September weather forecast
Hobe Sound, FL

The first month of the autumn, September, is still a warm month in Hobe Sound, Florida, with an average temperature fluctuating between 79.2°F (26.2°C) and 84.7°F (29.3°C).

Temperature

September brings a marginal elevation to a moderately hot 84.7°F (29.3°C) from August's 86.5°F (30.3°C) in Hobe Sound's average high-temperatures. September nights reflect a consistent temperature dip to a still warm 79.2°F (26.2°C), a slight descent from daytime peaks.

Heat index

Throughout September, the heat index is estimated at a torrid 95°F (35°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In Hobe Sound, Florida, the average relative humidity in September is 76%.

Rainfall

In Hobe Sound, Florida, in September, it is raining for 24.7 days, with typically 5.35" (136mm) of accumulated precipitation. Throughout the year, there are 227.4 rainfall days, and 44.72" (1136mm) of precipitation is accumulated.

Daylight

The average length of the day in September in Hobe Sound is 12h and 19min.
On the first day of September in Hobe Sound, sunrise is at 7:00 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:07 pm EDT.

Sunshine

The average sunshine in September in Hobe Sound, Florida, is 8.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 7 in September translates into these instructions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.