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August Weather in Rancagua, Chile

Last updated: August 22, 2025

In August, the average temperature in Rancagua, Chile hovers around 8°C (47°F). Expect a wide range, with minimums dipping to -7°C (20°F) and maximums reaching 23°C (74°F). The weather is generally damp, with 88 mm (3.5 in) of precipitation over approximately 9 days and an average humidity of 79%.

August Temperature in Rancagua

In August in Rancagua, the average temperature is 8°C (47°F), with maximums reaching 23°C (74°F) and minimums dropping as low as -7°C (20°F). This range makes it essential for travelers to pack layers to adapt to the varying weather conditions.

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

The chart illustrates August temperature patterns in Rancagua, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rancagua, August typically has an average temperature of 8°C (47°F), with highs reaching up to 23°C (74°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec696864585145444751556267
Data source: Temperature data for Rancagua 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 Rancagua

In Rancagua in August, the precipitation amount is 88 mm (3.5 in) over the course of 9 days.

August Precipitation Trends in Rancagua

The chart displays monthly precipitation patterns in Rancagua, 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 Rancagua, August typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1869206015083886569197
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Rancagua

In Rancagua in August, humidity is 79%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while traveling.

August Average Humidity in Rancagua

This chart illustrates the average monthly humidity levels in Rancagua, 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 Rancagua is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec40%41%46%54%70%78%82%79%62%64%53%39%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Rancagua

In Rancagua in August, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Rancagua, you can refer to this Hourly UV Index in Rancagua.

Maximum UV Index Levels in Rancagua for August

The chart shows the monthly maximum UV Index (UVI) for Rancagua 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 Rancagua typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141311854468111314
Data source: Rancagua 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.

How August Weather in Rancagua Compares to Other Months

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

This table compares monthly weather conditions in Rancagua, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (69°F)18 mm (0.7 inches)40%extreme
February Weather20°C (68°F)6 mm (0.2 inches)41%extreme
March Weather18°C (64°F)9 mm (0.3 inches)46%extreme
April Weather14°C (58°F)20 mm (0.8 inches)54%very high
May Weather11°C (51°F)60 mm (2.3 inches)70%moderate
June Weather7°C (45°F)150 mm (5.9 inches)78%moderate
July Weather7°C (45°F)83 mm (3.3 inches)82%moderate
August Weather8°C (47°F)88 mm (3.5 inches)79%high
September Weather11°C (52°F)65 mm (2.5 inches)62%very high
October Weather13°C (55°F)69 mm (2.7 inches)64%extreme
November Weather17°C (62°F)19 mm (0.7 inches)53%extreme
December Weather19°C (67°F)7 mm (0.3 inches)39%extreme

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