September weather forecast
Clement, French Guiana

September is characterized by sun-soaked days in Clement, marking the longest duration of sunlight for the year. The city also experiences a gradual reduction in temperatures as the summer begins to recede. Correspondingly, the decline in rainfall continues from the previous month, reaching a minimum of 21mm (0.83"). Eventually, the cloud cover also recedes paving the way for clearer skies. The wind speed slightly picks up, introducing a refreshing element to September's weather.

Temperature

The weather in Clement during September records an average high-temperature of a still tropical 33.7°C (92.7°F), closely mirroring the preceding month. Throughout the month of September, Clement sees a steady low-temperature average of 21.8°C (71.2°F).

Heat index

The heat index value during September is estimated at a life-threatening hot 49°C (120.2°F). Keep guard: Heat cramps and heat exhaustion are likely. Continued activity increases the risk of heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is found by incorporating humidity levels into the air temperature measurement. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

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

Rainfall

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

Daylight

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

Sunshine

September has the most sunshine of the year in Clement, French Guiana, with an average of 8.8h of sunshine.

UV index

The months with the highest UV index in Clement are August through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 7 during September translates into the following guidance:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.