September weather forecast
Southfield, Jamaica

September, the first month of the autumn in Southfield, is still a warm month, with an average temperature varying between 29.3°C (84.7°F) and 21.8°C (71.2°F).

Temperature

September's presence records an average high-temperature of a warm 29.3°C (84.7°F), closely mirroring August's climate. In the month of September, the average temperature in Southfield dips to an agreeable 21.8°C (71.2°F) during the night.

Heat index

September's heat index is estimated at a torrid 37°C (98.6°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. Direct exposure to sunlight could raise the heat index 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. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. 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 particularly meaningful for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In September, the average relative humidity is 85%.

Rainfall

In Southfield, in September, during 27.3 rainfall days, 190mm (7.48") of precipitation is typically accumulated. Throughout the year, there are 297.9 rainfall days, and 1472mm (57.95") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 14min.
On the first day of the month, sunrise is at 05:56 and sunset at 18:24. On the last day of September, sunrise is at 06:00 and sunset at 17:59 EST.

Sunshine

The average sunshine in September is 9.8h.

UV index

In Southfield, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.