September weather forecast
Saul, French Guiana

Entering September, residents of Saul continue to enjoy less rainfall, with a drop to just 36mm (1.42"), the lowest mark of the year. Temperatures only slightly decrease from previous months, but it hardly affects the overall warmth of September. The city revels under the brilliant display of the sun illuminating the days for up to 8.3 hours. With lowered cloud cover, residents and visitors alike can indulge in the grandeur of clear skies. As the nine-month mark crosses, a renewed progression towards the high humidity and frequent rains of the earlier months begins.

Temperature

The average high-temperature in Saul during September registers at a still tropical 34.1°C (93.4°F), maintaining a close resemblance to the previous month. In September, a remarkable difference from daytime highs is noted, as Saul records an average temperature of 20.5°C (68.9°F) during the night.

Heat index

During September, the heat index is computed to be a life-threatening hot 49°C (120.2°F). Be cautious: Heat exhaustion along with heat cramps are predicted. Heatstroke is a possible consequence of continuous physical effort.
Remember that heat index calculations are made for conditions in the shade with light wind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. 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. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The average relative humidity in September in Saul is 74%.

Rainfall

In September, in Saul, the rain falls for 14.3 days. Throughout September, 36mm (1.42") of precipitation is accumulated. In Saul, 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 September in Saul is 12h and 8min.
On the first day of September in Saul, sunrise is at 06:27 and sunset at 18:38. On the last day of the month, sunrise is at 06:20 and sunset at 18:25 -03.

Sunshine

The months with the most sunshine are September and October, with an average of 8.8h of sunshine.

UV index

The months with the highest UV index in Saul are August through November, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index, 7 during September, leads to the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.