September weather forecast
Ruskin, FL

Weather in September

September, the first month of the autumn, in Ruskin, is still a hot month, with temperature in the range of an average high of 88.3°F (31.3°C) and an average low of 74.8°F (23.8°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a still hot 88.3°F (31.3°C). In Ruskin, in September, the average low-temperature is 74.8°F (23.8°C).

Heat index

In September, the average heat index is computed to be a blistering 105.4°F (40.8°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, metabolic differences, pregnancy). 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. 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. 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

With an average relative humidity of 77%, September is the most humid month in Ruskin.

Rainfall

In Ruskin, during September, the rain falls for 20.1 days and regularly aggregates up to 1.5" (38mm) of precipitation. Throughout the year, in Ruskin, there are 159.5 rainfall days, and 15.16" (385mm) of precipitation is accumulated.

Ocean temperature

In Ruskin, the average seawater temperature is 84.4°F (29.1°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

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

Sunshine

The average sunshine in September is 9h.

UV index

Months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in September in Ruskin?

The average high-temperature, in September, in Ruskin, Florida, is 88.3°F (31.3°C), while the average low-temperature is 74.8°F (23.8°C). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in September is computed to be 105.4°F (40.8°C).

What is the most humid month in Ruskin?

With an average relative humidity of 77%, September is the most humid month in Ruskin.

What is the average humidity in September in Ruskin?

In Ruskin, Florida, the average relative humidity in September is 77%.

How many days does it rain in September in Ruskin?

In Ruskin, during September, the rain falls for 20.1 days and regularly aggregates up to 1.5" (38mm) of precipitation.

What is the ocean temperature in September in Ruskin?

In September, the average ocean temperature in Ruskin is 84.4°F (29.1°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 Ruskin have in September?

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

How many hours of sunshine does Ruskin have in September?

The average sunshine in September in Ruskin is 9h.

What is the month with the highest UV index in Ruskin?

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

What is the UV index intensity in September in Ruskin?

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

Average temperature in September
Ruskin, FL

Average temperature in September - Ruskin, FL
  • Average high temperature in September: 88.3°F

The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (68.7°F).

  • Average low temperature in September: 74.8°F

The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (52.7°F).

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Average pressure in September
Ruskin, FL

Average pressure in September - Ruskin, 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
Ruskin, FL

Average wind speed in September - Ruskin, FL
  • Average wind speed in September: 5.8mph

The windiest months (with the highest average wind speed) are January and March (7.5mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).

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Average humidity in September
Ruskin, FL

Average humidity in September - Ruskin, FL
  • Average humidity in September: 77%

The month with the highest relative humidity is September (77%).
Months with the lowest relative humidity are March, April and May (71%).

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Average rainfall in September
Ruskin, FL

Average rainfall in September - Ruskin, FL
  • Average rainfall in September: 1.5"

The wettest months (with the highest rainfall) are July and August (2.68").
The driest months (with the least rainfall) are January, February and March (0.47").

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Average rainfall days in September
Ruskin, FL

Average rainfall days in September - Ruskin, FL
  • Average rainfall days in September: 20.1 days

The month with the highest number of rainy days is August (24.1 days).
The month with the least rainy days is February (6.7 days).

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Average sea temperature in September
Ruskin, FL

Average sea temperature in September - Ruskin, FL
  • Average sea temperature in September: 84.4°F

The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is January (64.8°F).

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

Average daylight in September / Average sunshine in September - Ruskin, 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: 9h

The month with the most sunshine is May (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 6.4h).

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Average sunshine days in September
Ruskin, FL

Average sunshine days in September - Ruskin, FL
  • Average sunshine days in September: 6.9 days

The month with the most sunshine days is January (22.4 days).
The month with the least sunshine days is August (4.1 days).

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Average UV index in September
Ruskin, FL

Average UV index in September - Ruskin, 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
Ruskin, FL

Average cloud cover in September - Ruskin, FL
  • Average cloud cover in September: 29

The month with the most cloud cover is December (Cloud cover 31).
The month with the least cloud cover is May (Cloud cover 23).

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Average visibility in September
Ruskin, FL

Average visibility in September - Ruskin, 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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