September weather forecast
Anna Maria, FL

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Weather in September

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

Temperature

Anna Maria's average high-temperature in September sits at a still tropical 86.2°F (30.1°C), showing little difference from the previous month. Anna Maria's nocturnal average in September closely mirrors its daytime temperatures, settling at a moderately hot 77.9°F (25.5°C).

Heat index

The heat index for September is computed to be a very hot 98.6°F (37°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. 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' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

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

Rainfall

In September, in Anna Maria, the rain falls for 21.5 days. Throughout September, 3.43" (87mm) of precipitation is accumulated. In Anna Maria, during the entire year, the rain falls for 166.4 days and collects up to 26.38" (670mm) of precipitation.

Ocean temperature

In September, the average ocean temperature in Anna Maria is 84.7°F (29.3°C).
Note: Ideal surface water temperatures for any water activity fall between 77°F (25°C) and 84.2°F (29°C), offering maximum enjoyment for lengthened periods.

Daylight

In Anna Maria, the average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 7:10 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:17 pm EDT.

Sunshine

In Anna Maria, Florida, the average sunshine in September 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. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.
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Frequently asked questions

How hot is September in Anna Maria?

The average high-temperature, in September, in Anna Maria, is 86.2°F (30.1°C), while the average low-temperature is 77.9°F (25.5°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is computed to be 98.6°F (37°C).

What is the average humidity in September in Anna Maria?

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

How many days does it rain in September in Anna Maria?

In Anna Maria, Florida, in September, it is raining for 21.5 days, with typically 3.43" (87mm) of accumulated precipitation.

How warm is the water in September in Anna Maria?

In Anna Maria, Florida, the average seawater temperature in September is 84.7°F (29.3°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in September in Anna Maria?

In September, the average day length is 12h and 19min.

What time are sunrise and sunset in September in Anna Maria?

In September, on the first day of the month, sunrise is at 7:10 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:17 pm EDT.

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

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

When is the highest UV index in Anna Maria?

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 Anna Maria?

In Anna Maria, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to 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"Hg

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

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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

The 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: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in September: 9h and 1min

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
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).
The 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

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
Anna Maria, FL

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

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 21).

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Average visibility in September
Anna Maria, FL

Average visibility in September - Anna Maria, 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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Anna Maria, Florida, USA

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