September weather forecast and climate
Atlantis, FL

Weather in September

September, the first month of the autumn, in Atlantis, is still a warm month, with average temperature fluctuating between 80.1°F (26.7°C) and 85.1°F (29.5°C).

Temperature

In Atlantis, the average high-temperature is practically the same as in August - a moderately hot 85.1°F (29.5°C). In September, the average low-temperature is 80.1°F (26.7°C).

Heat index

The average heat index is evaluated at a tropical 95°F (35°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like differences in body mass, height, and shape, wind, pregnancy, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in Atlantis is 75%.

Rainfall

In Atlantis, Florida, in September, it is raining for 26.8 days, with typically 7.48" (190mm) of accumulated precipitation. In Atlantis, Florida, during the entire year, the rain falls for 238.3 days and collects up to 54.53" (1385mm) of precipitation.

Daylight

The average length of the day in Atlantis is 12.3h.

Sunshine

In September, the average sunshine is 8.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 7 in September transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Atlantis?

In Atlantis, in September, the average high-temperature is 85.1°F (29.5°C), and the average low-temperature is 80.1°F (26.7°C). The average heat index (a.k.a. 'feels like', 'real feel'), that combines relative humidity and air temperature, in September is calculated to 95°F (35°C).

What is the average humidity in September in Atlantis?

The average relative humidity in September in Atlantis is 75%.

How much does it rain in Atlantis in September?

In September, in Atlantis, the rain falls for 26.8 days. Throughout September, 7.48" (190mm) of precipitation is accumulated.

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

The average length of the day in September in Atlantis is 12.3h.

How many hours of sunshine does Atlantis have in September?

In Atlantis, Florida, the average sunshine in September is 8.9h.

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

May through September, with an average maximum UV index of 7, are months with the highest UV index in Atlantis, Florida.

How high is the UV index in September in Atlantis?

In September, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to the UV radiation.

Average temperature in September
Atlantis, FL

Average temperature in September - Atlantis, FL
  • Average high temperature in September: 85.1°F

The warmest month (with the highest average high temperature) is August (86.7°F).
The month with the lowest average high temperature is January (72.5°F).

  • Average low temperature in September: 80.1°F

The month with the highest average low temperature is August (81.5°F).
The coldest month (with the lowest average low temperature) is January (64°F).

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Average pressure in September
Atlantis, FL

Average pressure in September - Atlantis, FL
  • Average pressure in September: 29.96"

The month with the highest atmospheric pressure is January (30.11").
Months with the lowest atmospheric pressure are September and October (29.96").

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Average wind speed in September
Atlantis, FL

Average wind speed in September - Atlantis, FL
  • Average wind speed in September: 8.5mph

The windiest month (with the highest average wind speed) is March (11.5mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).

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Average humidity in September
Atlantis, FL

Average humidity in September - Atlantis, FL
  • Average humidity in September: 75%

Months with the highest relative humidity are June and December (76%).
The month with the lowest relative humidity is March (70%).

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Average rainfall in September
Atlantis, FL

Average rainfall in September - Atlantis, FL
  • Average rainfall in September: 7.48"

The wettest month (with the highest rainfall) is August (9.06").
The driest month (with the least rainfall) is January (1.3").

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Average rainfall days in September
Atlantis, FL

Average rainfall days in September - Atlantis, FL
  • Average rainfall days in September: 26.8 days

The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is February (13.3 days).

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Average daylight in September /
Average sunshine in September
Atlantis, FL

Average daylight in September / Average sunshine in September - Atlantis, FL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.8h).
The month with the shortest days is December (Average daylight: 10.5h).

  • Average sunshine in September: 8.9h

Months with the most sunshine are July and August (Average sunshine: 10.7h).
Months with the least sunshine are January and December (Average sunshine: 6).

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Average sunshine days in September
Atlantis, FL

Average sunshine days in September - Atlantis, FL
  • Average sunshine days in September: 2.8 days

The month with the most sunshine days is March (12.7 days).
The month with the least sunshine days is July (2.3 days).

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Average UV index in September
Atlantis, FL

Average UV index in September - Atlantis, FL
  • Average UV index in September: 7

Months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 5).

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Average cloud cover in September
Atlantis, FL

Average cloud cover in September - Atlantis, FL
  • Average cloud cover in September: 32

Months with the most cloud cover are January, October, November and December (Cloud cover 36).
Months with the least cloud cover are April and July (Cloud cover 29).

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Average visibility in September
Atlantis, FL

Average visibility in September - Atlantis, FL
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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