September weather forecast and climate
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
September, the first month of the autumn, in Orlando, is still a hot month, with average temperature varying between 88.5°F (31.4°C) and 74.5°F (23.6°C).

Temperature

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

Heat index

The average heat index in September is evaluated at a scorching 106°F (41.1°C). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'felt air temperature', or 'feels like', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like activity, wind, pregnancy, and differences in body mass, height, and shape affect individual temperature impact. 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. 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 cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

Months with the highest humidity are August and September, with an average relative humidity of 77%.

Rainfall

In Orlando, in September, during 21.4 rainfall days, 3.94" (100mm) of precipitation is typically accumulated. Throughout the year, there are 187.6 rainfall days, and 33.86" (860mm) of precipitation is accumulated.

Daylight

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

Sunshine

The average sunshine in September 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 of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. 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.

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). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), that combines relative humidity and air temperature, is estimated at 106°F (41.1°C).

What are the most humid months in Orlando?

Months with the highest humidity in Orlando, Florida, are August and September, with an average relative humidity of 77%.

What is the average humidity in September in Orlando?

The average relative humidity in September in Orlando is 77%.

How many days does it rain in September in Orlando?

In Orlando, in September, during 21.4 rainfall days, 3.94" (100mm) of precipitation is typically accumulated.

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

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

How many hours of sunshine does Orlando have in September?

The average sunshine in September in Orlando is 8.7h.

What is the month 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.

What is the UV index intensity in September in Orlando?

The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV radiation.
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).

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

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

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).

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%).

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").

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).

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).

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).

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).

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).

Average visibility in September - Orlando, 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).