September weather forecast
Médeyre, French Guiana

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

Temperature

Médeyre ushers in September with an average high-temperature of a still hot 32.7°C (90.9°F), showing a close resemblance to the previous month. In September, in Médeyre, the average low-temperature is a pleasant 22.5°C (72.5°F).

Heat index

For September, the heat index is computed to be a life-threatening hot 47°C (116.6°F). Notice: Heat cramps and heat exhaustion are likely. Continued strenuous activity might lead to heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical 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.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

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

Rainfall

In Médeyre, in September, it is raining for 11.5 days, with typically 26mm (1.02") of accumulated precipitation. In Médeyre, 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 is 12h and 9min.
On the first day of September, sunrise is at 06:27 and sunset at 18:40. On the last day of the month, sunrise is at 06:22 and sunset at 18:26 -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 value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In September, a regular UV index of 7 translates into these guidelines:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.