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December Weather in Usulutan, El Salvador

Last updated: August 23, 2025

In December, the average temperature in Usulutan, El Salvador hovers around 27°C (81°F), creating a pleasantly warm atmosphere. You can expect a minimum temperature of 22°C (71°F) and a maximum reaching up to 34°C (93°F). Keep in mind that there may be 4 mm (0.2 in) of precipitation over the course of just 1 day, contributing to an average humidity level of 66%.

December Temperature in Usulutan

In December in Usulutan, the average temperature is 27°C (81°F). Maximums can reach 34°C (93°F), while minimums can drop to 22°C (71°F). This makes Usulutan an ideal destination for travelers seeking warm weather and pleasant conditions.

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

The chart illustrates December temperature patterns in Usulutan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Usulutan, December typically has an average temperature of 27°C (81°F), with highs reaching up to 34°C (93°F) and lows dropping to around 22°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec818284848382838281818181
Data source: Temperature data for Usulutan 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 Usulutan

In Usulutan in December, the precipitation amount is 4 mm (0.2 in) during 1 day.

December Precipitation Trends in Usulutan

The chart displays monthly precipitation patterns in Usulutan, 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 Usulutan, December typically receives around 4 mm (0.2 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec13725230353141275280409814
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Usulutan

In Usulutan in December, humidity is 66%. With an average temperature of 27°C (81°F), this humidity feels like a warm, sticky embrace, making outdoor exploration feel a bit more intense while increasing the need for hydration as you navigate through the sights.

December Average Humidity in Usulutan

This chart illustrates the average monthly humidity levels in Usulutan, 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 Usulutan 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 Usulutan

In Usulutan 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 Usulutan.

Maximum UV Index Levels in Usulutan for December

The chart shows the monthly maximum UV Index (UVI) for Usulutan 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 Usulutan typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11121414141413131313109
Data source: Usulutan 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 Usulutan Compares to Other Months

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

This table compares monthly weather conditions in Usulutan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (82°F)1 mm (0.1 inches)63%extreme
February Weather28°C (83°F)3 mm (0.1 inches)62%extreme
March Weather29°C (84°F)7 mm (0.3 inches)59%extreme
April Weather29°C (84°F)25 mm (1.0 inches)59%extreme
May Weather28°C (83°F)230 mm (9.1 inches)59%extreme
June Weather28°C (82°F)353 mm (13.9 inches)68%extreme
July Weather29°C (84°F)141 mm (5.5 inches)77%extreme
August Weather28°C (82°F)275 mm (10.8 inches)79%extreme
September Weather27°C (81°F)280 mm (11.0 inches)77%extreme
October Weather27°C (81°F)409 mm (16.1 inches)77%extreme
November Weather27°C (81°F)80 mm (3.2 inches)75%very high
December Weather27°C (81°F)4 mm (0.2 inches)66%very high

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