December weather forecast
Sixaola, Costa Rica

December

Weather in December

The first month of the winter, December, is also a moderately hot month in Sixaola, Costa Rica, with temperature in the range of an average low of 22.9°C (73.2°F) and an average high of 27.7°C (81.9°F).

Temperature

Sixaola experiences an average high-temperature of a still warm 27.7°C (81.9°F) in December, subtly different from November's 28.6°C (83.5°F). Nighttime temperatures during December report a consistent average of 22.9°C (73.2°F).

Heat index

The average heat index in December is computed to be a tropical 30°C (86°F). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.
Heat index details are generally centered around shaded locations and a mild breeze. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is found by incorporating humidity levels into the air temperature measurement. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

In December, the average relative humidity is 71%.

Rainfall

In Sixaola, in December, it is raining for 12.6 days, with typically 65mm (2.56") of accumulated precipitation. Throughout the year, there are 197.8 rainfall days, and 826mm (32.52") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 11h and 36min of daylight.
On the first day of December in Sixaola, sunrise is at 05:31 and sunset at 17:08. On the last day of the month, sunrise is at 05:46 and sunset at 17:21 CST.

Sunshine

July and December, with an average of 8.3h of sunshine, are months with the least sunshine.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 6 in December interprets into the following advice:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.

Frequently asked questions

What are December temperatures?
Sixaola in December has an average high-temperature of 27.7°C (81.9°F) and an average low-temperature of 22.9°C (73.2°F). In December, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, is computed to be 30°C (86°F).
What is the average humidity in December?
In Sixaola, the average relative humidity in December is 71%.
How much does it rain in Sixaola in December?
In Sixaola, during December, the rain falls for 12.6 days and regularly aggregates up to 65mm (2.56") of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 11h and 36min of daylight.
How many hours of daylight does Sixaola have in December?
In December, the average day length is 11h and 35min.
What time are sunrise and sunset in December in Sixaola?
On the first day of December, sunrise is at 05:31 and sunset at 17:08. On the last day of the month, sunrise is at 05:46 and sunset at 17:21 CST.
What are the months with the least sunshine?
July and December, with an average of 8.3h of sunshine, are months with the least sunshine.
How long on average sun shines in December?
In December, the average sunshine duration is 8.3h.
When is the lowest UV index?
January, February and December, with an average maximum UV index of 6, are months with the lowest UV index.
What is the UV index intensity in December?
In December, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Sixaola, Costa Rica
Average temperature in December
Sixaola, Costa Rica
  • Average high temperature in December: 27.7°C

The warmest month (with the highest average high temperature) is September (30°C).
The month with the lowest average high temperature is January (27.2°C).

  • Average low temperature in December: 22.9°C

The month with the highest average low temperature is September (24.9°C).
The coldest month (with the lowest average low temperature) is February (22°C).

Average pressure in December - Sixaola, Costa Rica
Average pressure in December
Sixaola, Costa Rica
  • Average pressure in December: 1011.8mbar

The month with the highest atmospheric pressure is January (1012.7mbar).
The month with the lowest atmospheric pressure is October (1010.8mbar).

Average wind speed in December - Sixaola, Costa Rica
Average wind speed in December
Sixaola, Costa Rica
  • Average wind speed in December: 9.8km/h

The windiest month (with the highest average wind speed) is December (9.8km/h).
The calmest months (with the lowest average wind speed) are September and October (6.2km/h).

Average humidity in December - Sixaola, Costa Rica
Average humidity in December
Sixaola, Costa Rica
  • Average humidity in December: 71%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is September (69%).

Average rainfall in December - Sixaola, Costa Rica
Average rainfall in December
Sixaola, Costa Rica
  • Average rainfall in December: 65mm

The wettest month (with the highest rainfall) is July (120mm).
The driest month (with the least rainfall) is March (28mm).

Average rainfall days in December - Sixaola, Costa Rica
Average rainfall days in December
Sixaola, Costa Rica
  • Average rainfall days in December: 12.6 days

The month with the highest number of rainy days is July (22.3 days).
The month with the least rainy days is January (10.6 days).

Average daylight in December / Average sunshine in December - Sixaola, Costa Rica
Average daylight in December /
Average sunshine in December
Sixaola, Costa Rica
  • Average daylight in December: 11h and 4min

The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).

  • Average sunshine in December: 8h and 2min

The month with the most sunshine is September (Average sunshine: 9h and 18min).
The months with the least sunshine are July and December (Average sunshine: 8h and 18min).

Average sunshine days in December - Sixaola, Costa Rica
Average sunshine days in December
Sixaola, Costa Rica
  • Average sunshine days in December: 14.6 days

The month with the most sunshine days is January (17.7 days).
The month with the least sunshine days is July (5.5 days).

Average UV index in December - Sixaola, Costa Rica
Average UV index in December
Sixaola, Costa Rica
  • Average UV index in December: 6

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

Average cloud cover in December - Sixaola, Costa Rica
Average cloud cover in December
Sixaola, Costa Rica
  • Average cloud cover in December: 37

The month with the most cloud cover is July (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 27).

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

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

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