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December Weather in Las Mercedes, Mexico

Last updated: August 26, 2025

In December, the average temperature in Las Mercedes, Mexico hovers around 16°C (61°F). However, be prepared for temperature fluctuations, as the minimum can drop to -1°C (31°F), while the maximum can rise up to 31°C (89°F). Expect about 11 mm (0.4 in) of precipitation over the course of a single day, complemented by an average humidity level of 84%.

December Temperature in Las Mercedes

In December in Las Mercedes, the average temperature is 16°C (61°F). Maximum temperatures can reach 31°C (89°F), while minimums can drop as low as -1°C (31°F). Be prepared for a wide range of temperatures when traveling during this time!

December Weather in Las Mercedes: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Las Mercedes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Las Mercedes, December typically has an average temperature of 16°C (61°F), with highs reaching up to 31°C (89°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec596672788586858581756761
Data source: Temperature data for Las Mercedes 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 Las Mercedes

In Las Mercedes in December, the precipitation amount is 11 mm (0.4 in) over the course of one day.

December Precipitation Trends in Las Mercedes

The chart displays monthly precipitation patterns in Las Mercedes, 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 Las Mercedes, December typically receives around 11 mm (0.4 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec456141423133729611
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Las Mercedes

In Las Mercedes in December, humidity is 84%. With an average temperature of 16°C (61°F), this humidity feels like a blanket of warmth, making travel slightly sticky but overall comfortable, as long as you stay hydrated and take breaks in the shade.

December Average Humidity in Las Mercedes

This chart illustrates the average monthly humidity levels in Las Mercedes, 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 Las Mercedes is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%62%53%48%52%64%73%71%82%83%82%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Las Mercedes

In Las Mercedes in December, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Las Mercedes.

Maximum UV Index Levels in Las Mercedes for December

The chart shows the monthly maximum UV Index (UVI) for Las Mercedes 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 Las Mercedes typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710121313131313131187
Data source: Las Mercedes 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 Las Mercedes Compares to Other Months

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

This table compares monthly weather conditions in Las Mercedes, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (60°F)4 mm (0.2 inches)70%high
February Weather19°C (66°F)5 mm (0.2 inches)62%very high
March Weather22°C (72°F)6 mm (0.3 inches)53%extreme
April Weather26°C (79°F)1 mm (0.0 inches)48%extreme
May Weather29°C (85°F)4 mm (0.2 inches)52%extreme
June Weather30°C (87°F)14 mm (0.5 inches)64%extreme
July Weather29°C (85°F)23 mm (0.9 inches)73%extreme
August Weather30°C (86°F)13 mm (0.5 inches)71%extreme
September Weather27°C (81°F)37 mm (1.4 inches)82%extreme
October Weather24°C (76°F)28 mm (1.1 inches)83%extreme
November Weather19°C (67°F)6 mm (0.2 inches)82%very high
December Weather16°C (61°F)11 mm (0.4 inches)84%high

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