September weather forecast
Organabo, French Guiana

September in Organabo continues the trend of warm and relatively dry conditions. Rainfall inches closer to the annual low, leading to clearer days with enhanced visibility. The city's residents enjoy the most sunshine of the year during September, with an average of 9.1 hours of sunshine daily. With a UV index of 7 and temperatures nearing their maximum at 32.7°C (90.9°F), it is advisable to protect against heat and sun exposure. Despite less rainfall, the lush vegetation throughout Organabo remains, thanks to the warm temperatures nurturing plant growth.

Temperature

The arrival of September sees a recorded average high-temperature of a still hot 32.7°C (90.9°F), showing little divergence from the previous month's conditions. In Organabo, the expected average low-temperature for September is a pleasant 22.5°C (72.5°F).

Heat index

The heat index value during September is evaluated at a blazing hot 47°C (116.6°F). Take heed: Heat exhaustion and heat cramps are anticipated. Heatstroke is a potential outcome of continuous activity.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in September is 79%.

Rainfall

In Organabo, 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

In Organabo, the average length of the day in September is 12h and 9min.
On the first day of September in Organabo, French Guiana, sunrise is at 06:27 and sunset at 18:40. On the last day of the month, sunrise is at 06:21 and sunset at 18:25 -03.

Sunshine

The month with the most sunshine is September, 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 in Organabo. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. 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. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.