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May Weather in Altamira, Brazil

Last updated: August 22, 2025

In Altamira, Brazil, the average temperature in May hovers around 26°C (80°F), with minimums dipping to 22°C (72°F) and maximums reaching a warm 33°C (91°F). Be prepared for a wet month as precipitation averages 175 mm (6.9 in) over approximately 26 days, coupled with a notably high average humidity of 90%.

May Temperature in Altamira

In May in Altamira, the average temperature is 26°C (80°F), with maximums reaching up to 33°C (91°F) and minimums dropping as low as 22°C (72°F). This pleasant weather makes it an ideal time for travelers to explore and enjoy outdoor activities in Altamira.

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

The chart illustrates May temperature patterns in Altamira, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Altamira, May typically has an average temperature of 26°C (80°F), with highs reaching up to 33°C (91°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec787879798080818283838280
Data source: Temperature data for Altamira 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 Altamira

In Altamira in May, the precipitation amount reaches 175 mm (6.9 in) over the course of 26 days.

May Precipitation Trends in Altamira

The chart displays monthly precipitation patterns in Altamira, 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 Altamira, May typically receives around 175 mm (6.9 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec2232722812931756234363441134202
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Altamira

In Altamira in May humidity is 90%. With an average temperature of 26°C (80°F), this humidity feels like a heavy blanket enveloping you, making travel seem sticky and exhausting, as each step becomes a challenge against the weight of the air.

May Average Humidity in Altamira

This chart illustrates the average monthly humidity levels in Altamira, 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 Altamira is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%69%70%85%90%83%66%51%47%46%46%70%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Altamira

In Altamira in May, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Altamira.

Maximum UV Index Levels in Altamira for May

The chart shows the monthly maximum UV Index (UVI) for Altamira 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 Altamira typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151516161311111212121413
Data source: Altamira 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 Altamira Compares to Other Months

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

This table compares monthly weather conditions in Altamira, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)223 mm (8.8 inches)85%extreme
February Weather26°C (79°F)271 mm (10.7 inches)69%extreme
March Weather26°C (79°F)281 mm (11.1 inches)70%extreme
April Weather26°C (79°F)293 mm (11.5 inches)85%extreme
May Weather26°C (80°F)175 mm (6.9 inches)90%extreme
June Weather27°C (80°F)62 mm (2.5 inches)82%extreme
July Weather27°C (81°F)34 mm (1.3 inches)66%extreme
August Weather28°C (83°F)36 mm (1.4 inches)51%extreme
September Weather28°C (83°F)34 mm (1.3 inches)47%extreme
October Weather28°C (84°F)41 mm (1.6 inches)46%extreme
November Weather28°C (82°F)134 mm (5.3 inches)46%extreme
December Weather27°C (80°F)202 mm (8.0 inches)70%extreme

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