January weather forecast
Barthélemy, French Guiana

Barthélemy in January is often moist due to frequent rains with rainfall reaching 154mm (6.06"). The city experiences a gradual change in weather from the previous year as temperatures range from 24°C (75.2°F) as the minimum to a maximum of 28°C (82.4°F). Humidity levels remain fairly consistent, lending a dampness to the air that visitors will quickly notice. Despite the abundant rainfall, Barthélemy still receives approximately 11.9 hours of daylight each day. This combination of warmth, high humidity, and frequent rainfall forms the core character of January's weather profile in Barthélemy.

Temperature

The advent of January in Barthélemy, French Guiana, reveals an average high-temperature of a still moderately hot 28°C (82.4°F), showing minimal difference from the prior month. Barthélemy upholds a consistent average temperature of 24°C (75.2°F) throughout the nights of January.

Heat index

The heat index value during January is evaluated at a tropical 33°C (91.4°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.

Humidity

In January, the average relative humidity in Barthélemy is 84%.

Rainfall

In January, the rain falls for 28 days. Throughout January, 154mm (6.06") of precipitation is accumulated. Throughout the year, in Barthélemy, French Guiana, there are 277 rainfall days, and 1707mm (67.2") of precipitation is accumulated.

Daylight

In January, the average length of the day in Barthélemy is 11h and 55min.
On the first day of the month, sunrise is at 06:37 and sunset at 18:30. On the last day of January, in Barthélemy, sunrise is at 06:45 and sunset at 18:41 -03.

Sunshine

The average sunshine in January in Barthélemy is 6.8h.

UV index

January through May and December, with an average maximum UV index of 6, are months with the lowest UV index in Barthélemy. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, the maximum UV index of 6 translates into these guidelines:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.