September weather forecast
Gulfport, FL

September, the first month of the autumn in Gulfport, is still a hot month, with an average temperature fluctuating between 77.9°F (25.5°C) and 86.5°F (30.3°C).

Temperature

At the onset of September, Gulfport records an average high-temperature of a still hot 86.5°F (30.3°C), showing little deviation from the preceding month. Gulfport marks an average drop to a moderately hot 77.9°F (25.5°C) during nighttime in September, following the high of the day.

Heat index

September's mean heat index is computed to be a fiery hot 98.6°F (37°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

The average relative humidity in September is 74%.

Rainfall

In Gulfport, in September, it is raining for 17.5 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 122.3 rainfall days, and 9.45" (240mm) of precipitation is accumulated.

Ocean temperature

In Gulfport, the average seawater temperature in September is 84.7°F (29.3°C).
Note: Water temperature from 77°F (25°C) to 84.2°F (29°C) is considered very warm, making water activities enjoyable for prolonged periods without any uncomfortable sensations.

Daylight

The average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 7:09 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:17 pm EDT.

Sunshine

The average sunshine in September is 9.2h.

UV index

The months with the highest UV index in Gulfport, Florida, 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 exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the maximum UV index of 7 suggests these recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Stay sun-safe with clothing that is both closely woven and worn loosely. Alert! The Sun's UV rays are heightened by the reflection of sand and water.