September weather forecast
Pina, French Guiana

September, the first month of the autumn in Pina, is still a hot month, 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

Pina marks the arrival of September with an average high-temperature of a still tropical 34.1°C (93.4°F), hardly different from August's 32.8°C (91°F). Pina's September nights see a large temperature deviation, with temperatures resting at a low of 20.5°C (68.9°F).

Heat index

September's average heat index is appraised at a blazing hot 49°C (120.2°F). Be prepared: Heat cramps and heat exhaustion are probable. Continued activity may lead to heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to 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. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The average relative humidity in September in Pina is 74%.

Rainfall

In Pina, during September, the rain falls for 14.3 days and regularly aggregates up to 36mm (1.42") of precipitation. Throughout the year, there are 265.5 rainfall days, and 1078mm (42.44") of precipitation is accumulated.

Daylight

In September, the average length of the day in Pina is 12h and 8min.
On the first day of September, sunrise is at 06:26 and sunset at 18:35. On the last day of the month, sunrise is at 06:18 and sunset at 18:24 -03.

Sunshine

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

UV index

The months with the highest UV index in Pina, French Guiana, are August through November, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In September, the maximum UV index of 7 suggests these recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun.