September weather forecast
Saul, French Guiana

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Weather in September

Entering September, residents of Saul continue to enjoy less rainfall, with a drop to just 36mm (1.42"), the lowest mark of the year. Temperatures only slightly decrease from previous months, but it hardly affects the overall warmth of September. The city revels under the brilliant display of the sun illuminating the days for up to 8.3 hours. With lowered cloud cover, residents and visitors alike can indulge in the grandeur of clear skies. As the nine-month mark crosses, a renewed progression towards the high humidity and frequent rains of the earlier months begins.

Temperature

Saul experiences a transition to a still tropical 34.1°C (93.4°F) in average high-temperatures with the arrival of September, not greatly differing from August's 32.8°C (91°F). A marked difference from the daytime temperatures, Saul's nighttime temperature falls to an average low of 20.5°C (68.9°F) in September.

Heat index

September's average heat index is evaluated at a life-threatening hot 49°C (120.2°F). Observe: Heat exhaustion and heat cramps are probable. Heatstroke is on the horizon with prolonged exertion.
Heat index specifics point out values are for conditions of shade and a slight breeze. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Saul, 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 Saul, the average length of the day in September is 12h and 8min.
On the first day of the month, sunrise is at 06:27 and sunset at 18:38. On the last day of September, sunrise is at 06:20 and sunset at 18:25 -03.

Sunshine

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

UV index

August through November, with an average maximum UV index of 7, are months with the highest UV index. 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 daily high UV index of 7 in September translates into this advice:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.

Frequently asked questions

How hot does it get in September?

September temperatures vary between a high-temperature of 34.1°C (93.4°F) and a low-temperature of 20.5°C (68.9°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in September is evaluated at 49°C (120.2°F).

What is the average humidity in September?

In Saul, the average relative humidity in September is 74%.

How many days does it rain in September?

In Saul, French Guiana, in September, during 14.3 rainfall days, 36mm (1.42") of precipitation is typically accumulated.

How many hours of daylight does Saul have in September?

The average day length in September is 12h and 8min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 06:27 and sunset at 18:38. On the last day of the month, sunrise is at 06:20 and sunset at 18:25 -03.

What are the months with the most sunshine?

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

How many hours of sunshine does Saul have in September?

The average sunshine duration in September in Saul is 8.8h.

What are the months with the highest UV index?

The months with the highest UV index are August through November, with an average maximum UV index of 7.

What is the UV index reading in September?

The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Saul, French Guiana

Average temperature in September - Saul, French Guiana
  • Average high temperature in September: 34.1°C

The warmest month (with the highest average high temperature) is October (34.9°C).
The month with the lowest average high temperature is February (29.3°C).

  • Average low temperature in September: 20.5°C

The month with the highest average low temperature is May (21.9°C).
The coldest months (with the lowest average low temperature) are August and September (20.5°C).

Average pressure in September
Saul, French Guiana

Average pressure in September - Saul, French Guiana
  • Average pressure in September: 1011.6mbar

The months with the highest atmospheric pressure are June and July (1013mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).

Average wind speed in September
Saul, French Guiana

Average wind speed in September - Saul, French Guiana
  • Average wind speed in September: 4.9km/h

The windiest months (with the highest average wind speed) are February, March and November (5.3km/h).
The calmest month (with the lowest average wind speed) is July (4.2km/h).

Average humidity in September
Saul, French Guiana

Average humidity in September - Saul, French Guiana
  • Average humidity in September: 74%

The month with the highest relative humidity is May (90%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Saul, French Guiana

Average rainfall in September - Saul, French Guiana
  • Average rainfall in September: 36mm

The wettest month (with the highest rainfall) is May (192mm).
The driest month (with the least rainfall) is October (21mm).

Average rainfall days in September
Saul, French Guiana

Average rainfall days in September - Saul, French Guiana
  • Average rainfall days in September: 14.3 days

The months with the highest number of rainy days are January and March (26.8 days).
The month with the least rainy days is October (10.4 days).

Average daylight in September /
Average sunshine in September
Saul, French Guiana

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

The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 11h and 54min).

  • Average sunshine in September: 8h and 5min

The months with the most sunshine are September and October (Average sunshine: 8h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).

Average sunshine days in September
Saul, French Guiana

Average sunshine days in September - Saul, French Guiana
  • Average sunshine days in September: 13.3 days

The month with the most sunshine days is October (17.3 days).
The month with the least sunshine days is February (1.8 days).

Average UV index in September
Saul, French Guiana

Average UV index in September - Saul, French Guiana
  • Average UV index in September: 7

The months with the highest UV index are August, September, October and November (UV index 7).
The months with the lowest UV index are January, March and December (UV index 5).

Average cloud cover in September
Saul, French Guiana

Average cloud cover in September - Saul, French Guiana
  • Average cloud cover in September: 45

The month with the most cloud cover is February (Cloud cover 81).
The month with the least cloud cover is October (Cloud cover 44).

Average visibility in September
Saul, French Guiana

Average visibility in September - Saul, French Guiana
  • Average visibility in September: 7km

The month with the highest visibility is October (8km).
The month with the lowest visibility is May (5km).

Saul, French Guiana

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