Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The shift from November to December includes a small decrease in the average high-temperature, from a hot 33.1°C (91.6°F) to a moderately hot 29.9°C (85.8°F). Nightly temperatures drop to an average low of 22.1°C (71.8°F) in December.Heat index
During December, the heat index is evaluated at a fiery hot 39°C (102.2°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.The metrics for the heat index are tailored for both shady environments and light winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.
Humidity
In Roche Ara, the average relative humidity in December is 86%.Rainfall
In Roche Ara, in December, during 25.3 rainfall days, 154mm (6.06") of precipitation is typically accumulated. Throughout the year, in Roche Ara, there are 280.4 rainfall days, and 1281mm (50.43") of precipitation is accumulated.Daylight
With an average of 11h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 06:21 and sunset at 18:15. On the last day of December, sunrise is at 06:35 and sunset at 18:28 -03.
Sunshine
In December, the average sunshine in Roche Ara is 6h.UV index
The months with the lowest UV index are January through June and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 6 in December, converts into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
How hot is it in Roche Ara in December?
What is the average humidity in December in Roche Ara?
How much does it rain in Roche Ara in December?
What is the month with the shortest days in Roche Ara?
How many hours of daylight does Roche Ara have in December?
When is the sunrise / sunset in December in Roche Ara?
How long on average sun shines in December in Roche Ara?
When is the lowest UV index in Roche Ara?
What is the UV index intensity in December in Roche Ara?
Average temperature in December
Roche Ara, French Guiana
- Average high temperature in December: 29.9°C
The warmest month (with the highest average high temperature) is October (33.9°C).
The month with the lowest average high temperature is February (27.8°C).
- Average low temperature in December: 22.1°C
The month with the highest average low temperature is April (22.5°C).
The coldest month (with the lowest average low temperature) is July (21.5°C).
Average pressure in December
Roche Ara, French Guiana
- Average pressure in December: 1010.8mbar
The month with the highest atmospheric pressure is July (1013.2mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in December
Roche Ara, French Guiana
- Average wind speed in December: 5.6km/h
The windiest month (with the highest average wind speed) is October (6.2km/h).
The calmest month (with the lowest average wind speed) is June (4.3km/h).
Average humidity in December
Roche Ara, French Guiana
- Average humidity in December: 86%
The month with the highest relative humidity is May (91%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Roche Ara, French Guiana
- Average rainfall in December: 154mm
The wettest month (with the highest rainfall) is May (215mm).
The driest month (with the least rainfall) is October (20mm).
Average rainfall days in December
Roche Ara, French Guiana
- Average rainfall days in December: 25.3 days
The month with the highest number of rainy days is May (29.8 days).
The month with the least rainy days is October (10.9 days).
Average daylight in December /
Average sunshine in December
Roche Ara, 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 54min).
- Average sunshine in December: 6h and 0min
The month with the most sunshine is September (Average sunshine: 8h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in December
Roche Ara, French Guiana
- Average sunshine days in December: 3.6 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is April (0.5 days).
Average UV index in December
Roche Ara, 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
Roche Ara, French Guiana
- Average cloud cover in December: 66
The month with the most cloud cover is February (Cloud cover 77).
The month with the least cloud cover is October (Cloud cover 45).
Average visibility in December
Roche Ara, French Guiana
- Average visibility in December: 6km
The months with the highest visibility are September, October and November (7km).
The months with the lowest visibility are January, February, March, April, May, June, July, August and December (6km).
Roche Ara, French Guiana
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