September weather forecast
Orlando, FL

The weather in September begins to hint towards the end of summer while the city remains drenched in high warmth, with temperatures ranging between 74.5°F to 88.5°F. Humidity levels remain high, yet slightly drier than the preceding summer months. The duration of daylight shrinks further to 12.3 hours, indicating the impending fall. An extended ten-day reduction in sunshine compared to August intimates the transition towards the cooler half of the year. The UV index tends to descend back to 7, prompting lesser severity of sun protection.

Temperature

Orlando's shift into September is marked by a subtle change to a still hot 88.5°F from August's 91°F in temperature. An average minimum temperature of 74.5°F marks the month of September in Orlando.

Heat index

The heat index in September is calculated to be a scorching 105.8°F. More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. 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.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

August and September, with an average relative humidity of 77%, are the most humid months in Orlando.

Rainfall

In September, the rain falls for 21.4 days. Throughout September, 3.94" of precipitation is accumulated. In Orlando, during the entire year, the rain falls for 187.6 days and collects up to 33.86" of precipitation.

Daylight

The average length of the day in September in Orlando, Florida, is 12h and 19min.
On the first day of the month, sunrise is at 7:03 am and sunset at 7:47 pm. On the last day of September, in Orlando, sunrise is at 7:17 am and sunset at 7:13 pm EDT.

Sunshine

The average sunshine in September is 8.7h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Orlando, Florida. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 7 during September leads to these instructions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.