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December Weather in Altamira, Mexico

Last updated: August 26, 2025

In December, the average temperature in Altamira, Mexico is a pleasant 21°C (70°F). Days can vary from a cool minimum of 8°C (47°F) to a warm maximum of 30°C (87°F). Be prepared for some light rain, as 18 mm (0.7 in) of precipitation is expected over 4 days. Additionally, stay comfortable with an average humidity of 89%!

December Temperature in Altamira

In December in Altamira, the average temperature is a pleasant 21°C (70°F), making it an ideal time for outdoor activities. The maximum can reach a warm 30°C (87°F), while the minimum can dip to a cool 8°C (47°F), so visitors should pack accordingly for both warm and cooler moments during their stay.

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

The chart illustrates December 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, December typically has an average temperature of 21°C (70°F), with highs reaching up to 30°C (87°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec687073788283838482797370
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.

December Precipitation in Altamira

In Altamira in December, the total precipitation amount is 18 mm (0.7 in) spread over a duration of 4 days.

December Precipitation Trends in Altamira

The chart displays monthly precipitation patterns in Altamira, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Altamira, December typically receives around 18 mm (0.7 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec4318322261141127871331113218
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Altamira

In Altamira in December, humidity is 89%. With an average temperature of 21°C (70°F), this humidity feels like a warm, heavy blanket wrapping around you, making travel feel sluggish and prompting you to seek occasional relief in shaded areas or air-conditioned spaces.

December Average Humidity in Altamira

This chart illustrates the average monthly humidity levels in Altamira, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Altamira is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%83%84%85%79%71%72%80%85%88%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Altamira

In Altamira in December, 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 Altamira, you can refer to this Hourly UV Index in Altamira.

Maximum UV Index Levels in Altamira for December

The chart shows the monthly maximum UV Index (UVI) for Altamira in December, 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 December, the maximum UV index in Altamira typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec79121212121312121086
Data source: Altamira December 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 December 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 December’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 December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (68°F)43 mm (1.7 inches)87%high
February Weather21°C (70°F)18 mm (0.7 inches)85%very high
March Weather23°C (74°F)32 mm (1.3 inches)83%extreme
April Weather25°C (78°F)22 mm (0.9 inches)84%extreme
May Weather28°C (82°F)61 mm (2.4 inches)85%extreme
June Weather28°C (84°F)141 mm (5.5 inches)79%extreme
July Weather28°C (83°F)127 mm (5.0 inches)71%extreme
August Weather29°C (84°F)87 mm (3.4 inches)72%extreme
September Weather28°C (83°F)133 mm (5.2 inches)80%extreme
October Weather26°C (79°F)111 mm (4.4 inches)85%very high
November Weather23°C (74°F)32 mm (1.3 inches)88%very high
December Weather21°C (70°F)18 mm (0.7 inches)89%high

Compare Altamira's Climate with Cities Worldwide