September weather forecast
Orlando, FL

Colorful water reflection of Orlando city in Florida, USA, with its majestic skyscrapers
Colorful water reflection of Orlando city in Florida, USA, with its majestic skyscrapers

Weather in September

September, the first month of the autumn in Orlando, is also a hot month, with an average temperature ranging between max 88.5°F (31.4°C) and min 74.5°F (23.6°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a still hot 88.5°F (31.4°C). In September, the average low-temperature is 74.5°F (23.6°C).

Heat index

The average heat index in September is computed to be an extremely hot 106°F (41.1°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'feels like', or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, wind, differences in body mass, height, and shape). 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

August and September, with an average relative humidity of 77%, are the most humid months.

Rainfall

In Orlando, in September, during 21.4 rainfall days, 3.94" (100mm) of precipitation is typically accumulated. In Orlando, during the entire year, the rain falls for 187.6 days and collects up to 33.86" (860mm) of precipitation.

Daylight

The average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 7:03 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:12 pm EDT.

Sunshine

In Orlando, the average sunshine in September is 8.7h.

UV index

The months with the highest UV index in Orlando, Florida, are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Orlando?

In September, the average high-temperature is 88.5°F (31.4°C), and the average low-temperature is 74.5°F (23.6°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is computed to be 106°F (41.1°C).

What is the most humid month in Orlando?

August and September, with an average relative humidity of 77%, are most humid months in Orlando, Florida.

What is the average humidity in September in Orlando?

In September, the average relative humidity is 77%.

How many days does it rain in September in Orlando?

In Orlando, Florida, in September, it is raining for 21.4 days, with typically 3.94" (100mm) of accumulated precipitation.

How many hours of daylight does Orlando have in September?

The average day length in September in Orlando is 12h and 19min.

What time are sunrise and sunset in September in Orlando?

On the first day of September, sunrise is at 7:03 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:12 pm EDT.

How long on average sun shines in September in Orlando?

In September, the average sunshine duration in Orlando, Florida, is 8.7h.

What is the month with the highest UV index in Orlando?

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

How high is the UV index in September in Orlando?

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

Average temperature in September
Orlando, FL

Average temperature in September - Orlando, FL
  • Average high temperature in September: 88.5°F

The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is January (68.5°F).

  • Average low temperature in September: 74.5°F

The month with the highest average low temperature is August (76.8°F).
The coldest month (with the lowest average low temperature) is January (51.6°F).

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Average pressure in September
Orlando, FL

Average pressure in September - Orlando, FL
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).

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Average wind speed in September
Orlando, FL

Average wind speed in September - Orlando, FL
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).

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Average humidity in September
Orlando, FL

Average humidity in September - Orlando, FL
  • Average humidity in September: 77%

The months with the highest relative humidity are August and September (77%).
The month with the lowest relative humidity is March (70%).

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Average rainfall in September
Orlando, FL

Average rainfall in September - Orlando, FL
  • Average rainfall in September: 3.94"

The wettest month (with the highest rainfall) is August (5.31").
The driest months (with the least rainfall) are March and December (1.34").

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Average rainfall days in September
Orlando, FL

Average rainfall days in September - Orlando, FL
  • Average rainfall days in September: 21.4 days

The month with the highest number of rainy days is July (24.7 days).
The month with the least rainy days is November (10 days).

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

Average daylight in September / Average sunshine in September - Orlando, FL
  • Average daylight in September: 12h and 19min

The month with the longest days is June (Average daylight: 13h and 56min).
The month with the shortest days is December (Average daylight: 10h and 22min).

  • Average sunshine in September: 8h and 42min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).

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Average sunshine days in September
Orlando, FL

Average sunshine days in September - Orlando, FL
  • Average sunshine days in September: 6 days

The month with the most sunshine days is March (17.8 days).
The month with the least sunshine days is August (3.9 days).

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Average UV index in September
Orlando, FL

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

The 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 4).

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Average cloud cover in September
Orlando, FL

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

The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is May (Cloud cover 28).

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Average visibility in September
Orlando, FL

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

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

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