September weather forecast
Oldsmar, FL

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

Temperature

September welcomes an average high-temperature of a still tropical 86.5°F (30.3°C), not much different from the preceding month. Oldsmar registers a small shift from peak daytime temperatures, with a consistent average low-temperature of 77.7°F (25.4°C) during September.

Heat index

In September, the heat index is estimated at a fiery hot 98.6°F (37°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is the outcome of merging air's temperature and its humidity metrics. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. 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. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In September, the average relative humidity is 74%.

Rainfall

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

Ocean temperature

In September, the average ocean temperature is 84.6°F (29.2°C).
Note: For swimming, diving, and various water activities, the temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are seen as highly enjoyable and comfortable for extended durations without any discomfort.

Daylight

The average length of the day in September is 12h and 19min.
On the first day of September in Oldsmar, 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 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. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A daily high UV index of 7 in September leads to these guidelines:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Note! Reflective surfaces like sand and water heighten the UV radiation levels.