August Weather in Castro, Chile

Last updated: August 21, 2025

In August, the weather in Castro, Chile showcases a unique blend of cool temperatures and high humidity. With maximum temperatures reaching 15°C (59°F) and an average of 7°C (46°F), chilly days are common, occasionally dipping to a minimum of -3°C (27°F) during the night. The region experiences significant precipitation, accumulating 209 mm (8.2 in) over approximately 20 days, making it a particularly wet month. Coupled with an impressive humidity of 87%, visitors should be prepared for damp and brisk conditions that characterize this time of year in Castro.

August Temperature in Castro

In August, Castro, Chile, experiences a chill that marks the heart of winter, with temperatures typically ranging from a brisk -3°C (27°F) at night to a mild 15°C (59°F) during the day. The average daytime temperature hovers around 7°C (46°F), a significant drop from the warmer summer months. As the season progresses into late winter, temperatures begin to stabilize, hinting at the approaching spring. While cold conditions dominate, the gradual climb in daytime highs signals a gentle transition, with locals and visitors alike enjoying the crisp air and occasional sunshine. The shift towards milder temperatures in August sets the stage for a vibrant Chilean spring just around the corner.

August Weather in Castro: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Castro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castro, August 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).
JanFebMarAprMayJunJulAugSepOctNovDec585955524845444547495357
Data source: Temperature data for Castro 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.

August Precipitation in Castro

In August, Castro, Chile experiences a significant peak in precipitation, recording 209 mm (8.2 in) of rain over 20 days, making it one of the wettest months of the year. This trend follows a steady increase in rainfall from the relatively mild conditions of January to July, where precipitation cumulatively climbs from 49 mm to 165 mm. Notably, the rainfall in August is not only the highest recorded for the month but also slightly surpasses the deluge of the previous month, July. This pattern underscores August's pivotal role in the region's rainy season, setting the stage for the gradual decline in precipitation that follows in September, where rainfall drops to 135 mm (5.3 in). As winter transitions to spring, the rainy days begin to decrease, hinting at an ebbing of the intense downpour that characterizes the colder months.

August Precipitation Trends in Castro

The chart displays monthly precipitation patterns in Castro, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Castro, August typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec49408312317320716520913513210769
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Castro

In August, humidity in Castro, Chile remains notably high at 87%, mirroring the levels of the previous month and continuing a persistent trend of elevated moisture in the air. From January through July, the region has experienced consistently humid conditions, with percentages ranging from 82% to 87%. This prolonged period of humidity peaks in August, contributing to a lush, vibrant landscape that characterizes Castro during its winter months. As the seasons transition towards spring, the humidity only slightly decreases in September to 86%, indicating that moisture continues to play a significant role in shaping the climate of this picturesque coastal city. The overall trend indicates a stable atmospheric condition throughout the winter months, enhancing not just the natural beauty but potentially influencing local agriculture and outdoor activities.

August Average Humidity in Castro

This chart illustrates the average monthly humidity levels in Castro, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Castro is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%85%82%87%87%86%87%87%86%84%82%84%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Castro

In August, Castro experiences a moderate UV Index of 4, resulting in a burn time of about 30 minutes for fair-skinned individuals. This marks a slight increase from the low UV levels of the previous two months, reflecting the gradual transition toward spring. While still manageable, the rising index emphasizes the need for sun protection as days become longer and sunnier. As observed throughout the year, Castro’s UV exposure fluctuates significantly, with peaks in summer months where readings soar to extremes. To stay updated on these trends, be sure to check the comprehensive information available at Castro UV Index.

Maximum UV Index Levels in Castro for August

The chart shows the monthly maximum UV Index (UVI) for Castro in August, 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 August, the maximum UV index in Castro typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1312963224681313
Data source: Castro August 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.

August Sunshine in Castro

In August, Castro, Chile, basks in a modest 193 hours of sunshine, marking a gradual transition from the colder months. Following the cool, overcast days of winter, this month stands out as a herald of spring, witnessing a gentle increase in daylight compared to the preceding months. While sunlight hours remain lower than the vibrant intensity of summer months like January and February, August serves as a refreshing bridge, hinting at the brighter days ahead. As the sunlight begins to coax nature back to life, it's the perfect time to explore the region's stunning landscapes before the sun-soaked heights of late spring and summer emerge.

Monthly Sunshine Duration in Castro: August Highlighted

The August sunshine duration represents the total number of hours Castro experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec284h306h301h216h189h141h175h193h243h281h290h346h
Data source: Castro August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Castro During August

August in Castro, Chile, presents a limited likelihood of sunny weather, with only a 25% chance of sunshine. This trend follows a noticeable decline in daylight hours and warmth as the year progresses, particularly from the vibrant summer months of January (47%) and February (65%), down through the cooler winter period. As autumn approaches, the chances of sun continue to dwindle, making August one of the less favorable months for basking in the sun. While the weather may not always cooperate, those who visit can still enjoy the lush landscapes and cultural vibrancy that define this charming region during the cooler season.

Percentage of Sunny Days in August in Castro

The chart illustrates the percentage of sunny days in Castro throughout the year, with August 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 Castro experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec47%65%50%17%28%33%24%25%30%36%31%53%
Data source: Castro August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Castro in August

In Castro, Chile, the ebb and flow of daylight reveals a distinct seasonal rhythm. In August, the daylight spans 10 hours, marking a subtle transition from the shorter days of winter. As the year progresses, daylight gradually increases, peaking in the summer months of December with an impressive 15 hours. Following this zenith, the days begin to shorten again, reaching their trough in June and July, where daylight is confined to just 9 hours. This cyclical pattern illustrates the enchanting dance between light and darkness, inviting residents and visitors alike to embrace the distinct flavors of each season.

Average Daylight Hours in Castro for August

The chart illustrates the variation in daylight duration in Castro throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 52m13h 43m12h 18m10h 51m9h 40m9h 4m9h 24m10h 27m11h 49m13h 16m14h 34m15h 14m
Data source: Castro daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Castro

In August, the winds in Castro, Chile, pick up slightly, with an average speed of 3.3 m/s (7 mph), marking a notable increase compared to the preceding months. This gentle surge in wind speed heralds the transition towards the spring season, contrasting with the milder 2.4 m/s (5 mph) experienced in January and February. Throughout the year, wind speeds exhibit subtle fluctuations, peaking in late summer before dipping again in the early fall. Despite the variability, a consistent windiness remains a hallmark of Castro’s climate, making August a refreshing interlude before the calmer days of September.

Average August Wind Speed in Castro

The chart displays monthly wind speed patterns in Castro, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.72.52.63.02.92.93.3 m/s2.82.92.62.9
Data source: Castro August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Castro Compares to Other Months

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

In August, the weather tends to be quite cool, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 15°C (59°F) and an average of 7°C (46°F). This month is marked by significant precipitation, totaling 209 mm (8.2 in) over about 20 days, paired with high humidity at 87%. In contrast, January features much milder conditions, with temperatures varying from a minimum of 2°C (37°F) to a maximum of 29°C (84°F) and an average of 14°C (58°F). Precipitation is significantly lower in January, with only 49 mm (1.9 in) occurring over about 9 days, and humidity slightly less at 83%. For more detailed insights into January's climate in Castro, you can visit Castro weather in January.

When comparing the weather between August and February, there is a notable contrast in temperatures and rainfall. August experiences a chilly range, with minimum temperatures dropping to -3°C (27°F) and averaging around 7°C (46°F), while the maximum reaches only up to 15°C (59°F). In contrast, February boasts much warmer conditions, with minimums of 4°C (40°F) and averages soaring to 15°C (60°F), peaking at a scorching 35°C (95°F). Moreover, August is significantly wetter, receiving 209 mm (8.2 in) of precipitation over 20 days, compared to February's modest 40 mm (1.6 in) over just 6 days. The humidity levels remain fairly consistent, with August at 87% and February slightly lower at 85%. For a detailed outlook on February weather specifically, check out Castro weather in February.

In comparing the weather between August and March, notable differences emerge in both temperature and precipitation. August sees cooler overall temperatures, with a minimum of -3°C (27°F) and an average of 7°C (46°F), peaking at 15°C (59°F), while March enjoys warmer conditions, ranging from a minimum of 2°C (36°F) to a maximum of 29°C (84°F) and an average of 13°C (56°F). Additionally, August is significantly wetter, with 209 mm (8.2 in) of precipitation over 20 days, compared to March's 82 mm (3.2 in) spread over just 11 days. Humidity levels are relatively high in both months, with August at 87% and March at 82%. For more detailed insights into the weather in March, you can explore Castro weather in March.

In comparing the weather conditions between August and April, there are notable differences in temperature and precipitation. August experiences colder temperatures, with a minimum of -3°C (27°F) and an average of 7°C (46°F), while April offers a milder climate with temperatures ranging from a minimum of -1°C (31°F) and an average of 11°C (52°F) up to a maximum of 22°C (72°F). Precipitation is significantly higher in August, with 209 mm (8.2 in) falling over 20 days, compared to April's 123 mm (4.8 in) over 15 days. Despite both months having similar humidity levels at 87%, April generally feels more pleasant due to its warmer temperatures. For more detailed information, check out Castro weather in April.

August and May exhibit notable differences in weather conditions. August tends to be cooler, with average temperatures around 7°C (46°F) compared to May's average of 9°C (49°F). The maximum temperatures in August reach only 15°C (59°F), while May sees warmer maxes of 18°C (65°F). Additionally, August experiences more precipitation, totaling 209 mm (8.2 in) over 20 days, compared to May's 173 mm (6.8 in) over 17 days. Despite both months having the same humidity level of 87%, the overall climate in May is generally milder and less wet. For a more detailed look at May's weather, you can check Castro weather in May.

When comparing the weather in August and June, we find some interesting similarities and subtle differences. Both months feature a minimum temperature of around -3°C (27°F), with average temperatures hovering around 7°C (46°F) and maximums reaching 15°C (59°F to 60°F). Precipitation levels are quite similar as well, with August receiving 209 mm (8.2 in) over 20 days and June slightly less at 207 mm (8.2 in) over 21 days. Humidity remains high in both months, at 87% in August compared to 86% in June. For more detailed insights about June's weather, you can visit Castro weather in June.

In comparing the weather between July and August, both months exhibit similar temperature ranges, with minimums dipping to -3°C (27°F) and average temperatures around 7°C. However, August is slightly warmer, with a maximum average of 15°C (59°F), compared to July's peak of 13°C (56°F). Precipitation levels also increase in August, accumulating 209 mm (8.2 in) over 20 days, while July sees 165 mm (6.5 in) over 18 days. Interestingly, humidity remains constant at 87% throughout both months, contributing to a consistently damp atmosphere. For more detailed information about July's weather, check out Castro weather in July.

August and September present a notable transition in weather conditions. In August, temperatures range from a minimum of -3°C (27°F) to a maximum of 15°C (59°F), with an average temperature of 7°C (46°F). The month experiences considerable precipitation, with 209 mm (8.2 in) over 20 days, resulting in high humidity levels at 87%. In contrast, September brings slightly warmer temperatures, with a minimum of -1°C (30°F) and a maximum of 19°C (66°F), and an average of 8°C (47°F). Rainfall decreases to 135 mm (5.3 in) over 16 days, reflecting a slight drop in humidity to 86%. For more details on September weather in Castro, you can visit Castro weather in September.

In comparing the weather between August and October, we can see some notable differences. August experiences chilly temperatures, with a minimum of -3°C (27°F) and an average of 7°C (46°F), while October offers a milder climate, featuring a minimum of -3°C (27°F) but with a higher average of 9°C (49°F) and a maximum reaching 22°C (72°F). Precipitation in August is quite significant at 209 mm (8.2 in) over 20 days, compared to October's 132 mm (5.2 in) across 18 days, indicating drier conditions in the latter month. Additionally, humidity slightly decreases from 87% in August to 84% in October, making October feel more comfortable overall. For more specific details, you can check Castro weather in October.

In August, the weather is significantly cooler, with average temperatures ranging from a chilly -3°C (27°F) to a maximum of 15°C (59°F). The month is quite wet, receiving 209 mm (8.2 inches) of precipitation over 20 days, coupled with high humidity levels at 87%. In contrast, November brings warmer conditions, showcasing an average temperature span of 2°C (35°F) to 24°C (76°F) with a notably lower total precipitation of 107 mm (4.2 inches) across 13 days. Humidity also decreases slightly to 82%. For a closer look at the weather patterns during this month, check out Castro weather in November.

August and December present quite contrasting weather patterns. In August, temperatures are notably cooler, with minimums around -3°C (27°F) and a maximum of 15°C (59°F), while December enjoys milder conditions, ranging from a minimum of 4°C (40°F) to a maximum of 29°C (84°F). Precipitation levels are significantly higher in August, with 209 mm (8.2 in) over 20 days, compared to just 69 mm (2.7 in) across 12 days in December. Humidity levels are relatively similar, with August at 87% and December slightly lower at 84%. For more detailed information, you can visit Castro weather in December.

Compare Castro's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Castro

As August arrives in Castro, the weather takes on a distinctly chillier and wetter character compared to the warmer and drier months of summer. With temperatures often hovering around a brisk 7°C (46°F), the air carries a noticeable chill, particularly in the early mornings and evenings. The month is marked by a significant increase in precipitation, averaging 209 mm (8.2 in) across 20 days, which adds a lush vibrancy to the landscape. Coupled with high humidity levels of 87%, August truly stands out as a month of transition, setting the stage for the incoming spring with its refreshing rains. For a deeper understanding of Castro's evolving climate, explore Castro Climate.