September weather forecast
Délices, French Guiana

Délices undergoes the most significant drop in average rainfall in September, declining to 18mm (0.71") over 10.3 days. This is the period in the year when the skies of Délices are at their clearest. The reduction in rainfall combined with the decrease in clouds presents an opportunity for nature lovers to explore the city unfamiliarly. Despite the lessening downpour, the city remains vividly green and thriving. The dry trails invite residents and tourists alike for a pleasant walk or a brisk jog, to relish the post-rain freshness.

Temperature

Délices experiences an average high-temperature of a still hot 34.3°C (93.7°F) in September, subtly different from August's 33°C (91.4°F). Despite the hot September days, Délices's nights see an average temperature plunge to an agreeable 21.1°C (70°F).

Heat index

September's mean heat index is appraised at a burning hot 51°C (123.8°F). Take heed: Heat exhaustion and heat cramps are anticipated. Heatstroke is a potential outcome of continuous activity.
Remember that heat index calculations are made for conditions in the shade with light wind. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In Délices, the average relative humidity in September is 75%.

Rainfall

September is the month with the least rainfall. Rain falls for 10.3 days and accumulates 18mm (0.71") of precipitation.

Daylight

The average length of the day in September is 12h and 8min.
On the first day of September, sunrise is at 06:28 and sunset at 18:40. On the last day of the month, sunrise is at 06:22 and sunset at 18:27 -03.

Sunshine

The month with the most sunshine is September, with an average of 9.1h of sunshine.

UV index

The months with the highest UV index in Délices are July through November, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In September, the maximum UV index of 7 suggests these recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.