January weather forecast
Bienvenue, French Guiana

Bienvenue, French Guiana experiences a predominant wet weather pattern in January. A robust amount of rainfall, peaking at 92mm (3.62"), is accompanied by a high relative humidity of 88%, which saturates the city with moisture. The warmth of the city at the start of the year is relatively moderate, neither too stifling nor too cool. With the skies usually blanketed with 72% cloud coverage, heat from the sun is somewhat diminished. Nonetheless, the sun still peeks out for a brief, shining time, providing the city with periods of brightness amidst the clouds.

Temperature

Bienvenue commences January with an average high-temperature of a still warm 28.4°C (83.1°F), maintaining a close resemblance to the previous month. The average temperature during January nights is registered at a pleasant 22°C (71.6°F).

Heat index

Throughout January, the heat index is computed to be a sweltering 35°C (95°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In January, the average relative humidity in Bienvenue is 88%.

Rainfall

In January, in Bienvenue, the rain falls for 25.4 days. Throughout January, 92mm (3.62") of precipitation is accumulated. In Bienvenue, during the entire year, the rain falls for 270.6 days and collects up to 1131mm (44.53") of precipitation.

Daylight

In January, the average length of the day in Bienvenue is 11h and 58min.
On the first day of the month, sunrise is at 06:35 and sunset at 18:32. On the last day of January, in Bienvenue, sunrise is at 06:44 and sunset at 18:43 -03.

Sunshine

In January, the average sunshine in Bienvenue, French Guiana, is 5.2h.

UV index

January through July, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Bienvenue. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: In January, a daily maximum UV index of 6 leads to the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.