December weather forecast
Mejicanos, El Salvador

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Weather in December

December seals the year in Mejicanos with cooler temperatures, creating a comfortable climate as it brings in the new year. The relative humidity decreases to 70%, allowing drier conditions to prevail. Despite the month recording a low rainfall of 4mm (0.16"), the atmospheric pressure remains steady at 1013mb, contributing to the stable climatic conditions. Meanwhile, the wind gust drops to contemplative 12km/h (7.5mph), giving gentle breezes. A constant UV Index of 6 persists in December, eliminating severe chances of UV exposure.

Temperature

The advent of December brings an average high-temperature of a still moderately hot 29.9°C (85.8°F), almost the same as the preceding month. Mejicanos's nighttime temperature in December falls to an average of 19.5°C (67.1°F).

Heat index

For December, the heat index is evaluated at a fiery hot 35°C (95°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in December is 70%.

Rainfall

In Mejicanos, in December, during 2.3 rainfall days, 4mm (0.16") of precipitation is typically accumulated. Throughout the year, there are 187 rainfall days, and 1106mm (43.54") of precipitation is accumulated.

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 06:04 and sunset at 17:27. On the last day of the month, sunrise is at 06:20 and sunset at 17:40 CST.

Sunshine

January and December, with an average of 7.7h of sunshine, are months with the least sunshine in Mejicanos.

UV index

January, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: An average maximum UV index of 6 in December leads to these recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.

Frequently asked questions

How hot is December?

The high-temperature, in December, in Mejicanos, is 29.9°C (85.8°F), while the low-temperature averages to 19.5°C (67.1°F). In December, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 35°C (95°F).

What is the average humidity in December?

The average relative humidity in December is 70%.

How many days does it rain in December?

In Mejicanos, during December, the rain falls for 2.3 days and regularly aggregates up to 4mm (0.16") of precipitation.

What is the month with the shortest days in Mejicanos?

The month with the shortest days is December, with an average of 11h and 18min of daylight.

How many hours of daylight does Mejicanos have in December?

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

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 06:04 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 months with the least sunshine are January and December, with an average of 7.7h of sunshine.

How many hours of sunshine does Mejicanos have in December?

In Mejicanos, the average sunshine duration in December is 7.7h.

What are the months with the lowest UV index?

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

What is the UV index reading in December?

In Mejicanos, the average daily maximum UV index in December is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in December
Mejicanos, El Salvador

Average temperature in December - Mejicanos, El Salvador
  • Average high temperature in December: 29.9°C

The warmest month (with the highest average high temperature) is March (32.6°C).
The month with the lowest average high temperature is October (29°C).

  • Average low temperature in December: 19.5°C

The month with the highest average low temperature is April (22.8°C).
The coldest month (with the lowest average low temperature) is January (19.4°C).

Average pressure in December
Mejicanos, El Salvador

Average pressure in December - Mejicanos, El Salvador
  • Average pressure in December: 1013mbar

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

Average wind speed in December
Mejicanos, El Salvador

Average wind speed in December - Mejicanos, El Salvador
  • Average wind speed in December: 7.9km/h

The windiest month (with the highest average wind speed) is January (8.5km/h).
The calmest month (with the lowest average wind speed) is June (4.8km/h).

Average humidity in December
Mejicanos, El Salvador

Average humidity in December - Mejicanos, El Salvador
  • Average humidity in December: 70%

The months with the highest relative humidity are September and October (82%).
The month with the lowest relative humidity is March (62%).

Average rainfall in December
Mejicanos, El Salvador

Average rainfall in December - Mejicanos, El Salvador
  • Average rainfall in December: 4mm

The wettest month (with the highest rainfall) is May (234mm).
The driest month (with the least rainfall) is January (1mm).

Average rainfall days in December
Mejicanos, El Salvador

Average rainfall days in December - Mejicanos, El Salvador
  • Average rainfall days in December: 2.3 days

The month with the highest number of rainy days is September (26.3 days).
The month with the least rainy days is January (1.9 days).

Average daylight in December /
Average sunshine in December
Mejicanos, El Salvador

Average daylight in December / Average sunshine in December - Mejicanos, 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 4min

The month with the most sunshine is April (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 7h and 42min).

Average sunshine days in December
Mejicanos, El Salvador

Average sunshine days in December - Mejicanos, El Salvador
  • Average sunshine days in December: 28.5 days

The month with the most sunshine days is January (28.7 days).
The month with the least sunshine days is September (3.2 days).

Average UV index in December
Mejicanos, El Salvador

Average UV index in December - Mejicanos, El Salvador
  • Average UV index in December: 6

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

Average cloud cover in December
Mejicanos, El Salvador

Average cloud cover in December - Mejicanos, El Salvador
  • Average cloud cover in December: 14

The months with the most cloud cover are June, September and October (Cloud cover 38).
The month with the least cloud cover is January (Cloud cover 13).

Average visibility in December
Mejicanos, El Salvador

Average visibility in December - Mejicanos, El Salvador
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, November and December (10km).
The months with the lowest visibility are September and October (8km).

Mejicanos, El Salvador

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