December weather forecast
Gaillot, French Guiana

December, the first month of the winter in Gaillot, is still a hot month, with an average temperature varying between 30.2°C (86.4°F) and 22.7°C (72.9°F).

Temperature

The shift into December records an average high-temperature of a still tropical 30.2°C (86.4°F), subtly varied from November's 32.4°C (90.3°F). An average low-temperature of 22.7°C (72.9°F) is observed during December nights in Gaillot.

Heat index

The heat index in December is evaluated at a torrid 39°C (102.2°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'real feel' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

The average relative humidity in December in Gaillot is 83%.

Rainfall

In Gaillot, during December, the rain falls for 21.9 days and regularly aggregates up to 84mm (3.31") of precipitation. Throughout the year, in Gaillot, there are 253 rainfall days, and 878mm (34.57") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 11h and 48min of daylight.
On the first day of the month, sunrise is at 06:28 and sunset at 18:19. On the last day of December, in Gaillot, sunrise is at 06:42 and sunset at 18:32 -03.

Sunshine

In Gaillot, French Guiana, the average sunshine in December is 6.6h.

UV index

The months with the lowest UV index in Gaillot, French Guiana, 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 risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 6 in December, converts into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.