September weather forecast
Port Antonio, Jamaica

Entering into September, Port Antonio experiences significant weather transformations. Temperature variations are minimal, but rainfall begins to increase. The month endorses less sunshine hours and reduced daylight. Despite the shorter days, enjoyment of the sea can continue due to high sea temperatures. The UV index drops to a 12, but sun protection still remains crucial.

Temperature

Port Antonio's September showcases an average high-temperature of a still hot 30°C, hardly distinct from August's 31°C. During the nights in September, the temperature averages to a pleasant 22°C.

Rainfall

In Port Antonio, Jamaica, in September, during 14 rainfall days, 220mm of precipitation is typically accumulated. In Port Antonio, during the entire year, the rain falls for 125 days and collects up to 2639mm of precipitation.

Sea temperature

With an average sea temperature of 29.8°C, September is the month with the warmest seawater.
Note: Water surface temperatures from 25°C to 29°C are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

In Port Antonio, the average length of the day in September is 12h and 14min.
On the first day of September, sunrise is at 05:51 and sunset at 18:20. On the last day of the month, sunrise is at 05:56 and sunset at 17:55 EST.

Sunshine

September through November, with an average of 6h of sunshine, are months with the least sunshine in Port Antonio.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an extreme threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 12 translates into the following recommendations:
Utilize every vital safety procedure. Individuals with light skin may endure burns in less than 5 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Even if the day is cloudy, sunscreen with SPF of at least 30 should be applied generously and reapplied often, particularly after swimming or outdoor exercise. Caution! Sand and water surfaces escalate the UV intensity from the Sun.