December weather forecast
Guaymango, El Salvador

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Weather in December

December, the first month of the winter in Guaymango, is also a moderately hot month, with an average temperature fluctuating between 20.7°C (69.3°F) and 29.6°C (85.3°F).

Temperature

With December's arrival, Guaymango's weather records an average high-temperature of a still warm 29.6°C (85.3°F), marking little difference from November's 29.5°C (85.1°F). The average temperature during December nights is registered at a pleasant 20.7°C (69.3°F).

Heat index

Throughout December, the heat index is calculated to be a hot 34°C (93.2°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. 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 hold particular importance for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.

Humidity

In December, the average relative humidity in Guaymango is 69%.

Rainfall

In Guaymango, in December, during 1.7 rainfall days, 3mm (0.12") of precipitation is typically accumulated. Throughout the year, in Guaymango, there are 166.9 rainfall days, and 832mm (32.76") of precipitation is accumulated.

Daylight

With an average of 11h and 18min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:07 and sunset at 17:29. On the last day of December, in Guaymango, sunrise is at 06:22 and sunset at 17:42 CST.

Sunshine

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

UV index

The months with the lowest UV index in Guaymango are June, August through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, a daily UV index of 6 turns into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. 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. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

Is it hot in Guaymango during December?

In Guaymango, 29.6°C (85.3°F) is the average high-temperature and 20.7°C (69.3°F) is the average low-temperature during December. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in December is calculated to be 34°C (93.2°F).

What is the average humidity in December in Guaymango?

In Guaymango, the average relative humidity in December is 69%.

How many days does it rain in December in Guaymango?

In Guaymango, in December, during 1.7 rainfall days, 3mm (0.12") of precipitation is typically accumulated.

What is the month with the shortest days in Guaymango?

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

What is the average length of the day in December in Guaymango?

The average day length in December in Guaymango is 11h and 20min.

When is the sunrise / sunset in December in Guaymango?

In December, on the first day of the month, sunrise is at 06:07 and sunset at 17:29. On the last day of the month, sunrise is at 06:22 and sunset at 17:42 CST.

What is the month with the least sunshine in Guaymango?

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

How many hours of sunshine does Guaymango have in December?

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

What is the month with the lowest UV index in Guaymango?

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

What is the UV index reading in December in Guaymango?

In Guaymango, El Salvador, the average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.

Average temperature in December
Guaymango, El Salvador

Average temperature in December - Guaymango, 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).

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Average pressure in December
Guaymango, El Salvador

Average pressure in December - Guaymango, 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).

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Average wind speed in December
Guaymango, El Salvador

Average wind speed in December - Guaymango, 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).

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Average humidity in December
Guaymango, El Salvador

Average humidity in December - Guaymango, El Salvador
  • Average humidity in December: 69%

The months with the highest relative humidity are September and October (81%).
The month with the lowest relative humidity is March (64%).

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Average rainfall in December
Guaymango, El Salvador

Average rainfall in December - Guaymango, El Salvador
  • Average rainfall in December: 3mm

The wettest month (with the highest rainfall) is October (161mm).
The driest month (with the least rainfall) is January (1mm).

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Average rainfall days in December
Guaymango, El Salvador

Average rainfall days in December - Guaymango, El Salvador
  • Average rainfall days in December: 1.7 days

The month with the highest number of rainy days is September (24 days).
The month with the least rainy days is December (1.7 days).

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

Average daylight in December / Average sunshine in December - Guaymango, 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 30min).
The months with the least sunshine are January and December (Average sunshine: 7h and 42min).

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Average sunshine days in December
Guaymango, El Salvador

Average sunshine days in December - Guaymango, 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 (4.4 days).

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Average UV index in December
Guaymango, El Salvador

Average UV index in December - Guaymango, 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).

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Average cloud cover in December
Guaymango, El Salvador

Average cloud cover in December - Guaymango, El Salvador
  • Average cloud cover in December: 12

The months with the most cloud cover are June and September (Cloud cover 37).
The months with the least cloud cover are January and December (Cloud cover 12).

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Average visibility in December
Guaymango, El Salvador

Average visibility in December - Guaymango, 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).

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Guaymango, El Salvador

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