January weather forecast
Dégrad Fourmi, French Guiana

January, the same as December, is a moderately hot winter month in Dégrad Fourmi, French Guiana, with an average temperature varying between 29.7°C (85.5°F) and 20.8°C (69.4°F).

Temperature

In January, Dégrad Fourmi experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 30.8°C (87.4°F) in December to a moderately hot 29.7°C (85.5°F). Nightly temperatures in Dégrad Fourmi drop to an average low of 20.8°C (69.4°F) in January.

Heat index

The heat index for January is evaluated at a torrid 39°C (102.2°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. 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 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In Dégrad Fourmi, the average relative humidity in January is 87%.

Rainfall

In Dégrad Fourmi, during January, the rain falls for 26.8 days and regularly aggregates up to 86mm (3.39") of precipitation. In Dégrad Fourmi, during the entire year, the rain falls for 265.5 days and collects up to 1078mm (42.44") of precipitation.

Daylight

In January, the average length of the day in Dégrad Fourmi is 11h and 57min.
On the first day of January, sunrise is at 06:39 and sunset at 18:35. On the last day of the month, sunrise is at 06:48 and sunset at 18:46 -03.

Sunshine

The average sunshine in January in Dégrad Fourmi is 4.9h.

UV index

January, March and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: An average UV index of 5 in January transforms into this advice:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.