September weather forecast
Mile Gully, Jamaica

September brings the highest rainfall with a dramatic rise to 190mm (7.48") from the previous 145mm (5.71"). It also marks a period of increased cloud cover, reducing sunshine hours as compared to August. The wind speed drops to a yearly low, reflecting more calm and serene days. The month closes the summer season with a bang, introducing the city to more cloudy and rain-filled days.

Temperature

The shift into September finds Mile Gully at an average high-temperature of a warm 29.3°C (84.7°F), closely comparable to August's conditions. Mile Gully records an average low-temperature of 21.8°C (71.2°F) throughout the month of September.

Heat index

For September, the heat index is computed to be a fiery hot 37°C (98.6°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in September is 85%.

Rainfall

In September, in Mile Gully, the rain falls for 27.3 days. Throughout September, 190mm (7.48") of precipitation is accumulated. Throughout the year, in Mile Gully, there are 297.9 rainfall days, and 1472mm (57.95") of precipitation is accumulated.

Daylight

In Mile Gully, the average length of the day in September is 12h and 14min.
On the first day of September in Mile Gully, sunrise is at 05:55 and sunset at 18:23. On the last day of the month, sunrise is at 06:00 and sunset at 17:59 EST.

Sunshine

In Mile Gully, the average sunshine in September is 9.8h.

UV index

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: A maximum daily UV index of 6 during September morphs into the following directions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.