September weather forecast
Moucaya, French Guiana

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Weather in September

September, the first month of the autumn in Moucaya, is also a hot month, with temperature in the range of an average high of 32.7°C (90.9°F) and an average low of 22.5°C (72.5°F).

Temperature

Moucaya's average high-temperature in September is a still hot 32.7°C (90.9°F), indicating a subtle variation from August. The temperature lowers to an average of 22.5°C (72.5°F) during September nights.

Heat index

The heat index for September is calculated to be a life-threatening hot 47°C (116.6°F). Stay mindful: Heat exhaustion and heat cramps are likely. Heatstroke could follow extended physical effort.
The standards for the heat index are set for locations in shade and under light breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In September, the average relative humidity in Moucaya is 79%.

Rainfall

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

Daylight

The average length of the day in September is 12h and 9min.
On the first day of the month, sunrise is at 06:26 and sunset at 18:39. On the last day of September, in Moucaya, sunrise is at 06:21 and sunset at 18:25 -03.

Sunshine

With an average of 9.1h of sunshine, September has the most sunshine of the year in Moucaya.

UV index

The months with the highest UV index in Moucaya are July through November, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the maximum UV index of 7 transforms into these recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Jan 31, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How hot does it get in Moucaya in September?

The average high-temperature, in September, in Moucaya, is 32.7°C (90.9°F), while the average low-temperature is 22.5°C (72.5°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is calculated to be 47°C (116.6°F).

What is the average humidity in September in Moucaya?

The average relative humidity in September in Moucaya is 79%.

How much does it rain in Moucaya in September?

In September, in Moucaya, French Guiana, the rain falls for 11.5 days. Throughout September, 26mm (1.02") of precipitation is accumulated.

What is the average length of the day in September in Moucaya?

The average day length in September in Moucaya is 12h and 9min.

When is the sunrise / sunset in September in Moucaya?

In September, on the first day of the month, sunrise is at 06:26 and sunset at 18:39. On the last day of the month, in Moucaya, French Guiana, sunrise is at 06:21 and sunset at 18:25 -03.

What month has the most sunshine in Moucaya?

September has the most sunshine of the year in Moucaya, French Guiana, with an average of 9.1h of sunshine.

How many hours of sunshine does Moucaya have in September?

In Moucaya, the average sunshine duration in September is 9.1h.

What are the months with the highest UV index in Moucaya?

The months with the highest UV index in Moucaya, French Guiana, are July through November, with an average maximum UV index of 7.

What is the UV index reading in September in Moucaya?

In September, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Moucaya, French Guiana

Average temperature in September - Moucaya, 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
Moucaya, French Guiana

Average pressure in September - Moucaya, 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
Moucaya, French Guiana

Average wind speed in September - Moucaya, 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
Moucaya, French Guiana

Average humidity in September - Moucaya, 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
Moucaya, French Guiana

Average rainfall in September - Moucaya, 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
Moucaya, French Guiana

Average rainfall days in September - Moucaya, 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
Moucaya, French Guiana

Average daylight in September / Average sunshine in September - Moucaya, 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
Moucaya, French Guiana

Average sunshine days in September - Moucaya, 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
Moucaya, French Guiana

Average UV index in September - Moucaya, 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
Moucaya, French Guiana

Average cloud cover in September - Moucaya, 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
Moucaya, French Guiana

Average visibility in September - Moucaya, 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).

Moucaya, French Guiana

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