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December Weather in El Salvador, Mexico

Last updated: August 27, 2025

In December, the average temperature in El Salvador, Mexico hovers around 12°C (54°F). Visitors should be prepared for a temperature range that can dip to a chilly -5°C (23°F) and soar up to a warm 27°C (81°F). During this month, expect about 27 mm (1.1 in) of precipitation over approximately 3 days, with an average humidity level of around 80%.

December Temperature in El Salvador

In December in El Salvador, the average temperature is 12°C (54°F). Maximums can reach 27°C (81°F) and minimums can be as low as -5°C (23°F). Therefore, it's advisable to pack layers for your travels to El Salvador, as the weather can vary significantly throughout the day.

December Weather in El Salvador: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in El Salvador, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In El Salvador, December typically has an average temperature of 12°C (54°F), with highs reaching up to 27°C (81°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec535863677070696967655954
Data source: Temperature data for El Salvador 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 El Salvador

In El Salvador in December, the total precipitation amount is 27 mm (1.1 in) over the course of 3 days.

December Precipitation Trends in El Salvador

The chart displays monthly precipitation patterns in El Salvador, 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 El Salvador, December typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec151223325240682059221127
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in El Salvador

In El Salvador in December, humidity is 80%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket that wraps around you, making it feel much cooler and damp. Traveling in these conditions might leave you feeling chilly and slightly uncomfortable, as the moisture in the air clings to your skin and clothes, turning each step into a soggy endeavor.

December Average Humidity in El Salvador

This chart illustrates the average monthly humidity levels in El Salvador, 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 El Salvador is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%70%65%59%66%71%57%58%73%76%81%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in El Salvador

In El Salvador 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 El Salvador.

Maximum UV Index Levels in El Salvador for December

The chart shows the monthly maximum UV Index (UVI) for El Salvador 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 El Salvador typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810131414141414131297
Data source: El Salvador 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 El Salvador Compares to Other Months

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

This table compares monthly weather conditions in El Salvador, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (53°F)15 mm (0.6 inches)75%very high
February Weather14°C (58°F)12 mm (0.5 inches)70%very high
March Weather17°C (63°F)23 mm (0.9 inches)65%extreme
April Weather19°C (67°F)32 mm (1.3 inches)59%extreme
May Weather21°C (70°F)52 mm (2.0 inches)66%extreme
June Weather21°C (71°F)40 mm (1.6 inches)71%extreme
July Weather21°C (69°F)68 mm (2.7 inches)57%extreme
August Weather21°C (69°F)19 mm (0.8 inches)58%extreme
September Weather19°C (67°F)59 mm (2.3 inches)72%extreme
October Weather18°C (65°F)22 mm (0.9 inches)76%extreme
November Weather15°C (59°F)11 mm (0.4 inches)81%very high
December Weather12°C (54°F)27 mm (1.1 inches)80%high

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