September weather forecast
Diamondhead, MS

A transition towards cooler temperatures characterizes September in Diamondhead. Unlike August, the reduction in maximum temperature to 86°F (30°C) is easily felt, hinting at the onset of fall. The retention of 12.3 daylight hours also differentiates this month from its antecedent. Centrally, the wind patterns observe a slight increase to 6.5mph (10.5km/h) that helps moderate the lingering summer heat. Although precipitation reduces to lesser than one inch, the high relative humidity of 75% maintains the moisture levels in September.

Temperature

September's onset records a minor alteration in the average high-temperature to a still hot 86°F (30°C) from August's 89.2°F (31.8°C). During the month of September, an average temperature of 74.3°F (23.5°C) is noted during the nights.

Heat index

The heat index value for September is estimated at a sweltering 96.8°F (36°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. 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. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The average relative humidity in September in Diamondhead is 75%.

Rainfall

In Diamondhead, Mississippi, during September, the rain falls for 15.4 days and regularly aggregates up to 0.83" (21mm) of precipitation. Throughout the year, in Diamondhead, there are 131.5 rainfall days, and 12.01" (305mm) of precipitation is accumulated.

Snowfall

In Diamondhead, Mississippi, snow does not fall in February through December.

Daylight

The average length of the day in September in Diamondhead is 12h and 20min.
On the first day of September, sunrise is at 6:34 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:43 pm CDT.

Sunshine

In September, the average sunshine is 10.1h.

UV index

In Diamondhead, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index, 6 during September, leads to the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. 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. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.