September weather forecast
Melbourne, FL

The first month of the autumn, September, is also a moderately hot month in Melbourne, Florida, with an average temperature fluctuating between 77.5°F (25.3°C) and 85.1°F (29.5°C).

Temperature

Melbourne's weather in September, with an average high-temperature of a moderately hot 85.1°F (29.5°C), subtly shifts from August's 87.3°F (30.7°C). Melbourne records a mild decrease in temperature during the nights of September, averaging 77.5°F (25.3°C).

Heat index

Throughout September, the heat index is evaluated at a very hot 96.8°F (36°C). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In September, the average relative humidity is 78%.

Rainfall

In Melbourne, in September, during 21.2 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. Throughout the year, there are 176.1 rainfall days, and 22.28" (566mm) of precipitation is accumulated.

Ocean temperature

In September, the average ocean temperature in Melbourne is 84°F (28.9°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 Melbourne, the average length of the day in September is 12h and 19min.
On the first day of the month, sunrise is at 7:01 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:15 am and sunset at 7:09 pm EDT.

Sunshine

The average sunshine in September in Melbourne is 9.1h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 7 in September translates into these instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Watch out! Sand and water enhance the UV exposure you receive.