December weather forecast
Îlet Tortue, French Guiana

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Weather in December

The first month of the winter, December, is also a moderately hot month in Îlet Tortue, French Guiana, with an average temperature ranging between max 28.6°C (83.5°F) and min 24.7°C (76.5°F).

Temperature

As November transitions into December, the average high-temperature rests at a moderately hot 28.6°C (83.5°F), maintaining a close resemblance to the previous month. Îlet Tortue reports an average low temperature of 24.7°C (76.5°F) in December, a minor decrease from the day's highs.

Heat index

December's heat index is evaluated at a hot 34°C (93.2°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.

Humidity

In Îlet Tortue, the average relative humidity in December is 82%.

Rainfall

In Îlet Tortue, French Guiana, in December, during 26 rainfall days, 227mm (8.94") of precipitation is typically accumulated. In Îlet Tortue, 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 is December, with an average of 11h and 48min of daylight.
On the first day of December, sunrise is at 06:25 and sunset at 18:16. On the last day of the month, sunrise is at 06:40 and sunset at 18:30 -03.

Sunshine

In December, the average sunshine 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. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: In December, the UV index of 6 transforms into the following advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.

Frequently asked questions

How hot does it get in Îlet Tortue in December?

During December, Îlet Tortue experiences an average high-temperature of 28.6°C (83.5°F) and a low-temperature of 24.7°C (76.5°F). In December, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 34°C (93.2°F).

What is the average humidity in December in Îlet Tortue?

In December, the average relative humidity in Îlet Tortue is 82%.

How many days does it rain in December in Îlet Tortue?

In Îlet Tortue, French Guiana, during December, the rain falls for 26 days and regularly aggregates up to 227mm (8.94") of precipitation.

What is the month with the shortest days in Îlet Tortue?

With an average of 11h and 48min of daylight, December has the shortest days of the year in Îlet Tortue, French Guiana.

What is the average length of the day in December in Îlet Tortue?

In December, the average day length in Îlet Tortue, French Guiana, is 11h and 50min.

When is the sunrise / sunset in December in Îlet Tortue?

On the first day of December, sunrise is at 06:25 and sunset at 18:16. On the last day of the month, sunrise is at 06:40 and sunset at 18:30 -03.

How long on average sun shines in December in Îlet Tortue?

In December, the average sunshine duration in Îlet Tortue is 7.4h.

What are the months with the lowest UV index in Îlet Tortue?

January through June and December, with an average maximum UV index of 6, are months with the lowest UV index in Îlet Tortue.

How high is the UV index in December in Îlet Tortue?

In Îlet Tortue, French Guiana, the average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.

Average temperature in December
Îlet Tortue, French Guiana

Average temperature in December - Îlet Tortue, 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
Îlet Tortue, French Guiana

Average pressure in December - Îlet Tortue, 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
Îlet Tortue, French Guiana

Average wind speed in December - Îlet Tortue, 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
Îlet Tortue, French Guiana

Average humidity in December - Îlet Tortue, 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
Îlet Tortue, French Guiana

Average rainfall in December - Îlet Tortue, 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
Îlet Tortue, French Guiana

Average rainfall days in December - Îlet Tortue, 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
Îlet Tortue, French Guiana

Average daylight in December / Average sunshine in December - Îlet Tortue, 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
Îlet Tortue, French Guiana

Average sunshine days in December - Îlet Tortue, 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
Îlet Tortue, French Guiana

Average UV index in December - Îlet Tortue, 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
Îlet Tortue, French Guiana

Average cloud cover in December - Îlet Tortue, 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
Îlet Tortue, French Guiana

Average visibility in December - Îlet Tortue, 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).

Îlet Tortue, French Guiana

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