March weather forecast
Siminiout, French Guiana

The first month of the spring, March, is still a warm month in Siminiout, French Guiana, with an average temperature ranging between min 22.2°C (72°F) and max 28.8°C (83.8°F).

Temperature

The average high-temperature during March registers at a still moderately hot 28.8°C (83.8°F), maintaining a close resemblance to the previous month. During March, Siminiout observes a consistent average nighttime temperature of 22.2°C (72°F).

Heat index

The heat index value during March is appraised at a torrid 36°C (96.8°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are especially vital to children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In March, the average relative humidity is 89%.

Rainfall

In Siminiout, during March, the rain falls for 25.9 days and regularly aggregates up to 86mm (3.39") of precipitation. Throughout the year, in Siminiout, there are 270.6 rainfall days, and 1131mm (44.53") of precipitation is accumulated.

Daylight

The average length of the day in March is 12h and 6min.
On the first day of March in Siminiout, sunrise is at 06:41 and sunset at 18:45. On the last day of the month, sunrise is at 06:30 and sunset at 18:39 -03.

Sunshine

In Siminiout, the average sunshine in March is 4.6h.

UV index

The months with the lowest UV index in Siminiout are January through July, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: A maximum high UV index of 6 in March translates into the following recommendations:
Fend off overexposure. Sun protection is vital. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.