patterns compared to other months. The temperatures remain moderate, with pleasant days, but chilly nights remind us that winter is on its way out. While humid conditions persist, they bring with them a slight increase in precipitation, leading to an average of 14 damp days. This refreshing change sets the stage for the incoming spring, as the landscape begins to awaken with life. If you're interested in a more detailed look at the year's climate variations, be sure to check out Colca Climate.