September weather forecast
Lamérique, French Guiana

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

Temperature

September's arrival registers an average high-temperature of a still tropical 34.1°C (93.4°F), closely aligning with the temperature of the previous month. During September nights, Lamérique documents a marked contrast from daily highs, with an average temperature of 20.5°C (68.9°F).

Heat index

For most parts of September, the heat index is estimated at a blazing hot 49°C (120.2°F). Watchful: Heat cramps and heat exhaustion are predicted. Continued exertion could lead to heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Lamérique, in September, it is raining for 14.3 days, with typically 36mm (1.42") of accumulated precipitation. Throughout the year, in Lamérique, there are 265.5 rainfall days, and 1078mm (42.44") of precipitation is accumulated.

Daylight

In Lamérique, the average length of the day in September is 12h and 8min.
On the first day of September in Lamérique, sunrise is at 06:26 and sunset at 18:37. On the last day of the month, sunrise is at 06:19 and sunset at 18:24 -03.

Sunshine

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

UV index

The months with the highest UV index are August through November, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 7 during September translates into the following guidance:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.