March weather forecast
Grand-Santi, French Guiana

The weather in March witnesses a marginal transition from the city’s regular climatic patterns with a direct reflection of these changes in rising temperatures. Moderate rainfall dictates the ambiance of the city, while a UV index of 6 dictates precautionary measures during outside activities. Grand-Santi's climatic behavior undergoes slight variations with negligible changes in air pressure, standing at 1011.8mb. The highlight of this month turns around an increase in sunshine durations, catching at 5 hours per day, showcasing a small rise in contrast to the beginning of the year.

Temperature

The advent of March in Grand-Santi sees the average high-temperature at a tropical 30.4°C (86.7°F), subtly shifted from February's 29.5°C (85.1°F). In the month of March, Grand-Santi witnesses a consistent average low-temperature of 21.3°C (70.3°F).

Heat index

March's average heat index is calculated to be a scorching 41°C (105.8°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In Grand-Santi, French Guiana, the average relative humidity in March is 85%.

Rainfall

In March, in Grand-Santi, the rain falls for 26.5 days. Throughout March, 70mm (2.76") of precipitation is accumulated. In Grand-Santi, during the entire year, the rain falls for 259.6 days and collects up to 915mm (36.02") of precipitation.

Daylight

The average length of the day in March is 12h and 6min.
On the first day of March, sunrise is at 06:48 and sunset at 18:50. On the last day of the month, sunrise is at 06:36 and sunset at 18:46 -03.

Sunshine

The average sunshine in March in Grand-Santi is 5h.

UV index

In March, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum UV index of 6 in March translates into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. 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. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.