December weather forecast
Kingston, Jamaica

The first month of the winter, December, is still a hot month in Kingston, Jamaica, with an average temperature fluctuating between 21.8°C (71.2°F) and 30.6°C (87.1°F).

Temperature

In Kingston, the average high-temperature in December is practically the same as in November - a still tropical 30.6°C (87.1°F). The average low-temperature, in Kingston, Jamaica, is 21.8°C (71.2°F).

Heat index

In December, the average heat index is evaluated at a very hot 38°C (100.4°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, differences in body mass, height, and shape, clothing, and wind affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Kingston, the average relative humidity in December is 74%.

Rainfall

In Kingston, in December, it is raining for 6 days, with typically 47mm (1.85") of accumulated precipitation. In Kingston, during the entire year, the rain falls for 93 days and collects up to 813mm (32.01") of precipitation.

Sea temperature

In Kingston, in December, the average water temperature is 28.3°C (82.9°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

The month with the shortest days is December, with an average of 11h and 4min of daylight.
On the first day of December in Kingston, Jamaica, sunrise is at 06:22 and sunset at 17:30. On the last day of the month, sunrise is at 06:38 and sunset at 17:42 EST.

Sunshine

In Kingston, the average sunshine in December is 7.6h.

UV index

January and December, with an average maximum UV index of 8, are months with the lowest UV index in Kingston. A UV Index estimate of 8 to 10 represents a very high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 8 translate into the following recommendations:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.