September weather forecast
Arataï, French Guiana

September ushers in a warm and sunny climate in Arataï, French Guiana. The city experiences the highest average temperature of the year at 33.7°C (92.7°F) along with the least amount of rainfall. On the brighter side, these conditions make it the sunniest month with an average of 8.8 sunshine hours. Nevertheless, the heat is tempered by a rise in wind speed to 6km/h (3.7mph) on average. The crisp and clear skies of September create an ideal setting for evening strolls by the river or picnic in the park.

Temperature

As Arataï steps into September, the average high-temperature is measured at a still hot 33.7°C (92.7°F), displaying minor differences from August's 32.3°C (90.1°F). Arataï, in September, observes a steady average low-temperature of 21.8°C (71.2°F).

Heat index

September's mean heat index is appraised at a life-threatening hot 49°C (120.2°F). Remain cautious: Heat cramps along with heat exhaustion are foreseeable. Ongoing activity may precipitate heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In Arataï, the average relative humidity in September is 76%.

Rainfall

September is the month with the least rainfall in Arataï. Rain falls for 12.5 days and accumulates 21mm (0.83") of precipitation.

Daylight

In Arataï, the average length of the day in September is 12h and 8min.
On the first day of September in Arataï, sunrise is at 06:24 and sunset at 18:35. On the last day of the month, sunrise is at 06:17 and sunset at 18:22 -03.

Sunshine

September has the most sunshine of the year, with an average of 8.8h of sunshine.

UV index

August through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: An average UV index of 7 in September transforms into this advice:
Shun overexposure. Protection from sun ravages is indispensable. 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. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.