September weather forecast
Highland Beach, FL

September, the first month of the autumn in Highland Beach, is also a moderately hot month, with an average temperature varying between 85.3°F (29.6°C) and 80.2°F (26.8°C).

Temperature

Upon the beginning of September, Highland Beach's high-temperatures register at a warm 85.3°F (29.6°C), closely mirroring the preceding month. Highland Beach encounters an average temperature dip to 80.2°F (26.8°C) throughout September, subtly lower than its daytime maximum.

Heat index

In September, the average heat index is computed to be a very hot 95°F (35°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

The average relative humidity in September in Highland Beach is 74%.

Rainfall

In Highland Beach, in September, it is raining for 27.8 days, with typically 10.59" (269mm) of accumulated precipitation. In Highland Beach, during the entire year, the rain falls for 244.6 days and collects up to 68.54" (1741mm) of precipitation.

Daylight

The average length of the day in September in Highland Beach is 12h and 18min.
On the first day of the month, sunrise is at 7:00 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:12 am and sunset at 7:07 pm EDT.

Sunshine

The average sunshine in September is 9h.

UV index

The months with the highest UV index in Highland Beach are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily high UV index of 7 in September leads to these guidelines:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.