December weather forecast
New Kingston, Jamaica

Wrapping up the year, December sees temperatures drop marginally from November, with the low hitting 22.4°C (72.3°F). From a broader perspective, December resembles January's weather conditions, offering a cool and calm period that breaks from the higher temperatures of past months. A decrease in rainfall is recorded, while daylight hours reach their yearly low. It continues the trend of shorter days as seen in November, moving New Kingston gradually towards a fresh year of changing climates.

Temperature

New Kingston signifies an average high-temperature of a still warm 27.8°C (82°F) in December, closely mirroring the 28.6°C (83.5°F) of November. The nighttime temperature in New Kingston dips to an agreeable 22.4°C (72.3°F) on average during December.

Heat index

In December, the average heat index is estimated at a tropical 32°C (89.6°F). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.
The metrics for the heat index are tailored for both shady environments and light winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

The average relative humidity in December is 81%.

Rainfall

In New Kingston, in December, it is raining for 25.7 days, with typically 76mm (2.99") of accumulated precipitation. Throughout the year, there are 310.9 rainfall days, and 1286mm (50.63") of precipitation is accumulated.

Sea temperature

In New Kingston, in December, the average water temperature is 28.2°C (82.8°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.

Daylight

December has the shortest days of the year in New Kingston, with an average of 11h and 6min of daylight.
On the first day of the month, sunrise is at 06:22 and sunset at 17:30. On the last day of December, sunrise is at 06:38 and sunset at 17:42 EST.

Sunshine

December has the least sunshine of the year in New Kingston, with an average of 6.5h of sunshine.

UV index

January through May, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high daily UV index of 6 during December translates into the following directions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.