September weather forecast
Marathon Shores, FL

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Marathon Shores, Florida, with temperature in the range of an average high of 84.6°F (29.2°C) and an average low of 82°F (27.8°C).

Temperature

Marathon Shores, Florida, registers an average high-temperature of a still moderately hot 84.6°F (29.2°C) with the arrival of September, showing minor deviation from the preceding month. Marathon Shores's nighttime temperatures in September display a slight drop from daytime highs, averaging to a still moderately hot 82°F (27.8°C).

Heat index

Throughout September, the heat index is appraised at a hot 93.2°F (34°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

In Marathon Shores, the average relative humidity in September is 74%.

Rainfall

The month with the most rainfall is September, when the rain falls for 23 days and typically aggregates up to 4.21" (107mm) of precipitation.

Ocean temperature

In Marathon Shores, in September, the average water temperature is 85.6°F (29.8°C).
Note: In water temperatures ranging between 77°F (25°C) and 84.2°F (29°C), activities such as swimming and diving become highly pleasurable for long durations.

Daylight

In Marathon Shores, Florida, the average length of the day in September is 12h and 17min.
On the first day of September in Marathon Shores, sunrise is at 7:05 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:11 pm EDT.

Sunshine

In September, the average sunshine in Marathon Shores is 9h.

UV index

The months with the highest UV index in Marathon Shores are April through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average UV index of 7 in September transforms into this advice:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be mindful! Sand and water reflections can up the Sun's UV exposure.
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Frequently asked questions

How hot is it in Marathon Shores in September?

In Marathon Shores, in September, the average high-temperature is 84.6°F (29.2°C), and the average low-temperature is 82°F (27.8°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is appraised at 93.2°F (34°C).

What is the average humidity in September in Marathon Shores?

The average relative humidity in September is 74%.

What is the wettest month in Marathon Shores?

The month with the most rainfall in Marathon Shores, Florida, is September, when the rain falls for 23 days and typically aggregates up to 4.21" (107mm) of precipitation.

How many days does it rain in September in Marathon Shores?

In September, in Marathon Shores, Florida, the rain falls for 23 days. Throughout September, 4.21" (107mm) of precipitation is accumulated.

How warm is the water in September in Marathon Shores?

In Marathon Shores, in September, the average water temperature is 85.6°F (29.8°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Marathon Shores have in September?

In September, the average day length is 12h and 17min.

What time are sunrise and sunset in September in Marathon Shores?

In September, on the first day of the month, sunrise is at 7:05 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:11 pm EDT.

How long on average sun shines in September in Marathon Shores?

The average sunshine duration in September in Marathon Shores, Florida, is 9h.

When is the highest UV index in Marathon Shores?

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

What is the UV index intensity in September in Marathon Shores?

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

Average temperature in September
Marathon Shores, FL

Average temperature in September - Marathon Shores, FL
  • Average high temperature in September: 84.6°F

The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is January (72.9°F).

  • Average low temperature in September: 82°F

The month with the highest average low temperature is August (82.9°F).
The coldest month (with the lowest average low temperature) is January (67.5°F).

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Average pressure in September
Marathon Shores, FL

Average pressure in September - Marathon Shores, FL
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are September and October (29.94"Hg).

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Average wind speed in September
Marathon Shores, FL

Average wind speed in September - Marathon Shores, FL
  • Average wind speed in September: 9.8mph

The windiest month (with the highest average wind speed) is January (13.4mph).
The calmest month (with the lowest average wind speed) is July (9mph).

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Average humidity in September
Marathon Shores, FL

Average humidity in September - Marathon Shores, FL
  • Average humidity in September: 74%

The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is March (73%).

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Average rainfall in September
Marathon Shores, FL

Average rainfall in September - Marathon Shores, FL
  • Average rainfall in September: 4.21"

The wettest month (with the highest rainfall) is September (4.21").
The driest month (with the least rainfall) is March (0.43").

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Average rainfall days in September
Marathon Shores, FL

Average rainfall days in September - Marathon Shores, FL
  • Average rainfall days in September: 23 days

The month with the highest number of rainy days is September (23 days).
The month with the least rainy days is February (10.3 days).

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Average sea temperature in September
Marathon Shores, FL

Average sea temperature in September - Marathon Shores, FL
  • Average sea temperature in September: 85.6°F

The best month for swimming (with the highest average sea temperature) is August (86.8°F).
The coldest month (with the lowest average sea temperature) is February (72.1°F).

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Average daylight in September /
Average sunshine in September
Marathon Shores, FL

Average daylight in September / Average sunshine in September - Marathon Shores, FL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 36min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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Average sunshine days in September
Marathon Shores, FL

Average sunshine days in September - Marathon Shores, FL
  • Average sunshine days in September: 4.6 days

The month with the most sunshine days is March (18 days).
The month with the least sunshine days is September (4.6 days).

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Average UV index in September
Marathon Shores, FL

Average UV index in September - Marathon Shores, FL
  • Average UV index in September: 7

The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The month with the lowest UV index is January (UV index 5).

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Average cloud cover in September
Marathon Shores, FL

Average cloud cover in September - Marathon Shores, FL
  • Average cloud cover in September: 28

The months with the most cloud cover are January and October (Cloud cover 32).
The month with the least cloud cover is April (Cloud cover 23).

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Average visibility in September
Marathon Shores, FL

Average visibility in September - Marathon Shores, 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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Marathon Shores, Florida, USA

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