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May Weather in Puerto Callao, Peru

Last updated: August 27, 2025

In May, the average temperature in Puerto Callao, Peru hovers around 26°C (79°F). Temperatures can fluctuate significantly, with a minimum of 17°C (64°F) and a maximum soaring to 34°C (94°F). Expect a fair amount of rain, with 172 mm (6.8 in) of precipitation over approximately 18 days. The atmosphere remains humid, with an average humidity level of 82%.

May Temperature in Puerto Callao

In May in Puerto Callao, the average temperature is 26°C (79°F). Maximums can reach 34°C (94°F), while minimums can be as low as 17°C (64°F). This pleasant weather makes it an ideal time for outdoor activities and exploration.

May Weather in Puerto Callao: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Puerto Callao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Puerto Callao, May typically has an average temperature of 26°C (79°F), with highs reaching up to 34°C (94°F) and lows dropping to around 17°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec808080807979788081818180
Data source: Temperature data for Puerto Callao 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 Puerto Callao

In Puerto Callao in May, the precipitation amount is 172 mm (6.8 in) during 18 days, indicating a relatively wet period for the area.

May Precipitation Trends in Puerto Callao

The chart displays monthly precipitation patterns in Puerto Callao, 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 Puerto Callao, May typically receives around 172 mm (6.8 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec2673153912771721039788137192282278
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Puerto Callao

In Puerto Callao in May, humidity is 82%. With an average temperature of 26°C (79°F), this humidity feels like a warm blanket that envelops you, making outdoor activities feel more taxing and requiring frequent breaks to stay hydrated.

May Average Humidity in Puerto Callao

This chart illustrates the average monthly humidity levels in Puerto Callao, 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 Puerto Callao is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%86%88%82%67%48%39%40%51%74%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Puerto Callao

In Puerto Callao in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Puerto Callao.

Maximum UV Index Levels in Puerto Callao for May

The chart shows the monthly maximum UV Index (UVI) for Puerto Callao 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 Puerto Callao typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616151211111214151514
Data source: Puerto Callao 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 Puerto Callao Compares to Other Months

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

This table compares monthly weather conditions in Puerto Callao, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)267 mm (10.5 inches)85%extreme
February Weather27°C (80°F)315 mm (12.4 inches)82%extreme
March Weather26°C (80°F)391 mm (15.4 inches)86%extreme
April Weather26°C (80°F)276 mm (10.9 inches)88%extreme
May Weather26°C (79°F)172 mm (6.8 inches)82%extreme
June Weather26°C (79°F)103 mm (4.1 inches)67%extreme
July Weather26°C (79°F)97 mm (3.8 inches)48%extreme
August Weather26°C (80°F)88 mm (3.5 inches)39%extreme
September Weather27°C (81°F)136 mm (5.4 inches)40%extreme
October Weather27°C (81°F)192 mm (7.6 inches)51%extreme
November Weather27°C (81°F)282 mm (11.1 inches)74%extreme
December Weather27°C (81°F)278 mm (10.9 inches)89%extreme

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