September weather forecast
Negril, Jamaica

September brings a mild decrease in temperature and a small increase in rainfall to Negril. With 229mm (9.02") of rainfall spread over 14 days, it remains consistently wet, though the sea remains steadily warm, encouraging water sports. The daily hours of sunlight further reduce to 12.2 hours, but the chilling effect of shorter days is offset by the comforting sea temperature. As October arrives, an amplified amount of rainfall can be expected, while other parameters undergo minimal changes.

Temperature

Negril experiences the peak of its temperatures in July through September, when the average high-temperatures rise to 34°C (93.2°F).

Rainfall

In Negril, in September, it is raining for 14 days, with typically 229mm (9.02") of accumulated precipitation. Throughout the year, there are 127 rainfall days, and 1973mm (77.68") of precipitation is accumulated.

Sea temperature

August and September, with an average sea temperature of 29.8°C (85.6°F), are months with the warmest seawater.
Note: Water surface temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

The average length of the day in September in Negril is 12h and 14min.
On the first day of the month, sunrise is at 05:59 and sunset at 18:27. On the last day of September, in Negril, sunrise is at 06:03 and sunset at 18:02 EST.

Sunshine

In September, the average sunshine is 7h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an excessive health risk from unsafe exposure to UV radiation for average individuals.
Note: A daily maximum UV index of 12 in September translates into the following instructions:
Execute all vital precautions. Preventing sun damage is of utmost importance. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Every two hours, apply and reapply an SPF 30+ broad-spectrum sunscreen, especially after swimming or engaging in outdoor activities. Alert! Sand and water increase UV exposure due to their reflective properties.