December weather forecast
Saint Ann's Bay, Jamaica

As the year concludes, December brings along a noticeable change in the weather in Saint Ann's Bay. With a further decrease in temperature, the month registers a max of 27.2°C (81°F), drawing a sharp contrast to the warmer months of the year. As a definitive end to the rainy season, December exhibits lowered rainfall, indicative of the fully-fledged dry season. Meanwhile, the other elements including humidity, sea temperature, and visibility proceed along established lines. Conclusively, December ushers the city into the heart of the dry season, providing a fitting climatic end to the year.

Temperature

With the arrival of December, Saint Ann's Bay's average high-temperature registers at a still moderately hot 27.2°C (81°F), indicating a subtle variation from the previous month. Night temperatures in December in Saint Ann's Bay, Jamaica, exhibit a subtle decrease, settling at an average of 24.2°C (75.6°F).

Heat index

The heat index for December is evaluated at a hot 30°C (86°F). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

Humidity

May, June, November and December, with an average relative humidity of 79%, are the most humid months.

Rainfall

In Saint Ann's Bay, in December, it is raining for 17.3 days, with typically 43mm (1.69") of accumulated precipitation. In Saint Ann's Bay, during the entire year, the rain falls for 217.3 days and collects up to 649mm (25.55") of precipitation.

Sea temperature

In December, the average sea temperature in Saint Ann's Bay is 28.3°C (82.9°F).
Note: Engaging in water activities, such as swimming or diving, in temperatures from 25°C (77°F) to 29°C (84.2°F) is very pleasurable for extended periods, without any discomfort.

Daylight

With an average of 11h and 0min of daylight, December has the shortest days of the year.
On the first day of December in Saint Ann's Bay, sunrise is at 06:25 and sunset at 17:31. On the last day of the month, sunrise is at 06:40 and sunset at 17:43 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 are April through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The average daily UV index of 7 in December transforms into the following instructions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Alert! UV radiation becomes sharper due to reflections from sand and water.