April weather forecast
Grand-Santi, French Guiana

April's weather in Grand-Santi carries an upward trend in terms of temperature, accompanied by a subtle increase in humidity levels. This month's climatic patterns warn against potential UV exposure, considering the constantly stable UV index of 6. With air pressure remaining the same at 1011.8mb, the general weather poses no major surprises. April differs from others with an increase in rainfall, peaking at 114mm (4.49"), which is an increase compared to earlier months.

Temperature

April's advent in Grand-Santi, French Guiana, notes a subtle adjustment in average high-temperature to a still hot 30.2°C (86.4°F) from March. The mean low-temperature during April nights is a pleasant 21.6°C (70.9°F).

Heat index

In April, the average heat index is calculated to be a blistering 40°C (104°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate 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. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In April, the average relative humidity is 87%.

Rainfall

In April, the rain falls for 26.8 days. Throughout April, 114mm (4.49") of precipitation is accumulated. Throughout the year, in Grand-Santi, there are 259.6 rainfall days, and 915mm (36.02") of precipitation is accumulated.

Daylight

In Grand-Santi, French Guiana, the average length of the day in April is 12h and 13min.
On the first day of April in Grand-Santi, sunrise is at 06:36 and sunset at 18:46. On the last day of the month, sunrise is at 06:26 and sunset at 18:42 -03.

Sunshine

In Grand-Santi, French Guiana, the average sunshine in April is 5.1h.

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, 6 during April, leads to the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. 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. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.