December weather forecast
Joya de Ceren, El Salvador

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Weather in December

As December takes over, it welcomes the dry season's full effect. The rainfall levels continue to decline, recording only 3mm (0.12"), the lowest throughout the year. Similarly, the temperature lowers, portraying cooler weather fitting for the holiday season. The wind speeds continue to rise, bringing along pleasant breezes. Observing these weather characteristics, December can be seen as the commencement of a refreshing and cooler phase, setting the stage for a new cycle as the year ends.

Temperature

As Joya de Ceren welcomes December, the average high-temperature is noted at a still warm 29.6°C (85.3°F), closely aligning with the preceding month. December witnesses an average low-temperature hovering around a pleasant 20.7°C (69.3°F).

Heat index

The heat index value for December is calculated to be a hot 34°C (93.2°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

In December, the average relative humidity is 69%.

Rainfall

In Joya de Ceren, in December, it is raining for 1.7 days, with typically 3mm (0.12") of accumulated precipitation. In Joya de Ceren, during the entire year, the rain falls for 167.4 days and collects up to 855mm (33.66") of precipitation.

Daylight

December has the shortest days of the year, with an average of 11h and 18min of daylight.
On the first day of December, sunrise is at 06:05 and sunset at 17:27. On the last day of the month, sunrise is at 06:20 and sunset at 17:40 CST.

Sunshine

The month with the least sunshine is December, with an average of 7.5h of sunshine.

UV index

June, August through December, with an average maximum UV index of 6, are months with the lowest UV index in Joya de Ceren, El Salvador. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: An average UV index of 6 in December transforms into this advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.

Frequently asked questions

Is it hot during December?

December temperatures vary between a high-temperature of 29.6°C (85.3°F) and a low-temperature of 20.7°C (69.3°F). In December, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 34°C (93.2°F).

What is the average humidity in December?

The average relative humidity in December is 69%.

How much does it rain in Joya de Ceren in December?

In Joya de Ceren, during December, the rain falls for 1.7 days and regularly aggregates up to 3mm (0.12") of precipitation.

What is the month with the shortest days in Joya de Ceren?

With an average of 11h and 18min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

In December, the average day length is 11h and 20min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 06:05 and sunset at 17:27. On the last day of the month, sunrise is at 06:20 and sunset at 17:40 CST.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 7.5h of sunshine.

How many hours of sunshine does Joya de Ceren have in December?

In Joya de Ceren, the average sunshine duration in December is 7.5h.

What are the months with the lowest UV index?

The months with the lowest UV index are June, August through December, with an average maximum UV index of 6.

How high is the UV index in December?

In Joya de Ceren, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.

Average temperature in December
Joya de Ceren, El Salvador

Average temperature in December - Joya de Ceren, El Salvador
  • Average high temperature in December: 29.6°C

The warmest month (with the highest average high temperature) is April (31.8°C).
The month with the lowest average high temperature is October (28.6°C).

  • Average low temperature in December: 20.7°C

The month with the highest average low temperature is May (23.3°C).
The coldest month (with the lowest average low temperature) is January (20.5°C).

Average pressure in December
Joya de Ceren, El Salvador

Average pressure in December - Joya de Ceren, El Salvador
  • Average pressure in December: 1012.9mbar

The month with the highest atmospheric pressure is January (1013.5mbar).
The month with the lowest atmospheric pressure is October (1011.3mbar).

Average wind speed in December
Joya de Ceren, El Salvador

Average wind speed in December - Joya de Ceren, El Salvador
  • Average wind speed in December: 9.4km/h

The windiest month (with the highest average wind speed) is January (10.3km/h).
The calmest month (with the lowest average wind speed) is June (6.1km/h).

Average humidity in December
Joya de Ceren, El Salvador

Average humidity in December - Joya de Ceren, El Salvador
  • Average humidity in December: 69%

The month with the highest relative humidity is September (82%).
The month with the lowest relative humidity is March (64%).

Average rainfall in December
Joya de Ceren, El Salvador

Average rainfall in December - Joya de Ceren, El Salvador
  • Average rainfall in December: 3mm

The wettest month (with the highest rainfall) is October (162mm).
The driest month (with the least rainfall) is January (1mm).

Average rainfall days in December
Joya de Ceren, El Salvador

Average rainfall days in December - Joya de Ceren, El Salvador
  • Average rainfall days in December: 1.7 days

The month with the highest number of rainy days is September (24.5 days).
The month with the least rainy days is December (1.7 days).

Average daylight in December /
Average sunshine in December
Joya de Ceren, El Salvador

Average daylight in December / Average sunshine in December - Joya de Ceren, El Salvador
  • Average daylight in December: 11h and 2min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 18min).

  • Average sunshine in December: 7h and 3min

The month with the most sunshine is April (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 7h and 30min).

Average sunshine days in December
Joya de Ceren, El Salvador

Average sunshine days in December - Joya de Ceren, El Salvador
  • Average sunshine days in December: 28.6 days

The month with the most sunshine days is January (28.7 days).
The month with the least sunshine days is September (4 days).

Average UV index in December
Joya de Ceren, El Salvador

Average UV index in December - Joya de Ceren, El Salvador
  • Average UV index in December: 6

The months with the highest UV index are January, February, March, April, May and July (UV index 7).
The months with the lowest UV index are June, August, September, October, November and December (UV index 6).

Average cloud cover in December
Joya de Ceren, El Salvador

Average cloud cover in December - Joya de Ceren, El Salvador
  • Average cloud cover in December: 12

The month with the most cloud cover is September (Cloud cover 40).
The months with the least cloud cover are January and December (Cloud cover 12).

Average visibility in December
Joya de Ceren, El Salvador

Average visibility in December - Joya de Ceren, El Salvador
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, November and December (10km).
The month with the lowest visibility is October (9km).

Joya de Ceren, El Salvador

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