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May Weather in Santiago, Brazil

Last updated: August 22, 2025

In May, the average temperature in Santiago, Brazil hovers around 16°C (61°F). Expect some variability, with minimums dipping to 4°C (39°F) and maximums reaching up to 30°C (87°F). During this month, you'll encounter approximately 195 mm (7.7 in) of precipitation over 11 days, accompanied by an average humidity of 87%. Prepare for a mix of mild warmth and occasional rain!

May Temperature in Santiago

In May in Santiago, the average temperature is 16°C (61°F). Maximums can reach 30°C (87°F) and minimums can be as low as 4°C (39°F). Travelers should pack layers to comfortably enjoy both warm days and cooler evenings.

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

The chart illustrates May temperature patterns in Santiago, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santiago, May typically has an average temperature of 16°C (61°F), with highs reaching up to 30°C (87°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec777572686158575964677175
Data source: Temperature data for Santiago 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 Santiago

In Santiago in May, the precipitation amount is 195 mm (7.7 in) over a span of 11 days.

May Precipitation Trends in Santiago

The chart displays monthly precipitation patterns in Santiago, 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 Santiago, May typically receives around 195 mm (7.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec17610114610419511310311715017414389
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Santiago

In Santiago in May humidity is 87%. With an average temperature of 16°C (61°F), this humidity feels like a heavy blanket wrapping around you, making outdoor exploration sticky and uncomfortable, while also adding a thickness to the air that can sap your energy and enthusiasm for sightseeing.

May Average Humidity in Santiago

This chart illustrates the average monthly humidity levels in Santiago, 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 Santiago is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%73%73%81%87%84%80%71%74%78%77%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Santiago

In Santiago in May, 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 Santiago, you can refer to this Hourly UV Index in Santiago.

Maximum UV Index Levels in Santiago for May

The chart shows the monthly maximum UV Index (UVI) for Santiago 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 Santiago typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1514129655710131414
Data source: Santiago 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 Santiago Compares to Other Months

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

This table compares monthly weather conditions in Santiago, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)176 mm (6.9 inches)74%extreme
February Weather24°C (75°F)101 mm (4.0 inches)73%extreme
March Weather22°C (73°F)146 mm (5.7 inches)73%extreme
April Weather20°C (68°F)104 mm (4.1 inches)81%very high
May Weather16°C (61°F)195 mm (7.7 inches)87%high
June Weather15°C (59°F)113 mm (4.4 inches)84%moderate
July Weather14°C (57°F)103 mm (4.1 inches)80%moderate
August Weather15°C (60°F)116 mm (4.6 inches)71%high
September Weather18°C (64°F)150 mm (5.9 inches)74%very high
October Weather20°C (68°F)174 mm (6.9 inches)77%extreme
November Weather22°C (72°F)143 mm (5.6 inches)77%extreme
December Weather24°C (75°F)89 mm (3.5 inches)85%extreme

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