September weather forecast
Tallevast, FL

Weather in September

The first month of the autumn, September, is still a tropical month in Tallevast, Florida, with an average temperature fluctuating between 77.4°F (25.2°C) and 86.9°F (30.5°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a still hot 86.9°F (30.5°C). In September, the average low-temperature is 77.4°F (25.2°C).

Heat index

The average heat index in September is evaluated at a very hot 99.9°F (37.7°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. With 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 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like clothing, differences in body mass, height, and shape, 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 especially crucial for babies and toddlers. 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. 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

In Tallevast, the average relative humidity in September is 75%.

Rainfall

In Tallevast, during 23.5 rainfall days, 4.61" (117mm) of precipitation is typically accumulated. In Tallevast, during the entire year, the rain falls for 183.1 days and collects up to 34.92" (887mm) of precipitation.

Daylight

In Tallevast, the average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 7:09 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:17 pm EDT.

Sunshine

The average sunshine in September in Tallevast, Florida, is 9h.

UV index

The months with the highest UV index in Tallevast are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health 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. Protection against sun damage is needed. 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Tallevast?

In Tallevast, Florida, in September, the average high-temperature is 86.9°F (30.5°C), and the average low-temperature is 77.4°F (25.2°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in September is evaluated at 99.9°F (37.7°C).

What is the average humidity in September in Tallevast?

The average relative humidity in September in Tallevast, Florida, is 75%.

How many days does it rain in September in Tallevast?

In Tallevast, Florida, in September, it is raining for 23.5 days, with typically 4.61" (117mm) of accumulated precipitation.

How many hours of daylight does Tallevast have in September?

The average day length in September in Tallevast, Florida, is 12h and 19min.

When are sunrise and sunset in September in Tallevast?

On the first day of September in Tallevast, sunrise is at 7:09 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:17 pm EDT.

How many hours of sunshine does Tallevast have in September?

The average sunshine duration in September is 9h.

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

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

What is the UV index reading in September in Tallevast?

In Tallevast, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.

Average temperature in September
Tallevast, FL

Average temperature in September - Tallevast, FL
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is August (88.5°F).
The month with the lowest average high temperature is January (68.5°F).

  • Average low temperature in September: 77.4°F

The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (56.1°F).

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Average pressure in September
Tallevast, FL

Average pressure in September - Tallevast, FL
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).

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Average wind speed in September
Tallevast, FL

Average wind speed in September - Tallevast, FL
  • Average wind speed in September: 7.2mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

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Average humidity in September
Tallevast, FL

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

The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are March, April and May (72%).

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Average rainfall in September
Tallevast, FL

Average rainfall in September - Tallevast, FL
  • Average rainfall in September: 4.61"

The wettest month (with the highest rainfall) is August (6.42").
The driest months (with the least rainfall) are February and November (1.06").

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Average rainfall days in September
Tallevast, FL

Average rainfall days in September - Tallevast, FL
  • Average rainfall days in September: 23.5 days

The month with the highest number of rainy days is August (26.8 days).
The months with the least rainy days are January, February and November (8.3 days).

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

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

The month with the longest days is June (Average daylight: 13h and 50min).
The month with the shortest days is December (Average daylight: 10h and 27min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is May (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days in September
Tallevast, FL

Average sunshine days in September - Tallevast, FL
  • Average sunshine days in September: 4.5 days

The month with the most sunshine days is January (21.1 days).
The month with the least sunshine days is August (2.5 days).

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Average UV index in September
Tallevast, FL

Average UV index in September - Tallevast, 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
Tallevast, FL

Average cloud cover in September - Tallevast, FL
  • Average cloud cover in September: 28

The months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 22).

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Average visibility in September
Tallevast, FL

Average visibility in September - Tallevast, 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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