December weather forecast
Vierge des Trois Tonneaux, French Guiana

December

Weather in December

The first month of the winter, December, is also a moderately hot month in Vierge des Trois Tonneaux, French Guiana, with an average temperature fluctuating between 28.6°C (83.5°F) and 24.7°C (76.5°F).

Temperature

Vierge des Trois Tonneaux registers an average high-temperature of a moderately hot 28.6°C (83.5°F) at the commencement of December, closely related to the preceding month. Maintaining close parity with daytime warmth, the average nocturnal temperature during December stays at a still warm 24.7°C (76.5°F).

Heat index

The heat index in December is evaluated at a hot 34°C (93.2°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
The heat index's values are generally associated with conditions in shade and light breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.

Humidity

The average relative humidity in December in Vierge des Trois Tonneaux is 82%.

Rainfall

In Vierge des Trois Tonneaux, in December, it is raining for 26 days, with typically 227mm (8.94") of accumulated precipitation. In Vierge des Trois Tonneaux, French Guiana, during the entire year, the rain falls for 288 days and collects up to 1773mm (69.8") of precipitation.

Daylight

The month with the shortest days in Vierge des Trois Tonneaux is December, with an average of 11h and 48min of daylight.
On the first day of the month, sunrise is at 06:26 and sunset at 18:17. On the last day of December, sunrise is at 06:40 and sunset at 18:31 -03.

Sunshine

In December, the average sunshine in Vierge des Trois Tonneaux is 7.4h.

UV index

January through June and December, with an average maximum UV index of 6, are months with the lowest UV index in Vierge des Trois Tonneaux. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 6 during December morphs into the following directions:
Shield from overexposure. Defense against sun-related harm is required. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.

Frequently asked questions

How hot is December in Vierge des Trois Tonneaux?
During December, Vierge des Trois Tonneaux experiences an average high-temperature of 28.6°C (83.5°F) and a low-temperature of 24.7°C (76.5°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in December is evaluated at 34°C (93.2°F).
What is the average humidity in December in Vierge des Trois Tonneaux?
In December, the average relative humidity in Vierge des Trois Tonneaux is 82%.
How many days does it rain in December in Vierge des Trois Tonneaux?
In Vierge des Trois Tonneaux, French Guiana, in December, during 26 rainfall days, 227mm (8.94") of precipitation is typically accumulated.
What is the month with the shortest days in Vierge des Trois Tonneaux?
December has the shortest days of the year in Vierge des Trois Tonneaux, with an average of 11h and 48min of daylight.
What is the average length of the day in December in Vierge des Trois Tonneaux?
In Vierge des Trois Tonneaux, French Guiana, the average day length in December is 11h and 51min.
What time are sunrise and sunset in December in Vierge des Trois Tonneaux?
On the first day of December, sunrise is at 06:26 and sunset at 18:17. On the last day of the month, sunrise is at 06:40 and sunset at 18:31 -03.
How many hours of sunshine does Vierge des Trois Tonneaux have in December?
The average sunshine duration in December in Vierge des Trois Tonneaux is 7.4h.
When is the lowest UV index in Vierge des Trois Tonneaux?
January through June and December, with an average maximum UV index of 6, are months with the lowest UV index.
How high is the UV index in December in Vierge des Trois Tonneaux?
In December, the average daily maximum UV index in Vierge des Trois Tonneaux is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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 - Vierge des Trois Tonneaux, French Guiana
Average temperature in December
Vierge des Trois Tonneaux, French Guiana
  • Average high temperature in December: 28.6°C

The warmest months (with the highest average high temperature) are September and October (30.9°C).
The month with the lowest average high temperature is February (27.5°C).

  • Average low temperature in December: 24.7°C

The month with the highest average low temperature is November (25.1°C).
The coldest month (with the lowest average low temperature) is January (24.2°C).

Average pressure in December - Vierge des Trois Tonneaux, French Guiana
Average pressure in December
Vierge des Trois Tonneaux, French Guiana
  • Average pressure in December: 1010.9mbar

The months with the highest atmospheric pressure are June and July (1013.1mbar).
The month with the lowest atmospheric pressure is November (1009.7mbar).

Average wind speed in December - Vierge des Trois Tonneaux, French Guiana
Average wind speed in December
Vierge des Trois Tonneaux, French Guiana
  • Average wind speed in December: 13.6km/h

The windiest month (with the highest average wind speed) is February (15.3km/h).
The calmest month (with the lowest average wind speed) is July (9.7km/h).

Average humidity in December - Vierge des Trois Tonneaux, French Guiana
Average humidity in December
Vierge des Trois Tonneaux, French Guiana
  • Average humidity in December: 82%

The months with the highest relative humidity are February and May (84%).
The months with the lowest relative humidity are September and October (77%).

Average rainfall in December - Vierge des Trois Tonneaux, French Guiana
Average rainfall in December
Vierge des Trois Tonneaux, French Guiana
  • Average rainfall in December: 227mm

The wettest month (with the highest rainfall) is May (279mm).
The driest month (with the least rainfall) is September (29mm).

Average rainfall days in December - Vierge des Trois Tonneaux, French Guiana
Average rainfall days in December
Vierge des Trois Tonneaux, French Guiana
  • Average rainfall days in December: 26 days

The month with the highest number of rainy days is May (29.6 days).
The months with the least rainy days are September and October (14.3 days).

Average daylight in December / Average sunshine in December - Vierge des Trois Tonneaux, French Guiana
Average daylight in December /
Average sunshine in December
Vierge des Trois Tonneaux, French Guiana
  • Average daylight in December: 11h and 5min

The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 48min).

  • Average sunshine in December: 7h and 2min

The month with the most sunshine is September (Average sunshine: 9h and 18min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).

Average sunshine days in December - Vierge des Trois Tonneaux, French Guiana
Average sunshine days in December
Vierge des Trois Tonneaux, French Guiana
  • Average sunshine days in December: 3.2 days

The month with the most sunshine days is October (13.2 days).
The month with the least sunshine days is May (0.6 days).

Average UV index in December - Vierge des Trois Tonneaux, French Guiana
Average UV index in December
Vierge des Trois Tonneaux, French Guiana
  • Average UV index in December: 6

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

Average cloud cover in December - Vierge des Trois Tonneaux, French Guiana
Average cloud cover in December
Vierge des Trois Tonneaux, French Guiana
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 25).

Average visibility in December - Vierge des Trois Tonneaux, French Guiana
Average visibility in December
Vierge des Trois Tonneaux, French Guiana
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, August, September, October, November and December (10km).
The months with the lowest visibility are May, June and July (9km).

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