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May Weather in Rancagua, Chile

Last updated: August 22, 2025

In May, the average temperature in Rancagua, Chile hovers around 11°C (51°F), creating a pleasant climate for visitors. While you may experience minimum temperatures dipping to -3°C (27°F), daytime highs can reach a comfortable 26°C (79°F). Expect 60 mm (2.3 in) of precipitation spread over approximately 6 days, accompanied by an average humidity level of 70%. Be prepared for a mix of weather—perfect for exploring!

May Temperature in Rancagua

In May in Rancagua, the average temperature is 11°C (51°F). Maximums can reach 26°C (79°F), while minimums can drop to as low as -3°C (27°F). Be prepared for a mix of mild days and chilly nights if you plan to visit during this time.

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

The chart illustrates May 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, May typically has an average temperature of 11°C (51°F), with highs reaching up to 26°C (79°F) and lows dropping to around -3°C (27°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.

May Precipitation in Rancagua

In Rancagua, in May, the precipitation amount is 60 mm (2.3 in) over a span of 6 days.

May Precipitation Trends in Rancagua

The chart displays monthly precipitation patterns in Rancagua, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Rancagua, May typically receives around 60 mm (2.3 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec1869206015083886569197
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Rancagua

In Rancagua in May, humidity is 70%. With an average temperature of 11°C (51°F), this humidity feels like a moist chill that seeps into your bones, making outdoor excursions feel damp and slightly uncomfortable for traveling.

May Average Humidity in Rancagua

This chart illustrates the average monthly humidity levels in Rancagua, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Rancagua is approximately 70%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Rancagua

In Rancagua in May, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Rancagua.

Maximum UV Index Levels in Rancagua for May

The chart shows the monthly maximum UV Index (UVI) for Rancagua in May, 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 May, the maximum UV index in Rancagua typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141311854468111314
Data source: Rancagua May 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 May 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 May’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 May’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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