September weather forecast
Citron, French Guiana

The first month of the autumn, September, is still a tropical month in Citron, French Guiana, with an average temperature fluctuating between 21.1°C (70°F) and 34.3°C (93.7°F).

Temperature

As August turns into September, the average high-temperatures rest at a still hot 34.3°C (93.7°F), showing a minor variation from the prior month. Throughout September, Citron registers a distinct decrease from daytime highs, reaching an average low of 21.1°C (70°F).

Heat index

September's mean heat index is calculated to be 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.
Heat index readings emphasize conditions of light breezes and shaded spots. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

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

Rainfall

The month with the least rainfall is September, when the rain falls for 10.3 days and typically collects 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 06:29 and sunset at 18:41. On the last day of the month, sunrise is at 06:23 and sunset at 18:27 -03.

Sunshine

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

UV index

The months with the highest UV index are July through November, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 7 in September translates into these instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.