December weather forecast
Cas Ariba, Aruba

Weather in December

December, the first month of the winter in Cas Ariba, is also a moderately hot month, with an average temperature varying between 27.7°C (81.9°F) and 26.7°C (80.1°F).

Temperature

In December, the average high-temperature is essentially the same as in November - a still moderately hot 27.7°C (81.9°F). The average low-temperature, in December, is 26.7°C (80.1°F).

Heat index

The average heat index in December is calculated to be a tropical 31°C (87.8°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, clothing, pregnancy), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Cas Ariba, the average relative humidity in December is 79%.

Rainfall

In December, the rain falls for 22.6 days. Throughout December, 55mm (2.17") of precipitation is accumulated. In Cas Ariba, during the entire year, the rain falls for 184.2 days and collects up to 472mm (18.58") of precipitation.

Daylight

The month with the shortest days is December, with an average of 11h and 25min of daylight.
On the first day of December in Cas Ariba, sunrise is at 06:45 and sunset at 18:12. On the last day of the month, sunrise is at 07:00 and sunset at 18:25 AST.

Sunshine

December has the least sunshine of the year in Cas Ariba, with an average of 8.2h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in December in Cas Ariba?

In Cas Ariba, Aruba, in December, the average high-temperature is 27.7°C (81.9°F), and the average low-temperature is 26.7°C (80.1°F). in December, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is calculated to be 31°C (87.8°F).

What is the average humidity in December in Cas Ariba?

In Cas Ariba, the average relative humidity in December is 79%.

How much does it rain in Cas Ariba in December?

In Cas Ariba, in December, during 22.6 rainfall days, 55mm (2.17") of precipitation is typically accumulated.

What is the month with the shortest days in Cas Ariba?

December has the shortest days of the year in Cas Ariba, with an average of 11h and 25min of daylight.

What is the average length of the day in December in Cas Ariba?

In December, the average day length is 11h and 25min.

When is the sunrise / sunset in December in Cas Ariba?

In December, on the first day of the month, sunrise is at 06:45 and sunset at 18:12. On the last day of the month, in Cas Ariba, Aruba, sunrise is at 07:00 and sunset at 18:25 AST.

What is the month with the least sunshine in Cas Ariba?

The month with the least sunshine in Cas Ariba, Aruba, is December, with an average of 8.2h of sunshine.

How long on average sun shines in December in Cas Ariba?

The average sunshine duration in December in Cas Ariba, Aruba, is 8.2h.

What are the months with the highest UV index in Cas Ariba?

The months with the highest UV index are January through December, with an average maximum UV index of 7.

What are the months with the lowest UV index in Cas Ariba?

The months with the lowest UV index in Cas Ariba are January through December, with an average maximum UV index of 7.

What is the UV index reading in December in Cas Ariba?

In December, the average daily maximum UV index in Cas Ariba, Aruba, is 7. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.

Average temperature in December
Cas Ariba, Aruba

Average temperature in December - Cas Ariba, Aruba
  • Average high temperature in December: 27.7°C

The warmest month (with the highest average high temperature) is September (29°C).
The month with the lowest average high temperature is February (26.4°C).

  • Average low temperature in December: 26.7°C

The month with the highest average low temperature is September (28.3°C).
The coldest month (with the lowest average low temperature) is February (25.8°C).

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Average pressure in December
Cas Ariba, Aruba

Average pressure in December - Cas Ariba, Aruba
  • Average pressure in December: 1011.4mbar

The month with the highest atmospheric pressure is January (1012.6mbar).
The month with the lowest atmospheric pressure is October (1009.6mbar).

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Average wind speed in December
Cas Ariba, Aruba

Average wind speed in December - Cas Ariba, Aruba
  • Average wind speed in December: 32.4km/h

The windiest month (with the highest average wind speed) is June (37.5km/h).
The calmest month (with the lowest average wind speed) is November (26.1km/h).

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Average humidity in December
Cas Ariba, Aruba

Average humidity in December - Cas Ariba, Aruba
  • Average humidity in December: 79%

The month with the highest relative humidity is May (83%).
The month with the lowest relative humidity is November (78%).

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Average rainfall in December
Cas Ariba, Aruba

Average rainfall in December - Cas Ariba, Aruba
  • Average rainfall in December: 55mm

The wettest month (with the highest rainfall) is October (110mm).
The driest month (with the least rainfall) is June (15mm).

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Average rainfall days in December
Cas Ariba, Aruba

Average rainfall days in December - Cas Ariba, Aruba
  • Average rainfall days in December: 22.6 days

The month with the highest number of rainy days is November (23.9 days).
The month with the least rainy days is June (10.6 days).

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Average daylight in December /
Average sunshine in December
Cas Ariba, Aruba

Average daylight in December / Average sunshine in December - Cas Ariba, Aruba
  • Average daylight in December: 11h and 25min

The month with the longest days is June (Average daylight: 12h and 51min).
The month with the shortest days is December (Average daylight: 11h and 25min).

  • Average sunshine in December: 8h and 12min

The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 8h and 12min).

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Average sunshine days in December
Cas Ariba, Aruba

Average sunshine days in December - Cas Ariba, Aruba
  • Average sunshine days in December: 3.3 days

The month with the most sunshine days is August (14.8 days).
The month with the least sunshine days is November (2.1 days).

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Average UV index in December
Cas Ariba, Aruba

Average UV index in December - Cas Ariba, Aruba
  • Average UV index in December: 7

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

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Average cloud cover in December
Cas Ariba, Aruba

Average cloud cover in December - Cas Ariba, Aruba
  • Average cloud cover in December: 41

The months with the most cloud cover are March and November (Cloud cover 42).
The month with the least cloud cover is September (Cloud cover 26).

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Average visibility in December
Cas Ariba, Aruba

Average visibility in December - Cas Ariba, Aruba
  • 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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