April weather forecast
Grand Usine, French Guiana

April, like March, in Grand Usine, French Guiana, is another warm spring month, with an average temperature fluctuating between 21.5°C (70.7°F) and 29.8°C (85.6°F).

Temperature

April's onset records a minor alteration in the average high-temperature to a warm 29.8°C (85.6°F) from March's 30.1°C (86.2°F). The nighttime temperature in Grand Usine dips to a pleasant 21.5°C (70.7°F) on average during April.

Heat index

In April, the heat index is computed to be a scorching 40°C (104°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In April, the average relative humidity is 89%.

Rainfall

In April, the rain falls for 26.3 days. Throughout April, 129mm (5.08") of precipitation is accumulated. In Grand Usine, during the entire year, the rain falls for 265.5 days and collects up to 1078mm (42.44") of precipitation.

Daylight

The average length of the day in April is 12h and 11min.
On the first day of the month, sunrise is at 06:30 and sunset at 18:39. On the last day of April, in Grand Usine, sunrise is at 06:21 and sunset at 18:35 -03.

Sunshine

In April, the average sunshine in Grand Usine is 4.6h.

UV index

The average daily maximum UV index in April is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during April leads to these instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.