September weather forecast
Grand Carbet, French Guiana

The first month of the autumn, September, is still a hot month in Grand Carbet, French Guiana, with temperature in the range of an average low of 20.5°C (68.9°F) and an average high of 34.1°C (93.4°F).

Temperature

Upon the beginning of September, Grand Carbet's high-temperatures register at a still hot 34.1°C (93.4°F), closely mirroring the preceding month. Throughout September, Grand Carbet acknowledges a distinct difference between its daytime highs and the steady low average of 20.5°C (68.9°F).

Heat index

The heat index value for September is evaluated at a burning hot 49°C (120.2°F). Alert: Heat cramps and heat exhaustion are likely to occur. Prolonged exertion can lead to heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

The average relative humidity in September is 74%.

Rainfall

In Grand Carbet, in September, it is raining for 14.3 days, with typically 36mm (1.42") of accumulated precipitation. In Grand Carbet, during the entire year, the rain falls for 265.5 days and collects up to 1078mm (42.44") of precipitation.

Daylight

In Grand Carbet, 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 18:40. On the last day of the month, sunrise is at 06:22 and sunset at 18:27 -03.

Sunshine

September and October, with an average of 8.8h of sunshine, are months with the most sunshine.

UV index

August through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average maximum UV index of 7 in September leads to these recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.