September weather forecast
Mona Heights, Jamaica

September, the first month of the autumn in Mona Heights, is also a hot month, with temperature in the range of an average low of 24.1°C (75.4°F) and an average high of 30.1°C (86.2°F).

Temperature

The onset of September brings with it an average high-temperature of a still tropical 30.1°C (86.2°F), showing a negligible variation from the month before. Throughout September, Mona Heights experiences a low-temperature average of 24.1°C (75.4°F).

Heat index

During September, the heat index is appraised at a sweltering 38°C (100.4°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely vital to babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In September, the average relative humidity in Mona Heights is 81%.

Rainfall

In Mona Heights, Jamaica, during September, the rain falls for 27.1 days and regularly aggregates up to 154mm (6.06") of precipitation. Throughout the year, there are 310.9 rainfall days, and 1286mm (50.63") 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 05:52 and sunset at 18:20. On the last day of September, in Mona Heights, sunrise is at 05:57 and sunset at 17:56 EST.

Sunshine

August and September, with an average of 10.8h of sunshine, are months with the most sunshine in Mona Heights.

UV index

June through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum UV index of 7 in September translates into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.