September weather forecast and climate
Anna Maria, FL

Weather in September

The first month of the autumn, September, is also a hot month in Anna Maria, Florida, with average temperature varying between 77.9°F (25.5°C) and 86.2°F (30.1°C).

Temperature

In September, the average high-temperature is practically the same as in August - a still tropical 86.2°F (30.1°C). In September, in Anna Maria, the average low-temperature is 77.9°F (25.5°C).

Heat index

The average heat index in September is calculated to a sweltering 97.9°F (36.6°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
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 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, differences in body mass, height, and shape, clothing). 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in Anna Maria is 75%.

Rainfall

In Anna Maria, during 21.5 rainfall days, 3.43" (87mm) of precipitation is typically accumulated. Throughout the year, there are 166.4 rainfall days, and 26.38" (670mm) of precipitation is accumulated.

Ocean temperature

In Anna Maria, the average water temperature is 84.7°F (29.3°C).
Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Anna Maria, Florida, the average length of the day is 12.3h.

Sunshine

In September, the average sunshine is 9.1h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Anna Maria, Florida. 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: 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. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in September in Anna Maria?

In September, in Anna Maria, the average high-temperature is 86.2°F (30.1°C), and the average low-temperature is 77.9°F (25.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, in September is appraised at 97.9°F (36.6°C).

What is the average humidity in September in Anna Maria?

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

How much does it rain in Anna Maria in September?

In Anna Maria, in September, during 21.5 rainfall days, 3.43" (87mm) of precipitation is typically accumulated.

How warm is the water in September in Anna Maria?

In Anna Maria, Florida, in September, the average water temperature is 84.7°F (29.3°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Anna Maria have in September?

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

How long on average sun shines in September in Anna Maria?

In Anna Maria, Florida, the average sunshine in September is 9.1h.

When is the highest UV index in Anna Maria?

Months with the highest UV index in Anna Maria are May through September, with an average maximum UV index of 7.

What is the UV index reading in September in Anna Maria?

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

Average temperature in September
Anna Maria, FL

Average temperature in September - Anna Maria, FL
  • Average high temperature in September: 86.2°F

The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is January (66.9°F).

  • Average low temperature in September: 77.9°F

The month with the highest average low temperature is August (80.4°F).
The coldest month (with the lowest average low temperature) is January (56.8°F).

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Average pressure in September
Anna Maria, FL

Average pressure in September - Anna Maria, FL
  • Average pressure in September: 29.96"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is September (29.96").

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Average wind speed in September
Anna Maria, FL

Average wind speed in September - Anna Maria, FL
  • Average wind speed in September: 8.2mph

The windiest month (with the highest average wind speed) is November (10.7mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

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Average humidity in September
Anna Maria, FL

Average humidity in September - Anna Maria, FL
  • Average humidity in September: 75%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in September
Anna Maria, FL

Average rainfall in September - Anna Maria, FL
  • Average rainfall in September: 3.43"

The wettest month (with the highest rainfall) is July (4.88").
The driest month (with the least rainfall) is November (0.71").

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Average rainfall days in September
Anna Maria, FL

Average rainfall days in September - Anna Maria, FL
  • Average rainfall days in September: 21.5 days

Months with the highest number of rainy days are July and August (24.6 days).
The month with the least rainy days is January (7.3 days).

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Average sea temperature in September
Anna Maria, FL

Average sea temperature in September - Anna Maria, FL
  • Average sea temperature in September: 84.7°F

The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (64°F).

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Average daylight in September /
Average sunshine in September
Anna Maria, FL

Average daylight in September / Average sunshine in September - Anna Maria, 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: 10.4h).

  • Average sunshine in September: 9.1h

The month with the most sunshine is May (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 6.5h).

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Average sunshine days in September
Anna Maria, FL

Average sunshine days in September - Anna Maria, FL
  • Average sunshine days in September: 6 days

The month with the most sunshine days is January (22.6 days).
Months with the least sunshine days are July and August (4.8 days).

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Average UV index in September
Anna Maria, FL

Average UV index in September - Anna Maria, 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
Anna Maria, FL

Average cloud cover in September - Anna Maria, FL
  • Average cloud cover in September: 27

Months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 21).

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Average visibility in September
Anna Maria, FL

Average visibility in September - Anna Maria, 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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