January weather forecast
Port Antonio, Jamaica

Expect January weather in Port Antonio, Jamaica to commence with warmth. A daily high temperature revolves around 29°C (84.2°F), with nights cooling down to approximately 18°C (64.4°F). Adverse weather conditions tend to be less severe as compared to the heavy downpours that will follow in the year. Despite having the shortest daylight hours at 11.2, most of the day is filled with sunshine, making it best for outdoor exploits. However, always keep in mind that sun protection is essential with the UV index of 8.

Temperature

January through March, November and December, with an average high-temperature of 29°C (84.2°F), are marked as the coldest months.

Rainfall

In January, the rain falls for 7 days. Throughout January, 185mm (7.28") of precipitation is accumulated. In Port Antonio, Jamaica, during the entire year, the rain falls for 125 days and collects up to 2639mm (103.9") of precipitation.

Sea temperature

In Port Antonio, the average seawater temperature in January is 27.1°C (80.8°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day in January in Port Antonio is 11h and 11min.
On the first day of January, sunrise is at 06:37 and sunset at 17:41. On the last day of the month, sunrise is at 06:38 and sunset at 17:59 EST.

Sunshine

The average sunshine in January 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 value of 8 to 10 symbolizes a very high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: During January, 8 as the daily maximum UV index converts into the following advice:
It is essential to prioritize protection. Unprotected skin and eyes can suffer rapid harm. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be on guard! The reflective nature of sand and water boosts UV exposure.