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December Weather in La Union, El Salvador

Last updated: August 23, 2025

In December, the average temperature in La Union, El Salvador reaches a warm 28°C (82°F), with a comfortable range from 24°C (75°F) to a maximum of 32°C (89°F). Expect minimal rain, with only 3 mm (0.1 in) of precipitation over 0 days, complemented by an average humidity of 66%. Enjoy the pleasant climate!

December Temperature in La Union

In December in La Union, the average temperature is 28°C (82°F). Maximums can reach 32°C (89°F), and minimums can be as low as 24°C (75°F). This pleasant climate makes La Union an ideal destination for travelers seeking warmth and outdoor activities.

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

The chart illustrates December temperature patterns in La Union, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Union, December typically has an average temperature of 28°C (82°F), with highs reaching up to 32°C (89°F) and lows dropping to around 24°C (75°F).
JanFebMarAprMayJunJulAugSepOctNovDec828283838282848382818282
Data source: Temperature data for La Union 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 Union

In La Union in December, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.

December Precipitation Trends in La Union

The chart displays monthly precipitation patterns in La Union, 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 Union, December typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec2343727633576259314431593
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in La Union

In La Union in December, humidity is 66%. With an average temperature of 28°C (82°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities feel sticky and draining, so travelers should stay hydrated and take regular breaks in the shade.

December Average Humidity in La Union

This chart illustrates the average monthly humidity levels in La Union, 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 Union is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec63%62%59%59%59%68%78%79%77%77%75%67%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in La Union

In La Union 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 Union.

Maximum UV Index Levels in La Union for December

The chart shows the monthly maximum UV Index (UVI) for La Union 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 Union typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141413131313109
Data source: La Union 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 Union Compares to Other Months

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

This table compares monthly weather conditions in La Union, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather28°C (82°F)2 mm (0.1 inches)63%very high
February Weather28°C (82°F)3 mm (0.1 inches)62%extreme
March Weather28°C (83°F)4 mm (0.2 inches)59%extreme
April Weather28°C (83°F)37 mm (1.5 inches)59%extreme
May Weather28°C (83°F)275 mm (10.8 inches)59%extreme
June Weather28°C (83°F)335 mm (13.2 inches)68%extreme
July Weather29°C (85°F)76 mm (3.0 inches)77%extreme
August Weather28°C (83°F)259 mm (10.2 inches)79%extreme
September Weather28°C (82°F)314 mm (12.3 inches)77%extreme
October Weather27°C (81°F)431 mm (17.0 inches)77%extreme
November Weather28°C (83°F)59 mm (2.3 inches)75%very high
December Weather28°C (82°F)3 mm (0.1 inches)66%very high

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