December weather forecast and climate
El Gallo, Costa Rica

Weather in December

The first month of the winter, December, is also a moderately hot month in El Gallo, Costa Rica, with average temperature ranging between min 22.2°C (72°F) and max 29.5°C (85.1°F).

Temperature

In El Gallo, Costa Rica, the average high-temperature is relatively the same as in November - a still warm 29.5°C (85.1°F). In December, the average low-temperature is 22.2°C (72°F).

Heat index

In December, the average heat index is appraised at a very hot 35.7°C (96.3°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'felt air temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, differences in body mass, height, and shape, wind), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In December, the average relative humidity in El Gallo, Costa Rica, is 78%.

Rainfall

In El Gallo, Costa Rica, it is raining for 5.7 days, with typically 9mm (0.35") of accumulated precipitation. In El Gallo, during the entire year, the rain falls for 188.5 days and collects up to 1202mm (47.32") of precipitation.

Daylight

December has the shortest days of the year in El Gallo, with an average of 11.5h of daylight.

Sunshine

In December, the average sunshine in El Gallo is 9.6h.

UV index

January through October and December, with an average maximum UV index of 7, are months with the highest UV index in El Gallo. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in December in El Gallo?

In El Gallo, Costa Rica, in December, the average high-temperature is 29.5°C (85.1°F), and the average low-temperature is 22.2°C (72°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that takes the relative humidity and factores it into the air temperature reading, in December is evaluated at 35.7°C (96.3°F).

What is the average humidity in December in El Gallo?

In El Gallo, Costa Rica, the average relative humidity in December is 78%.

How many days does it rain in December in El Gallo?

In El Gallo, in December, during 5.7 rainfall days, 9mm (0.35") of precipitation is typically accumulated.

What is the month with the shortest days in El Gallo?

December has the shortest days of the year in El Gallo, Costa Rica, with an average of 11.5h of daylight.

What is the average length of the day in December in El Gallo?

In December, the average length of the day in El Gallo is 11.5h.

How long on average sun shines in December in El Gallo?

In December, the average sunshine in El Gallo is 9.6h.

When is the highest UV index in El Gallo?

Months with the highest UV index in El Gallo are January through October and December, with an average maximum UV index of 7.

What is the UV index reading in December in El Gallo?

The average daily maximum UV index in December is 7. A UV Index reading of 6 to 7 represents a high health threat from the exposure to the Sun's UV radiation.

Average temperature in December
El Gallo, Costa Rica

Average temperature in December - El Gallo, Costa Rica
  • Average high temperature in December: 29.5°C

The warmest month (with the highest average high temperature) is April (34.9°C).
The month with the lowest average high temperature is October (29°C).

  • Average low temperature in December: 22.2°C

The month with the highest average low temperature is May (24.8°C).
The coldest month (with the lowest average low temperature) is January (22°C).

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Average pressure in December
El Gallo, Costa Rica

Average pressure in December - El Gallo, Costa Rica
  • Average pressure in December: 1010.7mbar

The month with the highest atmospheric pressure is January (1011.3mbar).
The month with the lowest atmospheric pressure is October (1010.1mbar).

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Average wind speed in December
El Gallo, Costa Rica

Average wind speed in December - El Gallo, Costa Rica
  • Average wind speed in December: 16.4km/h

The windiest month (with the highest average wind speed) is February (21.4km/h).
The calmest month (with the lowest average wind speed) is September (6.8km/h).

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Average humidity in December
El Gallo, Costa Rica

Average humidity in December - El Gallo, Costa Rica
  • Average humidity in December: 78%

The month with the highest relative humidity is October (87%).
The month with the lowest relative humidity is April (62%).

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Average rainfall in December
El Gallo, Costa Rica

Average rainfall in December - El Gallo, Costa Rica
  • Average rainfall in December: 9mm

The wettest month (with the highest rainfall) is October (274mm).
The driest month (with the least rainfall) is March (1mm).

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Average rainfall days in December
El Gallo, Costa Rica

Average rainfall days in December - El Gallo, Costa Rica
  • Average rainfall days in December: 5.7 days

The month with the highest number of rainy days is September (27.7 days).
The month with the least rainy days is February (2 days).

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Average daylight in December /
Average sunshine in December
El Gallo, Costa Rica

Average daylight in December / Average sunshine in December - El Gallo, Costa Rica
  • Average daylight in December: 11.5h

Months with the longest days are June and July (Average daylight: 12.7h).
The month with the shortest days is December (Average daylight: 11.5h).

  • Average sunshine in December: 9.6h

The month with the most sunshine is July (Average sunshine: 10.2h).
Months with the least sunshine are January and October (Average sunshine: 7.6).

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Average sunshine days in December
El Gallo, Costa Rica

Average sunshine days in December - El Gallo, Costa Rica
  • Average sunshine days in December: 24.3 days

The month with the most sunshine days is March (28.8 days).
The month with the least sunshine days is September (1.1 days).

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Average UV index in December
El Gallo, Costa Rica

Average UV index in December - El Gallo, Costa Rica
  • Average UV index in December: 7

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

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Average cloud cover in December
El Gallo, Costa Rica

Average cloud cover in December - El Gallo, Costa Rica
  • Average cloud cover in December: 18

The month with the most cloud cover is October (Cloud cover 46).
The month with the least cloud cover is February (Cloud cover 10).

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Average visibility in December
El Gallo, Costa Rica

Average visibility in December - El Gallo, Costa Rica
  • Average visibility in December: 10km

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

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