September weather forecast
Camp Maipouri, French Guiana

The first month of the autumn, September, is also a hot month in Camp Maipouri, French Guiana, with an average temperature ranging between min 22.5°C (72.5°F) and max 32.7°C (90.9°F).

Temperature

Transitioning into September, Camp Maipouri records an average high-temperature of a still tropical 32.7°C (90.9°F), almost identical to August's 32°C (89.6°F). During September, Camp Maipouri experiences an average low-temperature of 22.5°C (72.5°F) at night.

Heat index

September's mean heat index is calculated to be a burning hot 47°C (116.6°F). Take heed: Heat exhaustion and heat cramps are anticipated. Heatstroke is a potential outcome of continuous activity.
The metrics for the heat index are tailored for both shady environments and light winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering 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. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

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

Rainfall

In Camp Maipouri, in September, it is raining for 11.5 days, with typically 26mm (1.02") of accumulated precipitation. In Camp Maipouri, during the entire year, the rain falls for 253 days and collects up to 878mm (34.57") of precipitation.

Daylight

In September, the average length of the day in Camp Maipouri is 12h and 9min.
On the first day of September, sunrise is at 06:29 and sunset at 18:42. 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 health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 7 during September translates into the following directions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.