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December Weather in Petacalco, Mexico

Last updated: August 27, 2025

The average temperature in Petacalco, Mexico during December is a comfortable 26°C (78°F). Visitors can expect temperatures to range from a minimum of 20°C (68°F) to a maximum of 32°C (91°F). With only 4 mm (0.2 in) of precipitation over 0 days, and an average humidity of 70%, it's the perfect time to enjoy all that this beautiful destination has to offer!

December Temperature in Petacalco

In December in Petacalco, the average temperature is 26°C (78°F). Maximums can reach 32°C (91°F), and minimums can be as low as 20°C (68°F). This pleasant climate makes it an ideal time for traveling, allowing visitors to enjoy outdoor activities and comfortable evenings.

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

The chart illustrates December temperature patterns in Petacalco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Petacalco, December typically has an average temperature of 26°C (78°F), with highs reaching up to 32°C (91°F) and lows dropping to around 20°C (68°F).
JanFebMarAprMayJunJulAugSepOctNovDec777777777981838281818078
Data source: Temperature data for Petacalco 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 Petacalco

In Petacalco in December, the precipitation amount is 4 mm (0.2 in) over the course of 0 days.

December Precipitation Trends in Petacalco

The chart displays monthly precipitation patterns in Petacalco, 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 Petacalco, December typically receives around 4 mm (0.2 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec42107188102250265234475
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Petacalco

In Petacalco in December humidity is 70%. With an average temperature of 26°C (78°F), this humidity feels like a warm embrace, making outdoor activities slightly sticky and encouraging travelers to stay hydrated while exploring.

December Average Humidity in Petacalco

This chart illustrates the average monthly humidity levels in Petacalco, 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 Petacalco is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec66%64%63%69%73%76%78%79%78%75%72%70%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Petacalco

In Petacalco in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Petacalco.

Maximum UV Index Levels in Petacalco for December

The chart shows the monthly maximum UV Index (UVI) for Petacalco 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 Petacalco typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131313141312131198
Data source: Petacalco 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 Petacalco Compares to Other Months

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

This table compares monthly weather conditions in Petacalco, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (78°F)4 mm (0.2 inches)66%very high
February Weather25°C (77°F)2 mm (0.1 inches)64%extreme
March Weather25°C (78°F)1 mm (0.0 inches)63%extreme
April Weather25°C (78°F)0 mm (0.0 inches)69%extreme
May Weather26°C (80°F)7 mm (0.3 inches)73%extreme
June Weather27°C (81°F)188 mm (7.4 inches)76%extreme
July Weather28°C (83°F)102 mm (4.0 inches)78%extreme
August Weather28°C (82°F)250 mm (9.9 inches)79%extreme
September Weather27°C (81°F)265 mm (10.4 inches)78%extreme
October Weather27°C (81°F)234 mm (9.2 inches)75%extreme
November Weather27°C (80°F)47 mm (1.8 inches)72%very high
December Weather26°C (78°F)4 mm (0.2 inches)70%very high

Compare Petacalco's Climate with Cities Worldwide