September Weather in Copiapo, Chile

Last updated: August 21, 2025

September in Copiapó, Chile showcases a delightful transition into spring, characterized by maximum temperatures reaching 29°C (84°F) and an average of 16°C (61°F). The mornings can be cool, with a minimum temperature dipping to 3°C (38°F). This month is notably dry, boasting a mere 1 mm (0.1 in) of rainfall across 0 precipitation days, allowing for plenty of sunshine and outdoor activities. With an average humidity of 58%, the weather is generally comfortable, creating an inviting atmosphere for visitors and residents alike.

September Temperature in Copiapo

In September, Copiapó experiences a subtle transition from the chill of winter to the warmth of spring. With minimum temperatures rising to 3°C (38°F) and daytime averages nudging up to 16°C (61°F), the days become increasingly inviting. The warmth peaks at a comfortable 29°C (84°F), echoing the lingering heat from the preceding months of winter. This month signals a shift, as the temperatures inch upwards compared to August, which had similar highs but cooler averages. This gradual increase in warmth sets the stage for the inviting spring weather of the coming months, making September a time of rejuvenation and promise in this vibrant Chilean region.

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

The chart illustrates September temperature patterns in Copiapo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Copiapo, 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).
JanFebMarAprMayJunJulAugSepOctNovDec696967646056565861646567
Data source: Temperature data for Copiapo 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 Copiapo

In September, Copiapó, Chile experiences a slight increase in precipitation, recording 1 mm of rainfall, which marks a continuation of the dry trend characteristic of the region. Following the minimal moisture from the winter months, September's single measurement reflects the overall arid climate where the city sees limited rainfall throughout most of the year. Notably, this month does not register any precipitation days, emphasizing the scarcity of moisture that defines the local weather patterns. As Copiapó transitions into spring, these dry conditions persist, with the next months typically showing little to no precipitation, reinforcing the region's reputation as one of the driest in the world.

September Precipitation Trends in Copiapo

The chart displays monthly precipitation patterns in Copiapo, 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 Copiapo, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec100098221000
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Copiapo

As September arrives in Copiapó, Chile, the atmosphere begins to shift, with humidity levels dipping to 58%. This marks a continuation of the declining trend that has characterized the region's humidities during the cooler months, reaching its lowest point in August at 60%. The steady decrease from a humid high of 78% in March showcases the transition from the warmer summer months into the crisper fall, as the desert landscape starts to embrace a more arid feel. This gradual reduction in humidity not only alters the air quality but also prepares the environment for the approaching drier months ahead.

September Average Humidity in Copiapo

This chart illustrates the average monthly humidity levels in Copiapo, 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 Copiapo is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%76%78%71%68%64%63%60%58%56%58%63%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Copiapo

As September arrives in Copiapó, Chile, residents and visitors alike need to remain vigilant about sun exposure, as the UV Index climbs to 10, categorizing it as very high. This trend towards elevated UV levels continues from August, which also recorded a UV Index of 8. It's a noticeable shift from the milder readings of winter; as the days grow longer and warmer, the recommended burn time decreases to just 15 minutes. With the UV Index reaching extreme levels in the preceding months, vigilance is essential—make sure to protect your skin and eyes during this transition. For more detailed information, please visit the Copiapo UV Index.

Maximum UV Index Levels in Copiapo for September

The chart shows the monthly maximum UV Index (UVI) for Copiapo 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 Copiapo typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16151310756810131516
Data source: Copiapo 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 Copiapo

As September rolls into Copiapó, Chile, residents eagerly welcome the warmth and brightness of the sun with an impressive 339 hours of sunshine. This marks a delightful continuation of the increasing daylight that begins in the southern hemisphere as winter bids farewell. Following a consistent rise from 328 hours in August, September paves the way for an even sunnier October and November, which boast 371 and 382 hours of sunshine, respectively. The transition from the cooler months is marked by both warmth and light, making September a perfect time for outdoor adventures and enjoying the natural beauty of the region, as daylight becomes an invitation to explore and rejuvenate.

Monthly Sunshine Duration in Copiapo: September Highlighted

The September sunshine duration represents the total number of hours Copiapo 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.
JanFebMarAprMayJunJulAugSepOctNovDec318h344h358h324h309h288h303h328h339h371h382h399h
Data source: Copiapo September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Copiapo During September

In Copiapó, Chile, September boasts a favorable likelihood of sunny weather, with a commendable 93% chance of sun. This makes it one of the brighter months as the seasons transition from winter to spring. Following the peak of summer in January, when the sun shines almost uninterrupted at 99%, there is a gradual decline into the cooler months, but September maintains a strong presence of sunshine. This favorable weather trend hints at the approach of warmer days, making it an appealing time for outdoor activities and exploration in this arid region. As October rolls in, the sun returns with a 96% assurance, reinforcing that September is an excellent choice for those seeking bright skies and pleasant temperatures.

Percentage of Sunny Days in September in Copiapo

The chart illustrates the percentage of sunny days in Copiapo 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 Copiapo experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec99%95%96%86%70%87%75%91%93%96%91%87%
Data source: Copiapo September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Copiapo in September

As September unfolds in Copiapó, Chile, daylight begins to transition toward longer hours, offering approximately 11 hours of sunlight. This month marks the tail end of winter, with daylight extending slightly compared to the darker winter months of June and July, which both feature only 10 hours of light. Following September, the days will continue to lengthen, gradually reaching 12 hours in October and peaking at 13 hours in the summer months of January and February. Thus, September serves as a gentle reminder of the spring's arrival, promising brighter days ahead while still holding onto a hint of winter's embrace.

Average Daylight Hours in Copiapo for September

The chart illustrates the variation in daylight duration in Copiapo throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 37m13h12h 12m11h 23m10h 44m10h 25m10h 35m11h 10m11h 56m12h 45m13h 27m13h 49m
Data source: Copiapo daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Copiapo

As September rolls into Copiapó, Chile, the winds continue their gentle dance, with an average speed of 1.9 m/s (4 mph). This trend reflects a consistent pattern seen throughout the year, where wind speeds fluctuate only slightly, generally hovering around the 2.0 m/s (5 mph) mark in the summer and early winter months. Following a gradual descent from the summer's calm breezes, September maintains this mildness, leading seamlessly into the more varied autumn winds. As the season progresses, locals can expect the winds to pick up slightly in October, hinting at the dynamic shifts that are typical of the region's climate while still keeping the overall experience pleasantly calm.

Average September Wind Speed in Copiapo

The chart displays monthly wind speed patterns in Copiapo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.12.01.91.71.81.92.01.91.9 m/s2.02.02.1
Data source: Copiapo September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Copiapo Compares to Other Months

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

In September, temperatures in Copiapó range from a cool minimum of 3°C (38°F) to a warm maximum of 29°C (84°F), with an average of 16°C (61°F). The month sees little to no precipitation and maintains a comfortable humidity level of 58%. In contrast, January offers slightly warmer conditions, with a minimum temperature of 12°C (54°F) and a maximum of 30°C (86°F), averaging 20°C (69°F). Although precipitation remains minimal at 1 mm (0.0 in) and with no rainy days, the humidity increases to 74%. For a more detailed look at January's weather, you can check Copiapo weather in January.

In September, temperatures in Copiapó range from a minimum of 3°C (38°F) to a maximum of 29°C (84°F), with an average of 16°C (61°F). The month is characterized by minimal precipitation, averaging just 1 mm (0.1 in) and featuring no rainy days, with a humidity level of 58%. In contrast, February offers milder conditions, with temperatures varying from a minimum of 13°C (56°F) to a maximum of 28°C (83°F) and an average of 20°C (69°F). This month also experiences no rainfall and reaches a higher humidity of 76%, making it notably more humid than September. For more details, you can check Copiapo weather in February.

September and March in Copiapó showcase distinct weather patterns that reflect the transition between seasons. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 29°C (84°F), with a comfortable average of 16°C (61°F). The month experiences minimal precipitation, with only 1 mm recorded and no rainy days, accompanied by a humidity level of 58%. In contrast, March brings warmer temperatures, with a minimum of 12°C (54°F) and a maximum of 28°C (82°F), averaging 20°C (68°F). Notably, March is dry as well, recording no precipitation, yet it has higher humidity at 78%. For more details about the weather during this month, visit Copiapo weather in March.

In September, the weather features a wider temperature range, with a minimum of 3°C (38°F) and a maximum of 29°C (84°F), while maintaining a mild average temperature of 16°C (61°F). The month is characterized by very low precipitation, with only 1 mm (0.1 in) and no rainy days, along with a humidity level of 58%. In contrast, April enjoys slightly warmer conditions, starting at a minimum of 8°C (47°F) and reaching up to 28°C (83°F), with an average of 18°C (65°F). Additionally, April is completely dry with 0 mm of precipitation, but the humidity is higher at 71%. For more details on the April climate, you can visit Copiapo weather in April.

In September, the weather tends to be warmer, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 29°C (84°F) and an average of 16°C (61°F). In contrast, May experiences slightly cooler temperatures, with a minimum of 2°C (35°F), a maximum of 26°C (79°F), but maintains a similar average of 16°C (60°F). While September boasts virtually no precipitation, May sees 9 mm (0.4 in) of rainfall over just one day, contributing to its higher humidity level of 68% compared to September's 58%. For more detailed weather information, check out Copiapo weather in May.

In comparing the weather between September and June, we observe some notable differences. September boasts temperatures ranging from a minimum of 3°C (38°F) to a pleasant average of 16°C (61°F), with maximums reaching up to 29°C (84°F). Interestingly, this month experiences very little precipitation, averaging just 1 mm (0.1 in) and with no rainy days, alongside a humidity level of 58%.

Conversely, June showcases slightly cooler temperatures, with a minimum of 1°C (34°F) and an average of 13°C (56°F), while still matching September's maximum temperature of 29°C (84°F). However, June is characterized by higher precipitation levels, averaging 8 mm (0.3 in) over one rainy day, and a humidity level of 64%. For those interested in exploring more about the weather conditions in June, Copiapo weather in June provides further insights.

In comparing the weather of September and July, September tends to be slightly warmer with an average temperature of 16°C (61°F) compared to July's 13°C (56°F). Both months feature minimal precipitation, with only 1 mm in September and 2 mm in July, and no recorded rainy days. Interestingly, while July has a lower minimum temperature of 0°C (33°F), September boasts a higher maximum temperature of 29°C (84°F) compared to July’s 30°C (86°F). Humidity levels are also noteworthy; September shows a humidity of 58%, slightly lower than July's 63%. For a more detailed look at July weather, visit Copiapo weather in July.

September experiences slightly warmer temperatures compared to August, with an average of 16°C (61°F) compared to August's 15°C (59°F). Both months see similar maximum temperatures, peaking at 29°C (84°F) in September and 29°C (85°F) in August. However, September boasts lower precipitation, receiving only 1 mm (0.1 in) compared to August’s 2 mm (0.1 in), and both months record no rainy days. Humidity levels are also slightly lower in September at 58%, versus 60% in August. For more detailed conditions, check Copiapo weather in August.

In September, the weather features a minimum temperature of 3°C (38°F) and an average of 16°C (61°F), occasionally peaking at a maximum of 29°C (84°F). Despite some warmth, September experiences a surprisingly low precipitation of only 1 mm (0.1 in) across the month with no rainy days, and a humidity level of 58%.

In contrast, October brings slightly warmer conditions, beginning with a minimum of 7°C (45°F) and an average of 18°C (64°F), with a high reaching 27°C (81°F). Notably, October remains dry as well, reporting no precipitation, and a slightly lower humidity of 56%. For more details, you can check out Copiapo weather in October.

In September, the weather features a wide range of temperatures, with minimums dropping to 3°C (38°F) and maximums reaching 29°C (84°F). This month experiences an average temperature of 16°C (61°F) and very little precipitation, with just 1 mm recorded. The humidity remains at 58%, contributing to a relatively comfortable atmosphere.

In contrast, November sees milder nighttime temperatures, with minimums around 10°C (50°F) and daytime highs reaching up to 30°C (86°F). The average temperature rises to 19°C (66°F), and notably, there is no recorded precipitation, ensuring dry conditions throughout the month. Humidity stays consistent at 58%, providing a similar moisture level compared to September. Overall, November offers a warmer experience without any rainy days, making it an appealing time to enjoy outdoor activities in the region. For more details, check out Copiapo weather in November.

In September, temperatures range from a chilly minimum of 3°C (38°F) to a comfortable average of 16°C (61°F), peaking at a warm 29°C (84°F). With virtually no precipitation and a humidity of 58%, September offers clear and pleasant weather. In contrast, December features milder minimum temperatures at 11°C (53°F) and maintains a slightly higher average of 19°C (67°F), while still reaching highs of 29°C (84°F). December also boasts zero precipitation and a marginally higher humidity of 63%, making it an ideal time to enjoy outdoor activities. For more details on December weather, you can check Copiapo weather in December.

Compare Copiapo's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Copiapo

In September, Copiapó experiences a pleasant transition from the cooler winter months to the warmth of spring, marked by an average temperature of 16°C (61°F) and a maximum of 29°C (84°F). This month stands out for its remarkably low precipitation, with no rain recorded, making it a dry escape compared to the wetter months that precede it. With a comfortable humidity level of 58%, September offers ideal weather for outdoor activities, a sharp contrast to the chill of the preceding winter. For a deeper dive into the nuances of Copiapó's climatic patterns, be sure to explore Copiapo Climate.