December weather forecast and climate
Rio Vista, Colombia

Weather in December

The first month of the winter, December, is still a tropical month in Rio Vista, Colombia, with average temperature varying between 30.5°C (86.9°F) and 19.5°C (67.1°F).

Temperature

In December, the average high-temperature is practically the same as in November - a still hot 30.5°C (86.9°F). In December, the average low-temperature is 19.5°C (67.1°F).

Heat index

In December, the average heat index is estimated at a very hot 37.7°C (99.9°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', 'felt air temperature', 'apparent temperature', or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, differences in body mass, height, and shape, wind). 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 particularly important for children. 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. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In December, the average relative humidity in Rio Vista is 75%.

Rainfall

In Rio Vista, in December, it is raining for 23.5 days, with typically 163mm (6.42") of accumulated precipitation. Throughout the year, there are 279.7 rainfall days, and 2063mm (81.22") of precipitation is accumulated.

Daylight

Months with the shortest days in Rio Vista, Colombia, are January and December, with an average of 11.8h of daylight.

Sunshine

December has the least sunshine of the year, with an average of 7.8h of sunshine.

UV index

Months with the lowest UV index are January through March, May through July, September through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation for the ordinary person.
Note: In December, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in December in Rio Vista?

In Rio Vista, in December, the average high-temperature is 30.5°C (86.9°F), and the average low-temperature is 19.5°C (67.1°F). In December, the average heat index (a.k.a. 'real feel', 'apparent temperature'), that factores the actual air temperature with the relative humidity, is calculated to 37.7°C (99.9°F).

What is the average humidity in December in Rio Vista?

In December, the average relative humidity in Rio Vista, Colombia, is 75%.

How many days does it rain in December in Rio Vista?

In December, the rain falls for 23.5 days. Throughout December, 163mm (6.42") of precipitation is accumulated.

What is the month with the shortest days in Rio Vista?

Months with the shortest days in Rio Vista are January and December, with an average of 11.8h of daylight.

What is the average length of the day in December in Rio Vista?

In December, the average length of the day in Rio Vista is 11.8h.

What is the month with the least sunshine in Rio Vista?

December has the least sunshine of the year in Rio Vista, Colombia, with an average of 7.8h of sunshine.

How many hours of sunshine does Rio Vista have in December?

In Rio Vista, the average sunshine in December is 7.8h.

When is the lowest UV index in Rio Vista?

Months with the lowest UV index in Rio Vista are January through March, May through July, September through December, with an average maximum UV index of 6.

What is the UV index reading in December in Rio Vista?

In Rio Vista, Colombia, the average daily maximum UV index in December is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays.

Average temperature in December
Rio Vista, Colombia

Average temperature in December - Rio Vista, Colombia
  • Average high temperature in December: 30.5°C

The warmest month (with the highest average high temperature) is August (33.8°C).
The month with the lowest average high temperature is November (30.3°C).

  • Average low temperature in December: 19.5°C

The month with the highest average low temperature is March (20.4°C).
The coldest month (with the lowest average low temperature) is January (19.4°C).

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Average pressure in December
Rio Vista, Colombia

Average pressure in December - Rio Vista, Colombia
  • Average pressure in December: 1012.7mbar

Months with the highest atmospheric pressure are June and July (1013.7mbar).
The month with the lowest atmospheric pressure is November (1012.6mbar).

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Average wind speed in December
Rio Vista, Colombia

Average wind speed in December - Rio Vista, Colombia
  • Average wind speed in December: 2.9km/h

The windiest month (with the highest average wind speed) is July (3.9km/h).
The calmest month (with the lowest average wind speed) is November (2.8km/h).

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Average humidity in December
Rio Vista, Colombia

Average humidity in December - Rio Vista, Colombia
  • Average humidity in December: 75%

The month with the highest relative humidity is November (80%).
The month with the lowest relative humidity is August (59%).

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Average rainfall in December
Rio Vista, Colombia

Average rainfall in December - Rio Vista, Colombia
  • Average rainfall in December: 163mm

The wettest month (with the highest rainfall) is October (283mm).
The driest month (with the least rainfall) is August (106mm).

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Average rainfall days in December
Rio Vista, Colombia

Average rainfall days in December - Rio Vista, Colombia
  • Average rainfall days in December: 23.5 days

The month with the highest number of rainy days is March (28 days).
The month with the least rainy days is August (18.8 days).

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Average daylight in December /
Average sunshine in December
Rio Vista, Colombia

Average daylight in December / Average sunshine in December - Rio Vista, Colombia
  • Average daylight in December: 11.8h

The month with the longest days is June (Average daylight: 12.5h).
Months with the shortest days are January and December (Average daylight: 11.8h).

  • Average sunshine in December: 7.8h

The month with the most sunshine is August (Average sunshine: 11.9h).
The month with the least sunshine is December (Average sunshine: 7.8h).

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Average sunshine days in December
Rio Vista, Colombia

Average sunshine days in December - Rio Vista, Colombia
  • Average sunshine days in December: 6.5 days

The month with the most sunshine days is August (11.2 days).
The month with the least sunshine days is November (2 days).

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Average UV index in December
Rio Vista, Colombia

Average UV index in December - Rio Vista, Colombia
  • Average UV index in December: 6

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

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Average cloud cover in December
Rio Vista, Colombia

Average cloud cover in December - Rio Vista, Colombia
  • Average cloud cover in December: 36

The month with the most cloud cover is November (Cloud cover 43).
Months with the least cloud cover are August and September (Cloud cover 27).

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Average visibility in December
Rio Vista, Colombia

Average visibility in December - Rio Vista, Colombia
  • Average visibility in December: 9km

Months with the highest visibility are July and August (10km).
Months with the lowest visibility are October and November (8km).

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