December weather forecast
Gregory Park, Jamaica

The first month of the winter, December, is also a moderately hot month in Gregory Park, Jamaica, with an average temperature fluctuating between 28.9°C (84°F) and 21.5°C (70.7°F).

Temperature

With the start of December, Gregory Park measures an average high-temperature of a still warm 28.9°C (84°F), not significantly differing from November's 29.7°C (85.5°F). An average low-temperature of 21.5°C (70.7°F) is recorded during the nights in December in Gregory Park.

Heat index

The heat index in December is calculated to be a fiery hot 35°C (95°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

October through December, with an average relative humidity of 81%, are the most humid months in Gregory Park, Jamaica.

Rainfall

In Gregory Park, in December, during 19.9 rainfall days, 42mm (1.65") of precipitation is typically accumulated. In Gregory Park, during the entire year, the rain falls for 265.1 days and collects up to 806mm (31.73") of precipitation.

Daylight

December has the shortest days of the year, with an average of 11h and 6min of daylight.
On the first day of December, sunrise is at 06:23 and sunset at 17:30. On the last day of the month, sunrise is at 06:38 and sunset at 17:43 EST.

Sunshine

With an average of 6.7h of sunshine, December has the least sunshine of the year.

UV index

The months with the lowest UV index are January through April, September, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index, 6 in December, converts into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.