Tarpon Springs
Florida, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Tarpon Springs, FL

Numerous boats docked on the shores of Tarpon Springs in Florida, and the dramatic sky above is colorful from the rays of the warm, setting sun
Numerous boats docked on the shores of Tarpon Springs in Florida, and the dramatic sky above is colorful from the rays of the warm, setting sun
The first month of the autumn, September, is still a tropical month in Tarpon Springs, Florida, with temperature in the range of an average low of 77.5°F (25.3°C) and an average high of 86.7°F (30.4°C).

Temperature

In September, the average high-temperature is practically the same as in August - a still tropical 86.7°F (30.4°C). In September, the average low-temperature is 77.5°F (25.3°C).

Heat index

In September, the average heat index is appraised at a sweltering 99.3°F (37.4°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. With the 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 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', 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). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. 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

The average relative humidity in Tarpon Springs is 75%.

Rainfall

In September, the rain falls for 15.7 days. Throughout September, 0.71" (18mm) of precipitation is accumulated. Throughout the year, in Tarpon Springs, there are 120.5 rainfall days, and 9.45" (240mm) of precipitation is accumulated.

Ocean temperature

In September, the average ocean temperature is 84.6°F (29.2°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 Tarpon Springs is 12.3h.

Sunshine

In September, the average sunshine is 9.2h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Tarpon Springs. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation 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. 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.

What is the temperature in September in Tarpon Springs?

The average high-temperature, in September, in Tarpon Springs, Florida, is 86.7°F (30.4°C), while the average low-temperature is 77.5°F (25.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, in September is estimated at 99.3°F (37.4°C).

What is the average humidity in September in Tarpon Springs?

In September, the average relative humidity is 75%.

How many days does it rain in September in Tarpon Springs?

In Tarpon Springs, during September, the rain falls for 15.7 days and regularly aggregates up to 0.71" (18mm) of precipitation.

What is the water temperature in September in Tarpon Springs?

In Tarpon Springs, Florida, in September, the average water temperature is 84.6°F (29.2°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.

What is the average length of the day in September in Tarpon Springs?

The average length of the day in September in Tarpon Springs, Florida, is 12.3h.

How long on average sun shines in September in Tarpon Springs?

In Tarpon Springs, the average sunshine in September is 9.2h.

What are the months with the highest UV index in Tarpon Springs?

May through September, with an average maximum UV index of 7, are months with the highest UV index in Tarpon Springs, Florida.

What is the UV index intensity in September in Tarpon Springs?

In September, the average daily maximum UV index in Tarpon Springs is 7. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Tarpon Springs, FL
  • Average high temperature in September: 86.7°F

The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is January (66°F).

  • Average low temperature in September: 77.5°F

The month with the highest average low temperature is August (80.2°F).
The coldest month (with the lowest average low temperature) is January (54.5°F).

Average humidity in September - Tarpon Springs, FL
  • Average humidity in September: 75%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is May (72%).

Average rainfall in September - Tarpon Springs, FL
  • Average rainfall in September: 0.71"

The wettest month (with the highest rainfall) is July (1.77").
The driest month (with the lowest rainfall) is March (0.2").

Average rainfall days in September - Tarpon Springs, FL
  • Average rainfall days in September: 15.7 days

The month with the highest number of rainy days is August (17.9 days).
The month with the lowest number of rainy days is November (5.5 days).

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

The best month for swimming (with the highest average sea temperature) is August (86.6°F).
The coldest month (with the lowest average sea temperature) is January (61.1°F).

Average daylight in September / Average sunshine in September - Tarpon Springs, FL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.9h).
The month with shortest days is December (Average daylight: 10.4h).

  • Average sunshine in September: 9.2h

The month with most sunshine is May (Average sunshine: 11.3h).
The month with least sunshine is December (Average sunshine: 6.5h).

Average UV index in September - Tarpon Springs, 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).