September weather forecast
Mayman, French Guiana

September, the first month of the autumn in Mayman, is still a tropical month, with temperature in the range of an average low of 22.5°C (72.5°F) and an average high of 32.7°C (90.9°F).

Temperature

September's climate shows a minor adjustment in average high-temperatures to a still tropical 32.7°C (90.9°F) from August's 32°C (89.6°F). Mayman experiences an average low-temperature of 22.5°C (72.5°F) in the month of September.

Heat index

The average heat index in September is evaluated at a burning hot 47°C (116.6°F). Be prepared: Heat cramps and heat exhaustion are probable. Continued activity may lead to heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

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

Rainfall

In Mayman, in September, it is raining for 11.5 days, with typically 26mm (1.02") of accumulated precipitation. In Mayman, 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 Mayman is 12h and 9min.
On the first day of September, sunrise is at 06:30 and sunset at 18:43. On the last day of the month, sunrise is at 06:24 and sunset at 18:29 -03.

Sunshine

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

UV index

The months with the highest UV index in Mayman are July through November, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: An average maximum UV index of 7 in September leads to these recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. 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. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.