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
December
Weather in December
Temperature
December's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from November's 34°C (93.2°F) to a still tropical 30.8°C (87.4°F). The average low-temperature, in December, is a pleasant 20.9°C (69.6°F).Heat index
December's mean heat index is estimated at a blistering 42°C (107.6°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.
Humidity
In December, the average relative humidity is 85%.Rainfall
In Dégrad Samson, in December, it is raining for 26.2 days, with typically 112mm (4.41") of accumulated precipitation. Throughout the year, there are 265.5 rainfall days, and 1078mm (42.44") of precipitation is accumulated.Daylight
December has the shortest days of the year in Dégrad Samson, with an average of 11h and 54min of daylight.On the first day of the month, sunrise is at 06:25 and sunset at 18:20. On the last day of December, sunrise is at 06:40 and sunset at 18:34 -03.
Sunshine
In December, the average sunshine in Dégrad Samson is 5.6h.UV index
January, March and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high daily UV index of 5 during December translates into the following directions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Around midday, solar radiation is most harmful; hence, exposure should be limited. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Dégrad Samson during December?
What is the average humidity in December in Dégrad Samson?
How many days does it rain in December in Dégrad Samson?
What is the month with the shortest days in Dégrad Samson?
How many hours of daylight does Dégrad Samson have in December?
When is the sunrise / sunset in December in Dégrad Samson?
How long on average sun shines in December in Dégrad Samson?
What are the months with the lowest UV index in Dégrad Samson?
What is the UV index reading in December in Dégrad Samson?
Average temperature in December
Dégrad Samson, French Guiana
- Average high temperature in December: 30.8°C
The warmest month (with the highest average high temperature) is October (34.9°C).
The month with the lowest average high temperature is February (29.3°C).
- Average low temperature in December: 20.9°C
The month with the highest average low temperature is May (21.9°C).
The coldest months (with the lowest average low temperature) are August and September (20.5°C).
Average pressure in December
Dégrad Samson, French Guiana
- Average pressure in December: 1010.7mbar
The months with the highest atmospheric pressure are June and July (1013mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).
Average wind speed in December
Dégrad Samson, French Guiana
- Average wind speed in December: 5.1km/h
The windiest months (with the highest average wind speed) are February, March and November (5.3km/h).
The calmest month (with the lowest average wind speed) is July (4.2km/h).
Average humidity in December
Dégrad Samson, French Guiana
- Average humidity in December: 85%
The month with the highest relative humidity is May (90%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Dégrad Samson, French Guiana
- Average rainfall in December: 112mm
The wettest month (with the highest rainfall) is May (192mm).
The driest month (with the least rainfall) is October (21mm).
Average rainfall days in December
Dégrad Samson, French Guiana
- Average rainfall days in December: 26.2 days
The months with the highest number of rainy days are January and March (26.8 days).
The month with the least rainy days is October (10.4 days).
Average daylight in December /
Average sunshine in December
Dégrad Samson, 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: 5h and 4min
The months with the most sunshine are September and October (Average sunshine: 8h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in December
Dégrad Samson, French Guiana
- Average sunshine days in December: 3.7 days
The month with the most sunshine days is October (17.3 days).
The month with the least sunshine days is February (1.8 days).
Average UV index in December
Dégrad Samson, French Guiana
- Average UV index in December: 5
The months with the highest UV index are August, September, October and November (UV index 7).
The months with the lowest UV index are January, March and December (UV index 5).
Average cloud cover in December
Dégrad Samson, French Guiana
- Average cloud cover in December: 72
The month with the most cloud cover is February (Cloud cover 81).
The month with the least cloud cover is October (Cloud cover 44).
Average visibility in December
Dégrad Samson, French Guiana
- Average visibility in December: 6km
The month with the highest visibility is October (8km).
The month with the lowest visibility is May (5km).
