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 average temperature varying between 88.5°F (31.4°C) and 74.5°F (23.6°C).

Temperature

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

Heat index

The average heat index in September is computed to be a blistering 106°F (41.1°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'real feel', 'apparent temperature', 'felt air temperature', or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, clothing, wind), and activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

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

Rainfall

In Orlando, it is raining for 21.4 days, with typically 3.94" (100mm) of accumulated precipitation. Throughout the year, there are 187.6 rainfall days, and 33.86" (860mm) of precipitation is accumulated.

Daylight

In September, the average length of the day is 12.3h.

Sunshine

In Orlando, the average sunshine is 8.7h.

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 hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 7 in September transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. 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?

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

What are the most humid months 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?

The average relative humidity in September is 77%.

How many days does it rain in September in Orlando?

In Orlando, Florida, during September, the rain falls for 21.4 days and regularly aggregates up to 3.94" (100mm) of precipitation.

How many hours of daylight does Orlando have in September?

In September, the average length of the day is 12.3h.

How many hours of sunshine does Orlando have in September?

The average sunshine in September is 8.7h.

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

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

What is the UV index reading in September in Orlando?

In September, the average daily maximum UV index in Orlando, Florida, is 7. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to the UV radiation.

Average temperature in September
Orlando, FL

Average temperature in September - Orlando, FL
  • Average high temperature in September: 31.4°C

The warmest month (with the highest average high temperature) is August (32.8°C).
The month with the lowest average high temperature is January (20.3°C).

  • Average low temperature in September: 23.6°C

The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (10.9°C).

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Average pressure in September
Orlando, FL

Average pressure in September - Orlando, FL
  • Average pressure in September: 1014.8mbar

The month with the highest atmospheric pressure is January (1020.4mbar).
The month with the lowest atmospheric pressure is September (1014.8mbar).

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Average wind speed in September
Orlando, FL

Average wind speed in September - Orlando, FL
  • Average wind speed in September: 8.4km/h

The windiest month (with the highest average wind speed) is April (10.6km/h).
The calmest month (with the lowest average wind speed) is July (7.6km/h).

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Average humidity in September
Orlando, FL

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

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: 100mm

The wettest month (with the highest rainfall) is August (135mm).
The driest months (with the least rainfall) are March and December (34mm).

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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: 12.3h

The month with the longest days is June (Average daylight: 13.9h).
The month with the shortest days is December (Average daylight: 10.3h).

  • Average sunshine in September: 8.7h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is December (Average sunshine: 6.1h).

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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

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: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

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