December weather forecast
Chire, French Guiana

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

Temperature

December's climate shows a minor adjustment in average high-temperatures to a still tropical 30.2°C (86.4°F) from November's 32.4°C (90.3°F). An average low-temperature of 22.7°C (72.9°F) is common during the nights of December.

Heat index

Throughout December, the heat index is estimated at a very hot 39°C (102.2°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Research indicates the heat index considers values in shaded locales and with light winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In Chire, the average relative humidity in December is 83%.

Rainfall

In Chire, in December, during 21.9 rainfall days, 84mm (3.31") of precipitation is typically accumulated. In Chire, during the entire year, the rain falls for 253 days and collects up to 878mm (34.57") of precipitation.

Daylight

December has the shortest days of the year in Chire, with an average of 11h and 48min of daylight.
On the first day of December in Chire, sunrise is at 06:28 and sunset at 18:18. On the last day of the month, sunrise is at 06:43 and sunset at 18:31 -03.

Sunshine

In December, the average sunshine is 6.6h.

UV index

The months with the lowest UV index in Chire, 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 vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In December, a regular UV index of 6 translates into these guidelines:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. 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. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.