September weather forecast
Carrefour De Mana, French Guiana

September

Weather in September

The first month of the autumn, September, is also a hot month in Carrefour De Mana, French Guiana, with an average temperature ranging between min 22.5°C (72.5°F) and max 32.7°C (90.9°F).

Temperature

September's arrival registers an average high-temperature of a still tropical 32.7°C (90.9°F), closely aligning with the temperature of the previous month. In September, the temperature drops to an average of 22.5°C (72.5°F) at night.

Heat index

September's average heat index is appraised at a life-threatening hot 47°C (116.6°F). Guard: Heat exhaustion and heat cramps are foreseeable. Prolonged effort may bring about heatstroke.
Heat index determinations are made taking into account the shade and light air movements. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In Carrefour De Mana, the average relative humidity in September is 79%.

Rainfall

In Carrefour De Mana, in September, during 11.5 rainfall days, 26mm (1.02") of precipitation is typically accumulated. Throughout the year, in Carrefour De Mana, there are 253 rainfall days, and 878mm (34.57") of precipitation is accumulated.

Daylight

In September, the average length of the day in Carrefour De Mana is 12h and 9min.
On the first day of the month, sunrise is at 06:29 and sunset at 18:42. On the last day of September, sunrise is at 06:23 and sunset at 18:27 -03.

Sunshine

September has the most sunshine of the year, with an average of 9.1h of sunshine.

UV index

July through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, an average UV index of 7 transforms into the following instructions:
Ward off overexposure. Defence against solar harm is crucial. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.

Frequently asked questions

How hot does it get in Carrefour De Mana in September?
The high-temperature, in September, in Carrefour De Mana, is 32.7°C (90.9°F), while the low-temperature averages to 22.5°C (72.5°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in September is appraised at 47°C (116.6°F).
What is the average humidity in September in Carrefour De Mana?
In September, the average relative humidity in Carrefour De Mana is 79%.
How much does it rain in Carrefour De Mana in September?
In Carrefour De Mana, in September, it is raining for 11.5 days, with typically 26mm (1.02") of accumulated precipitation.
How many hours of daylight does Carrefour De Mana have in September?
The average day length in September in Carrefour De Mana, French Guiana, is 12h and 9min.
When is the sunrise / sunset in September in Carrefour De Mana?
On the first day of September in Carrefour De Mana, sunrise is at 06:29 and sunset at 18:42. On the last day of the month, sunrise is at 06:23 and sunset at 18:27 -03.
What month has the most sunshine in Carrefour De Mana?
The month with the most sunshine is September, with an average of 9.1h of sunshine.
How long on average sun shines in September in Carrefour De Mana?
In September, the average sunshine duration is 9.1h.
When is the highest UV index in Carrefour De Mana?
The months with the highest UV index are July through November, with an average maximum UV index of 7.
What is the UV index reading in September in Carrefour De Mana?
In Carrefour De Mana, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Carrefour De Mana, French Guiana
Average temperature in September
Carrefour De Mana, French Guiana
  • Average high temperature in September: 32.7°C

The warmest month (with the highest average high temperature) is October (33.1°C).
The month with the lowest average high temperature is February (29.1°C).

  • Average low temperature in September: 22.5°C

The month with the highest average low temperature is May (23.3°C).
The coldest month (with the lowest average low temperature) is July (22.2°C).

Average pressure in September - Carrefour De Mana, French Guiana
Average pressure in September
Carrefour De Mana, French Guiana
  • Average pressure in September: 1011.6mbar

The months with the highest atmospheric pressure are June and July (1012.9mbar).
The month with the lowest atmospheric pressure is November (1009.5mbar).

Average wind speed in September - Carrefour De Mana, French Guiana
Average wind speed in September
Carrefour De Mana, French Guiana
  • Average wind speed in September: 7.7km/h

The windiest months (with the highest average wind speed) are February and March (9.5km/h).
The calmest month (with the lowest average wind speed) is July (6.4km/h).

Average humidity in September - Carrefour De Mana, French Guiana
Average humidity in September
Carrefour De Mana, French Guiana
  • Average humidity in September: 79%

The month with the highest relative humidity is June (88%).
The month with the lowest relative humidity is October (77%).

Average rainfall in September - Carrefour De Mana, French Guiana
Average rainfall in September
Carrefour De Mana, French Guiana
  • Average rainfall in September: 26mm

The wettest month (with the highest rainfall) is May (137mm).
The driest month (with the least rainfall) is October (23mm).

Average rainfall days in September - Carrefour De Mana, French Guiana
Average rainfall days in September
Carrefour De Mana, French Guiana
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is May (28 days).
The month with the least rainy days is September (11.5 days).

Average daylight in September / Average sunshine in September - Carrefour De Mana, French Guiana
Average daylight in September /
Average sunshine in September
Carrefour De Mana, French Guiana
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 48min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is September (Average sunshine: 9h and 6min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

Average sunshine days in September - Carrefour De Mana, French Guiana
Average sunshine days in September
Carrefour De Mana, French Guiana
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is October (16 days).
The month with the least sunshine days is May (1.8 days).

Average UV index in September - Carrefour De Mana, French Guiana
Average UV index in September
Carrefour De Mana, French Guiana
  • Average UV index in September: 7

The months with the highest UV index are July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June and December (UV index 6).

Average cloud cover in September - Carrefour De Mana, French Guiana
Average cloud cover in September
Carrefour De Mana, French Guiana
  • Average cloud cover in September: 34

The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 34).

Average visibility in September - Carrefour De Mana, French Guiana
Average visibility in September
Carrefour De Mana, French Guiana
  • Average visibility in September: 8km

The months with the highest visibility are February, March and April (9km).
The months with the lowest visibility are June, July and August (7km).

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