September weather forecast
Oviedo, FL

September, the first month of the autumn in Oviedo, is still a hot month, with an average temperature ranging between max 88.3°F (31.3°C) and min 74.3°F (23.5°C).

Temperature

As August transitions into September, the average high-temperature rests at a still tropical 88.3°F (31.3°C), maintaining a close resemblance to the previous month. Oviedo records an average low-temperature of 74.3°F (23.5°C) throughout the month of September.

Heat index

During September, the heat index is calculated to be an extremely hot 105.8°F (41°C). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

July through September, with an average relative humidity of 77%, are the most humid months.

Rainfall

In Oviedo, during September, the rain falls for 14.5 days and regularly aggregates up to 1.14" (29mm) of precipitation. In Oviedo, Florida, during the entire year, the rain falls for 130.9 days and collects up to 12.17" (309mm) of precipitation.

Daylight

In Oviedo, the average length of the day in September is 12h and 19min.
On the first day of the month, sunrise is at 7:03 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:17 am and sunset at 7:11 pm EDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Oviedo. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 7 in September translates into this advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.