September Weather in Valdivia, Chile

Last updated: August 21, 2025

In September, Valdivia, Chile, experiences a transitional climate marked by mild temperatures and notable rainfall. With a maximum temperature reaching 20°C (68°F) and an average of 9°C (49°F), the days gradually warm as winter gives way to spring. However, nights can be chilly, dropping to a minimum of 2°C (36°F). This month sees significant precipitation, totaling 147 mm (5.8 in) over 12 rainy days, contributing to the lush greenery characteristic of the region. The high humidity level of 82% adds to the wet feel, making it essential for visitors to come prepared for the frequent showers while enjoying the vibrant natural beauty of Valdivia.

September Temperature in Valdivia

In September, Valdivia, Chile, transitions into the spring season, with temperatures gradually warming up as the month progresses. The average temperature reaches around 9°C (49°F), while daily highs can climb to a pleasant 20°C (68°F). The minimum temperature starts at a cool 2°C (36°F), making early mornings brisk compared to the milder afternoons. This month marks a significant shift from the cooler winter months, as both day and night temperatures increase steadily, providing a refreshing backdrop for the blooming landscape. Overall, September encapsulates a delightful blend of warmth and freshness, signaling the arrival of spring.

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

The chart illustrates September temperature patterns in Valdivia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Valdivia, 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).
JanFebMarAprMayJunJulAugSepOctNovDec606157535047464748515558
Data source: Temperature data for Valdivia 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 Valdivia

In September, Valdivia experiences a notable transition as the city shifts from the heavy rains of winter to a more moderate climate. The total precipitation for the month reaches 147 mm (5.8 in) over 12 days, indicating a decrease compared to the preceding months of June and August, which bring significantly higher totals. This shift marks the beginning of spring, as the atmosphere becomes more temperate and vibrant. Though rainfall is still present, the reduced precipitation suggests a move towards clearer skies, easing the dramatic flush of water that dominates the winter months. As September unfolds, one can almost feel the anticipation of emerging blooms and sunnier days ahead, setting the stage for a lush and colorful season in this picturesque region.

September Precipitation Trends in Valdivia

The chart displays monthly precipitation patterns in Valdivia, 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 Valdivia, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec2731821221973312632791471298550
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Valdivia

In September, Valdivia experiences a noticeable shift in humidity, settling at 82% as the transition from winter to spring begins. This marks a slight decrease from the 86% levels maintained throughout the previous four months, indicating a gradual easing of the dense, moisture-laden air characteristic of the colder months. Interestingly, this month stands as a pivot, where humidity begins to decline further leading into October's 78%, subtly hinting at the drier conditions of the approaching summer. Overall, the trend illustrates Valdivia's humid climate, with September serving as a crucial point in the yearly humidity cycle, bridging the cooler, wetter periods with the drier months ahead.

September Average Humidity in Valdivia

This chart illustrates the average monthly humidity levels in Valdivia, 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 Valdivia is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec69%69%70%77%86%86%87%86%82%78%74%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Valdivia

In September, Valdivia, Chile, experiences a notable shift in its UV Index, registering at 7 under the high exposure category, with a burn time of just 25 minutes. This marks a transition from the milder UV levels seen in winter months, where the index hovered around 3 to 5, reflecting moderate exposure. The rise in UV intensity is indicative of the approaching spring, setting the stage for more intense sunlight in the coming months. As temperatures begin to warm, it's crucial for residents and visitors alike to stay vigilant about sun safety, particularly in anticipation of October's UV Index surge to 9. With these fluctuating levels, knowing when to take precautions becomes vital. For in-depth insights and daily updates, check out Valdivia UV Index.

Maximum UV Index Levels in Valdivia for September

The chart shows the monthly maximum UV Index (UVI) for Valdivia 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 Valdivia typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec14131064335791214
Data source: Valdivia 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 Valdivia

In Valdivia, Chile, September marks a vibrant transition towards the sunny spring months, with an impressive 262 hours of sunshine gracing the city. This delightful increase in daylight contrasts sharply with the preceding months, as Valdivia revives from the grip of winter's gloom, which saw its lowest sunshine hours in June with just 152 hours. After a gradual rise in sunlight during the late winter months, September stands out as a beacon of warmth, hinting at the glorious days ahead. Following this blooming month, the sunshine continues to surge, culminating in December's peak of 371 hours. The trend not only reflects the seasonal shift but also the rejuvenating spirit of Valdivia as it welcomes longer days and brighter skies.

Monthly Sunshine Duration in Valdivia: September Highlighted

The September sunshine duration represents the total number of hours Valdivia 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.
JanFebMarAprMayJunJulAugSepOctNovDec301h320h319h240h204h152h179h203h262h305h324h371h
Data source: Valdivia September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Valdivia During September

In Valdivia, Chile, September marks a gradual transition into spring, with a 43% chance of sunny weather. This slight uptick from the winter months indicates the onset of brighter days, although the likelihood remains modest compared to the peak summer months of January and February, which boast chances over 70%. The trend shows a slow and steady increase in sun exposure as the year progresses, suggesting that while September offers a promising glimpse of sunshine, visitors should still be prepared for the region's characteristic clouds and rain. As October approaches, the chances improve to 48%, signaling the arrival of more consistently pleasant weather in Valdivia.

Percentage of Sunny Days in September in Valdivia

The chart illustrates the percentage of sunny days in Valdivia 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 Valdivia experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec72%79%65%27%31%34%31%34%43%48%53%73%
Data source: Valdivia September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Valdivia in September

As September arrives in Valdivia, Chile, residents experience a gradual shift in daylight duration, with the sun gracing the sky for 11 hours. This marks a transition from the shorter days of winter, where daylight dwindles to as little as 9 hours in the peak months of June and July. As spring approaches, daylight begins to lengthen, foreshadowing the vivid brightness of summer, with January and December basking in a generous 14 hours of sunlight. This steady increase not only uplifts the spirits but also sets the stage for the vibrant blooms and outdoor activities that characterize the lovely months ahead.

Average Daylight Hours in Valdivia for September

The chart illustrates the variation in daylight duration in Valdivia throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 35m13h 34m12h 16m10h 58m9h 54m9h 22m9h 39m10h 36m11h 51m13h 9m14h 19m14h 55m
Data source: Valdivia daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Valdivia

In September, the winds in Valdivia, Chile begin to shift, with an average speed of 3.2 m/s (7 mph), marking a slight dip from the invigorating breezes of August at 4.4 m/s (10 mph). This month typically signals a transition as the tail end of winter fades, paving the way for the blossoming spring. The wind speed tends to oscillate throughout the year, peaking in August, yet overall, September maintains a gentle dynamism reminiscent of the late winter months. As the chill gradually recedes, this moderate wind sets the stage for vibrant changes in the landscape, inviting both locals and visitors to embrace the coming warmth.

Average September Wind Speed in Valdivia

The chart displays monthly wind speed patterns in Valdivia, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.03.33.12.73.63.93.14.43.2 m/s3.73.73.9
Data source: Valdivia September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Valdivia Compares to Other Months

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

In September, Valdivia experiences cooler temperatures with a minimum of 2°C (36°F) and an average of 9°C (49°F), peaking at a maximum of 20°C (68°F). The month is characterized by significant rainfall, accumulating 147 mm (5.8 in) over 12 days, contributing to a high humidity level of 82%. In contrast, January brings milder weather with minimum temperatures around 6°C (43°F), averaging 16°C (60°F), and reaching highs of 29°C (85°F). This summer month sees considerably less precipitation, with only 27 mm (1.1 in) falling over just 4 days, and a lower humidity of 69%. For more details, you can visit Valdivia weather in January.

September and February present contrasting weather patterns. In September, temperatures range from a chilly minimum of 2°C (36°F) to a comfortable maximum of 20°C (68°F), with an average of 9°C (49°F). This month is characterized by significant rainfall, totaling 147 mm (5.8 in) over approximately 12 days, coupled with high humidity at 82%. In contrast, February experiences much warmer temperatures, with a minimum of 7°C (45°F) and a maximum of 32°C (91°F), averaging 16°C (61°F). The precipitation is significantly lower in February, with only 31 mm (1.2 in) falling over about 3 days, and humidity dropping to 69%. For a more detailed overview, check out Valdivia weather in February.

September and March present distinct weather patterns. In September, temperatures range from a chilly minimum of 2°C (36°F) to an average of 9°C (49°F) and a maximum of 20°C (68°F), with an average humidity of 82%. This month also sees significant precipitation, accumulating to 147 mm (5.8 in) over approximately 12 days. In contrast, March offers a milder climate, with temperatures escalating from a minimum of 5°C (41°F) to an average of 14°C (58°F) and peaking at 27°C (80°F). The month is relatively drier, experiencing only 82 mm (3.2 in) of rain spread over 7 days and lower humidity at 70%. For more detailed weather information, you can visit Valdivia weather in March.

In comparing the weather between September and April, September tends to be cooler overall, with average temperatures ranging from a minimum of 2°C (36°F) to a maximum of 20°C (68°F), while April features slightly milder temperatures, averaging between 3°C (37°F) and 21°C (70°F). Precipitation levels are relatively high in both months, but September sees more rainfall at 147 mm (5.8 in) compared to April's 122 mm (4.8 in). Both months experience rain on approximately 12 days, but the higher humidity in September at 82% creates a more damp atmosphere than April's 77% humidity. For a closer look at Valdivia's specific April climate, you can check Valdivia weather in April.

When comparing September and May weather, September generally features a warmer average temperature ranging from a minimum of 2°C (36°F) to a maximum of 20°C (68°F), while May's temperatures range from a minimum of 0°C (33°F) to a maximum of 18°C (65°F). However, May tends to be wetter, with total precipitation of 197 mm (7.8 in) across 16 days compared to September's 147 mm (5.8 in) over 12 days. Additionally, both months experience high humidity, with May's humidity slightly higher at 86% versus September's 82%. For more detailed insights, you can visit Valdivia weather in May.

In comparing the weather of September and June, there are notable differences in temperature and precipitation patterns. September experiences a broader temperature range, with minimums around 2°C (36°F) and maximums reaching up to 20°C (68°F), resulting in an average of 9°C (49°F). In contrast, June sees slightly cooler conditions, with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 14°C (58°F), and an average temperature similar at 9°C (48°F).

However, June is significantly wetter, receiving 331 mm (13.0 in) of precipitation over 21 days, compared to September's 147 mm (5.8 in) spread over 12 days. Additionally, humidity levels are slightly higher in June at 86%, compared to 82% in September. For a more detailed look at June weather, you can visit Valdivia weather in June.

When comparing the weather in September and July, September typically experiences milder temperatures, with a minimum of 2°C (36°F), an average of 9°C (49°F), and a maximum of 20°C (68°F). In contrast, July is cooler, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 14°C (58°F). Precipitation is also notable in both months; however, July is wetter, receiving 263 mm (10.4 in) over 17 days, compared to September’s 147 mm (5.8 in) over 12 days. Additionally, July has slightly higher humidity levels at 86%, while September has 82%. For more details on July weather in Valdivia, you can visit Valdivia weather in July.

In comparing the weather between August and September, September shows a notable increase in maximum temperatures, reaching up to 20°C (68°F) compared to August's peak of 14°C (58°F). The average temperature also rises slightly from 8°C (47°F) in August to 9°C (49°F) in September. However, September experiences significantly less precipitation, totaling 147 mm (5.8 in) over 12 days, whereas August sees a much heavier rainfall of 279 mm (11.0 in) across 18 days, indicating a shift towards drier weather. Humidity levels remain relatively high in both months, with September at 82% and August at 86%. For more detailed insights, you can check Valdivia weather in August.

September and October present a gradual transition in weather patterns. In September, temperatures range from a minimum of 2°C (36°F) to a maximum of 20°C (68°F), with an average temperature of 9°C (49°F). This month experiences significant precipitation, totaling 147 mm (5.8 in) over 12 days, coupled with high humidity at 82%. In contrast, October sees a slight increase in average temperature to 10°C (51°F), with maximum temperatures reaching 22°C (71°F). Precipitation decreases to 129 mm (5.1 in) over 13 days, and humidity drops slightly to 78%. For more details, check out Valdivia weather in October.

In September, the weather typically starts off cool with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 20°C (68°F), averaging around 9°C (49°F). The month is characterized by significant rainfall, with 147 mm (5.8 in) of precipitation over 12 days and a high humidity level of 82%. In contrast, November experiences milder temperatures, with a minimum of 5°C (42°F) and a maximum of 22°C (72°F), averaging 13°C (55°F). Rainfall is also reduced in November, totaling 85 mm (3.4 in) over 9 days and accompanied by a lower humidity of 74%. For more detailed information, you can visit Valdivia weather in November.

In comparing the weather between September and December, it's evident that December experiences milder temperatures with a minimum of 7°C (44°F) and an average of 14°C (58°F), as opposed to September's cooler minimum of 2°C (36°F) and average of 9°C (49°F). The maximum temperatures in December can reach up to 28°C (82°F), significantly higher than September's maximum of 20°C (68°F). Additionally, December sees less precipitation, totaling only 49 mm (1.9 in) over 6 days, compared to September's 147 mm (5.8 in) spread over 12 days. Humidity levels are also lower in December at 70%, compared to a higher 82% in September. For more detailed information, you can check Valdivia weather in December.

Compare Valdivia's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Valdivia

As September unfolds in Valdivia, the weather begins to shift, marking a transition from the chill of winter to the more temperate days of spring. Temperatures gradually rise, bringing a refreshing warmth that is particularly welcomed after the colder months, yet they still hover around a brisk average, making it a perfect time for layering. With increased humidity lingering in the air and frequent precipitation, expect some rain showers during this period; unlike the drier summer months, September tends to be a reminder of Valdivia's lush environment. This dynamic weather can transform the landscape, enhancing its vibrant greenery and setting the stage for the blossoming spring. For a deeper understanding of Valdivia's diverse weather patterns throughout the year, explore Valdivia Climate.