September weather forecast
Fort George, Jamaica

September, the first month of the autumn in Fort George, is still a tropical month, with an average temperature fluctuating between 23.3°C (73.9°F) and 31.4°C (88.5°F).

Temperature

The introduction of September sees an average high-temperature of a still tropical 31.4°C (88.5°F), hardly deviating from August. Throughout the month of September, Fort George observes an average nighttime temperature of 23.3°C (73.9°F).

Heat index

The heat index value for September is computed to be a scorching 42°C (107.6°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. 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 especially crucial for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. 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

In Fort George, the average relative humidity in September is 79%.

Rainfall

In September, the rain falls for 23.1 days. Throughout September, 106mm (4.17") of precipitation is accumulated. Throughout the year, in Fort George, there are 265.1 rainfall days, and 806mm (31.73") of precipitation is accumulated.

Daylight

In Fort George, Jamaica, the average length of the day in September is 12h and 14min.
On the first day of September, sunrise is at 05:54 and sunset at 18:22. On the last day of the month, sunrise is at 05:59 and sunset at 17:58 EST.

Sunshine

The average sunshine in September is 10.9h.

UV index

January through April, September, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Fort George. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum UV index of 6 in September translates into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.