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December Weather in La Sirena, Mexico

Last updated: August 27, 2025

The average temperature in La Sirena, Mexico during December hovers around 21°C (71°F). Temperatures can vary, with a minimum of 12°C (54°F) and a maximum reaching 30°C (86°F). Expect some moisture with an average precipitation of 16 mm (0.6 in) spread over 5 days, and enjoy a comfortable average humidity level of 72%.

December Temperature in La Sirena

In December in La Sirena, the average temperature is 21°C (71°F), with maximums that can reach 30°C (86°F) and minimums that can drop to as low as 12°C (54°F). This temperate climate makes La Sirena an ideal destination for outdoor activities and exploration during this time of year.

December Weather in La Sirena: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in La Sirena, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Sirena, December typically has an average temperature of 21°C (71°F), with highs reaching up to 30°C (86°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec707173757573737373737270
Data source: Temperature data for La Sirena 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 La Sirena

In La Sirena in December, the precipitation amount is 16 mm (0.6 in) spread over a duration of 5 days.

December Precipitation Trends in La Sirena

The chart displays monthly precipitation patterns in La Sirena, 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 La Sirena, December typically receives around 16 mm (0.6 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec20920402005443565337066474816
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in La Sirena

In La Sirena in December, humidity is 72%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, creating a thick, sultry atmosphere that can be quite heavy for traveling.

December Average Humidity in La Sirena

This chart illustrates the average monthly humidity levels in La Sirena, 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 La Sirena is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec67%66%63%66%71%74%78%78%77%77%75%72%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in La Sirena

In La Sirena in December, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in La Sirena.

Maximum UV Index Levels in La Sirena for December

The chart shows the monthly maximum UV Index (UVI) for La Sirena 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 La Sirena typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141414131412109
Data source: La Sirena 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 La Sirena Compares to Other Months

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

This table compares monthly weather conditions in La Sirena, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (71°F)20 mm (0.8 inches)67%very high
February Weather22°C (72°F)9 mm (0.4 inches)66%extreme
March Weather23°C (74°F)20 mm (0.8 inches)63%extreme
April Weather24°C (75°F)39 mm (1.6 inches)66%extreme
May Weather24°C (75°F)200 mm (7.9 inches)71%extreme
June Weather23°C (74°F)544 mm (21.4 inches)73%extreme
July Weather23°C (74°F)356 mm (14.0 inches)78%extreme
August Weather23°C (73°F)533 mm (21.0 inches)78%extreme
September Weather23°C (73°F)706 mm (27.8 inches)77%extreme
October Weather23°C (73°F)647 mm (25.5 inches)77%extreme
November Weather22°C (72°F)48 mm (1.9 inches)75%very high
December Weather21°C (71°F)16 mm (0.6 inches)72%very high

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