December weather forecast
Port Antonio, Jamaica

Port Antonio weather in December marks the commencement of the dry season again. The drastic reduction in rainfall and cooler temperatures indicate a transition to less humid conditions. Despite fewer daylight and sunshine hours, outdoor activities remain enjoyable. Lowering of sea temperatures hint at seas getting cooler. With the UV index dropping to 8, the sun’s radiation intensity lessens noticeably.

Temperature

January through March, November and December bring Port Antonio's lowest average temperatures, reaching a high of 29°C (84.2°F).

Rainfall

In Port Antonio, during December, the rain falls for 8 days and regularly aggregates up to 279mm (10.98") of precipitation. Throughout the year, there are 125 rainfall days, and 2639mm (103.9") of precipitation is accumulated.

Sea temperature

In Port Antonio, Jamaica, in December, the average water temperature is 28.2°C (82.8°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The month with the shortest days in Port Antonio is December, with an average of 11h and 6min of daylight.
On the first day of December in Port Antonio, sunrise is at 06:21 and sunset at 17:28. On the last day of the month, sunrise is at 06:37 and sunset at 17:40 EST.

Sunshine

In December, the average sunshine in Port Antonio is 7h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 8. A UV Index estimate of 8 to 10 represents a very high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 8 in December translates into these instructions:
Swift harm can befall unprotected skin and eyes. Prioritize safety. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.