December weather forecast and climate
George Town, Cayman Islands

The scenic waterfront in George Town, Cayman Islands, viewed from the water on a warm sunny day
The scenic waterfront in George Town, Cayman Islands, viewed from the water on a warm sunny day
The first month of the winter, December, is also a moderately hot month in George Town, Cayman Islands, with average temperature ranging between max 27°C (80.6°F) and min 23°C (73.4°F).

Temperature

In December, the average high-temperature is essentially the same as in November - a still moderately hot 27°C (80.6°F). In George Town, the average low-temperature is 23°C (73.4°F).

Rainfall

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

Sea temperature

In George Town, the average water temperature is 27.9°C (82.2°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 of daylight.

Sunshine

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 risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 7 in December transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in December in George Town?

In December, in George Town, Cayman Islands, the average high-temperature is 27°C (80.6°F), and the average low-temperature is 23°C (73.4°F).

How many days does it rain in December in George Town?

In December, in George Town, Cayman Islands, the rain falls for 6 days. Throughout December, 99mm (3.9") of precipitation is accumulated.

What is the sea water temperature in December in George Town?

In George Town, Cayman Islands, in December, the average water temperature is 27.9°C (82.2°F). 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.

What is the month with the shortest days in George Town?

With an average of 11h of daylight, December has the shortest days of the year in George Town.

How many hours of daylight does George Town have in December?

In December, the average length of the day is 11h.

What is the month with the least sunshine in George Town?

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

How many hours of sunshine does George Town have in December?

In December, the average sunshine in George Town is 7h.

When is the lowest UV index in George Town?

With an average maximum UV index of 7, December is the month with the lowest UV index in George Town.

How high is the UV index in December in George Town?

In December, the average daily maximum UV index in George Town is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV radiation.
Average temperature in December - George Town, Cayman Islands
  • Average high temperature in December: 27°C

The warmest months (with the highest average high temperature) are June, July, August and September (30°C).
Months with the lowest average high temperature are January and February (26°C).

  • Average low temperature in December: 23°C

Months with the highest average low temperature are June, July and August (27°C).
The coldest month (with the lowest average low temperature) is February (22°C).

Average rainfall in December - George Town, Cayman Islands
  • Average rainfall in December: 99mm

The wettest month (with the highest rainfall) is October (226mm).
The driest months (with the least rainfall) are February and April (13mm).

Average rainfall days in December - George Town, Cayman Islands
  • Average rainfall days in December: 6 days

The month with the highest number of rainy days is October (10 days).
Months with the least rainy days are February, March and April (4 days).

Average sea temperature in December - George Town, Cayman Islands
  • Average sea temperature in December: 27.9°C

The best months for swimming (with the highest average sea temperature) are August and September (29.9°C).
The coldest month (with the lowest average sea temperature) is February (26.5°C).

Average daylight in December / Average sunshine in December - George Town, Cayman Islands
  • Average daylight in December: 11h

The month with the longest days is June (Average daylight: 13.3h).
The month with the shortest days is December (Average daylight: 11h).

  • Average sunshine in December: 7h

The month with the most sunshine is April (Average sunshine: 10h).
Months with the least sunshine are November and December (Average sunshine: 7).

Average UV index in December - George Town, Cayman Islands
  • Average UV index in December: 7

Months with the highest UV index are March, April, May, June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 7).