September weather forecast
Sapotille, French Guiana

September, the first month of the autumn in Sapotille, is still a hot month, with an average temperature varying between 22.5°C (72.5°F) and 32.7°C (90.9°F).

Temperature

The arrival of September brings an average high-temperature of a still hot 32.7°C (90.9°F), subtly diverging from August's 32°C (89.6°F). Throughout September, the temperature in Sapotille, French Guiana, falls to an average low of 22.5°C (72.5°F).

Heat index

September's heat index is appraised at a blazing hot 47°C (116.6°F). Observe: Heat exhaustion and heat cramps are probable. Heatstroke is on the horizon with prolonged exertion.
The standards for the heat index are set for locations in shade and under light breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. 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. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Sapotille, the average relative humidity in September is 79%.

Rainfall

In Sapotille, during September, the rain falls for 11.5 days and regularly aggregates up to 26mm (1.02") of precipitation. Throughout the year, there are 253 rainfall days, and 878mm (34.57") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 9min.
On the first day of the month, sunrise is at 06:27 and sunset at 18:40. On the last day of September, in Sapotille, sunrise is at 06:21 and sunset at 18:26 -03.

Sunshine

September has the most sunshine of the year in Sapotille, with an average of 9.1h of sunshine.

UV index

July through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 7 during September leads to these instructions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.