December weather forecast
George Town, Cayman Islands

Concluding the year, December observes highs at a comfortable 27°C (80.6°F), depicting a significant relief from the summer heat. Rainfall becomes less intense, markedly dropping to 99mm (3.9"), lowering the frequency of showers considerably. The sea temperature hovers around 27.9°C (82.2°F), offering a pleasant change for water sports enthusiasts. The daylight hours continue to shorten, signaling the onset of winter. The UV index dips to 7, suggesting a reduced need for strict sun protection.

Temperature

With the advent of December, George Town's high-temperatures adjust to a still warm 27°C (80.6°F), closely aligning with the preceding month. George Town records a mild decrease in temperature during the nights of December, averaging a still moderately hot 23°C (73.4°F).

Rainfall

In George Town, in December, it is raining for 6 days, with typically 99mm (3.9") of accumulated precipitation. Throughout the year, in George Town, Cayman Islands, there are 80 rainfall days, and 1282mm (50.47") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature is 27.9°C (82.2°F).
Note: Water temperature ranging between 25°C (77°F) and 29°C (84.2°F) is considered very warm and pleasing for everyone. It allows for enjoyable water activities over extended periods without discomfort.

Daylight

The month with the shortest days is December, with an average of 11h and 0min of daylight.
On the first day of December in George Town, Cayman Islands, sunrise is at 06:43 and sunset at 17:46. On the last day of the month, sunrise is at 06:59 and sunset at 17:58 EST.

Sunshine

The months with the least sunshine in George Town are November and December, with an average of 7h of sunshine.

UV index

With an average maximum UV index of 7, December is the month with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In December, an average UV index of 7 transforms into the following instructions:
Guard oneself from overexposure. Defence against sun injury is vital. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! Reflecting off water and sand, UV rays are much stronger.