September weather forecast
Oldsmar, FL

The first month of the autumn, September, is still a hot month in Oldsmar, Florida, with an average temperature fluctuating between 86.5°F (30.3°C) and 77.7°F (25.4°C).

Temperature

The commencement of September records an average high-temperature of a still tropical 86.5°F (30.3°C), barely varying from August's 88°F (31.1°C). Oldsmar notes a consistent average low-temperature of 77.7°F (25.4°C) during September nights.

Heat index

In September, the average heat index is evaluated at a very hot 98.6°F (37°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
Understand that the heat index values take into account shaded locations and mild winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In September, the average relative humidity is 74%.

Rainfall

In Oldsmar, Florida, during September, the rain falls for 21 days and regularly aggregates up to 3.7" (94mm) of precipitation. Throughout the year, there are 168.5 rainfall days, and 27.4" (696mm) of precipitation is accumulated.

Ocean temperature

In Oldsmar, the average seawater temperature in September is 84.6°F (29.2°C).
Note: Surface water temperatures falling between 77°F (25°C) and 84.2°F (29°C) are regarded as prime and extremely agreeable for enduring periods during any water activity.

Daylight

In Oldsmar, the average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 7:09 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 Oldsmar, the average sunshine in September is 9.2h.

UV index

The 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 health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat. Beware! Reflections from sand and water can intensify the Sun's UV radiation.