January weather forecast
Gaillot, French Guiana

January, like December, in Gaillot, French Guiana, is another warm winter month, with temperature in the range of an average low of 22.4°C (72.3°F) and an average high of 29.4°C (84.9°F).

Temperature

The onset of January marks an average high-temperature of a moderately hot 29.4°C (84.9°F), hardly differing from December's 30.2°C (86.4°F). January nights cool down to an average low-temperature of 22.4°C (72.3°F).

Heat index

January's mean heat index is evaluated at a torrid 36°C (96.8°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The average relative humidity in January is 82%.

Rainfall

In Gaillot, French Guiana, during January, the rain falls for 23.6 days and regularly aggregates up to 54mm (2.13") of precipitation. In Gaillot, during the entire year, the rain falls for 253 days and collects up to 878mm (34.57") of precipitation.

Daylight

In Gaillot, the average length of the day in January is 11h and 52min.
On the first day of the month, sunrise is at 06:43 and sunset at 18:32. On the last day of January, in Gaillot, sunrise is at 06:50 and sunset at 18:45 -03.

Sunshine

The average sunshine in January is 6.3h.

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 value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In January, the average maximum UV index of 6 translates into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.