September weather forecast
Gulf Stream, FL

The first month of the autumn, September, is also a moderately hot month in Gulf Stream, Florida, with temperature in the range of an average low of 80.1°F (26.7°C) and an average high of 85.1°F (29.5°C).

Temperature

The initiation of September records an average high-temperature of a moderately hot 85.1°F (29.5°C), displaying a near consistency with the previous month. Throughout September, Gulf Stream records a steady low-temperature average of 80.1°F (26.7°C), a minor decrease from its daytime counterpart.

Heat index

During September, the heat index is estimated at a sweltering 95°F (35°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

June, September and December, with an average relative humidity of 75%, are the most humid months in Gulf Stream.

Rainfall

In Gulf Stream, in September, it is raining for 26.5 days, with typically 6.93" (176mm) of accumulated precipitation. In Gulf Stream, during the entire year, the rain falls for 229 days and collects up to 46.46" (1180mm) of precipitation.

Daylight

The average length of the day in September in Gulf Stream 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, in Gulf Stream, sunrise is at 7:12 am and sunset at 7:07 pm EDT.

Sunshine

The average sunshine in September in Gulf Stream, Florida, is 8.9h.

UV index

The months with the highest UV index in Gulf Stream are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: A maximum daily UV index of 7 during September morphs into the following directions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.