December weather forecast
Sandy Bay, Jamaica

December in Sandy Bay brings in the year-end with notably cooler nights and the second-lowest rainfall totals of 28mm (1.1"). The wind gust speed reaches its maximum, causing heavy sways and surf waves over the sea. Though the high temperature hovers around the year's average, a perceptible drop in night temperatures implies oncoming winter conditions. This period is ideal for tourists seeking a blend of cool and warm tropical climates. Holidaying during this time allows the enjoyment of warm days, cooler nights, and delightful wind conditions.

Temperature

December's advent in Sandy Bay, Jamaica, denotes a minor fluctuation in the average high-temperature to a still warm 27.5°C (81.5°F) from November's 28°C (82.4°F). The temperature in Sandy Bay during December sees a subtle transition from day to night, averaging a low of 24.9°C (76.8°F).

Heat index

During December, the heat index is computed to be a tropical 31°C (87.8°F). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to 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.

Humidity

In Sandy Bay, the average relative humidity in December is 77%.

Rainfall

In Sandy Bay, during December, the rain falls for 11 days and regularly aggregates up to 28mm (1.1") of precipitation. Throughout the year, there are 177.2 rainfall days, and 687mm (27.05") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature in Sandy Bay, Jamaica, is 28.3°C (82.9°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

With an average of 11h and 0min of daylight, December has the shortest days of the year in Sandy Bay.
On the first day of the month, sunrise is at 06:28 and sunset at 17:34. On the last day of December, sunrise is at 06:44 and sunset at 17:46 EST.

Sunshine

The months with the least sunshine are November and December, with an average of 6.6h of sunshine.

UV index

The months with the highest UV index in Sandy Bay are January, March through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 7 during December translates into the following directions:
Resist overexposure. Safeguarding from solar damage is indispensable. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Beware! Reflections from sand and water can intensify the Sun's UV radiation.