Tampa
Florida, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Tampa, FL

The Hillsborough River flowing under the bridge in Tampa, Florida, with a beautiful skyline above
The Hillsborough River flowing under the bridge in Tampa, Florida, with a beautiful skyline above
The first month of the autumn, September, is also a hot month in Tampa, Florida, with average temperature ranging between max 88.7°F (31.5°C) and min 76.1°F (24.5°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a still hot 88.7°F (31.5°C). In September, the average low-temperature is 76.1°F (24.5°C).

Heat index

In September, the average heat index is appraised at a scorching 104.5°F (40.3°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. 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', 'real feel', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, pregnancy, metabolic differences), and activity. 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Tampa, the average relative humidity is 74%.

Rainfall

In September, in Tampa, the rain falls for 21.2 days. Throughout September, 3.9" (99mm) of precipitation is accumulated. In Tampa, during the entire year, the rain falls for 178.2 days and collects up to 32.87" (835mm) of precipitation.

Ocean temperature

In September, the average ocean 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 Tampa is 12.3h.

Sunshine

In Tampa, the average sunshine is 8.9h.

UV index

Months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. 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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Tampa?

In Tampa, in September, the average high-temperature is 88.7°F (31.5°C), and the average low-temperature is 76.1°F (24.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that combines both air temperature and relative humidity, in September is appraised at 104.5°F (40.3°C).

What is the average humidity in September in Tampa?

In September, the average relative humidity is 74%.

How many days does it rain in September in Tampa?

In September, in Tampa, the rain falls for 21.2 days. Throughout September, 3.9" (99mm) of precipitation is accumulated.

How warm is the water in September in Tampa?

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

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

How long on average sun shines in September in Tampa?

The average sunshine in September is 8.9h.

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

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 Tampa?

In Tampa, Florida, 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 the exposure to the Sun's UV radiation.
Average temperature in September - Tampa, FL
  • Average high temperature in September: 88.7°F

The warmest month (with the highest average high temperature) is August (90.3°F).
The month with the lowest average high temperature is January (67.8°F).

  • Average low temperature in September: 76.1°F

The month with the highest average low temperature is August (79°F).
The coldest month (with the lowest average low temperature) is January (53.4°F).

Average humidity in September - Tampa, FL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is May (69%).

Average rainfall in September - Tampa, FL
  • Average rainfall in September: 3.9"

The wettest month (with the highest rainfall) is July (5.67").
The driest month (with the lowest rainfall) is November (1.26").

Average rainfall days in September - Tampa, FL
  • Average rainfall days in September: 21.2 days

The month with the highest number of rainy days is August (25.3 days).
The month with the lowest number of rainy days is November (8.2 days).

Average sea temperature in September - Tampa, 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).

Average daylight in September / Average sunshine in September - Tampa, 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: 8.9h

The month with most sunshine is May (Average sunshine: 10.9h).
The month with least sunshine is December (Average sunshine: 6.3h).

Average UV index in September - Tampa, 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).