December weather forecast
Gun Bay, Cayman Islands

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Weather in December

December in Gun Bay signals the year-end with the onset of the city's mild winter weather. The wind speed hits its annual peak at 26.4km/h (16.4mph) providing a cool touch to the warm days. Simultaneously, the daylight hours reduce further, adding to the cozy winter ambiance. Although it contrasts with the preceding months, December’s weather still manages to maintain its tropical charm. In essence, December in Gun Bay illustrates a serene weather picture, bringing the climatic cycle to a calm closure.

Temperature

In December, Gun Bay experiences a minor shift in meteorological conditions with average high-temperatures marked at a still warm 27.2°C (81°F), closely mirroring the climate in November. December nights in Gun Bay witness a mild cool down to an average low of 26.1°C (79°F).

Heat index

The heat index in December is estimated at a tropical 30°C (86°F). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.
One should consider that heat index numbers are for shaded settings and light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

In Gun Bay, the average relative humidity in December is 76%.

Rainfall

In Gun Bay, in December, during 20.6 rainfall days, 57mm (2.24") of precipitation is typically accumulated. Throughout the year, in Gun Bay, Cayman Islands, there are 241.1 rainfall days, and 854mm (33.62") of precipitation is accumulated.

Daylight

December has the shortest days of the year in Gun Bay, Cayman Islands, with an average of 11h and 0min of daylight.
On the first day of December, sunrise is at 06:42 and sunset at 17:45. On the last day of the month, sunrise is at 06:57 and sunset at 17:57 EST.

Sunshine

With an average of 6h of sunshine, December has the least sunshine of the year in Gun Bay.

UV index

The months with the highest UV index are February through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: A maximum UV index of 7 in December translates into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
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Frequently asked questions

What is the temperature in December in Gun Bay?

In December, the average high-temperature and low-temperature in Gun Bay, Cayman Islands, are 27.2°C (81°F) and 26.1°C (79°F) respectively. In December, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 30°C (86°F).

What is the average humidity in December in Gun Bay?

In December, the average relative humidity in Gun Bay, Cayman Islands, is 76%.

How many days does it rain in December in Gun Bay?

In Gun Bay, in December, during 20.6 rainfall days, 57mm (2.24") of precipitation is typically accumulated.

What is the month with the shortest days in Gun Bay?

December has the shortest days of the year in Gun Bay, Cayman Islands, with an average of 11h and 0min of daylight.

How many hours of daylight does Gun Bay have in December?

In December, the average day length in Gun Bay, Cayman Islands, is 10h and 59min.

When is the sunrise / sunset in December in Gun Bay?

In December, on the first day of the month, sunrise is at 06:42 and sunset at 17:45. On the last day of the month, in Gun Bay, sunrise is at 06:57 and sunset at 17:57 EST.

What is the month with the least sunshine in Gun Bay?

December has the least sunshine of the year in Gun Bay, with an average of 6h of sunshine.

How many hours of sunshine does Gun Bay have in December?

The average sunshine duration in December in Gun Bay is 6h.

When is the highest UV index in Gun Bay?

The months with the highest UV index in Gun Bay are February through December, with an average maximum UV index of 7.

How high is the UV index in December in Gun Bay?

In December, the average daily maximum UV index in Gun Bay is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.

Average temperature in December
Gun Bay, Cayman Islands

Average temperature in December - Gun Bay, Cayman Islands
  • Average high temperature in December: 27.2°C

The warmest month (with the highest average high temperature) is August (29.7°C).
The month with the lowest average high temperature is February (26.2°C).

  • Average low temperature in December: 26.1°C

The month with the highest average low temperature is August (28.6°C).
The coldest month (with the lowest average low temperature) is March (24.9°C).

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Average pressure in December
Gun Bay, Cayman Islands

Average pressure in December - Gun Bay, Cayman Islands
  • Average pressure in December: 1015.2mbar

The month with the highest atmospheric pressure is January (1016.3mbar).
The month with the lowest atmospheric pressure is October (1011.7mbar).

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Average wind speed in December
Gun Bay, Cayman Islands

Average wind speed in December - Gun Bay, Cayman Islands
  • Average wind speed in December: 26.4km/h

The windiest month (with the highest average wind speed) is December (26.4km/h).
The calmest month (with the lowest average wind speed) is September (17.2km/h).

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Average humidity in December
Gun Bay, Cayman Islands

Average humidity in December - Gun Bay, Cayman Islands
  • Average humidity in December: 76%

The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is September (74%).

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Average rainfall in December
Gun Bay, Cayman Islands

Average rainfall in December - Gun Bay, Cayman Islands
  • Average rainfall in December: 57mm

The wettest month (with the highest rainfall) is October (159mm).
The driest month (with the least rainfall) is March (24mm).

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Average rainfall days in December
Gun Bay, Cayman Islands

Average rainfall days in December - Gun Bay, Cayman Islands
  • Average rainfall days in December: 20.6 days

The month with the highest number of rainy days is October (26.5 days).
The month with the least rainy days is March (16 days).

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Average daylight in December /
Average sunshine in December
Gun Bay, Cayman Islands

Average daylight in December / Average sunshine in December - Gun Bay, Cayman Islands
  • Average daylight in December: 11h and 0min

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • Average sunshine in December: 6h and 0min

The months with the most sunshine are May and July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

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Average sunshine days in December
Gun Bay, Cayman Islands

Average sunshine days in December - Gun Bay, Cayman Islands
  • Average sunshine days in December: 4.3 days

The month with the most sunshine days is March (9.3 days).
The month with the least sunshine days is November (2.5 days).

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Average UV index in December
Gun Bay, Cayman Islands

Average UV index in December - Gun Bay, Cayman Islands
  • Average UV index in December: 7

The months with the highest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is January (UV index 6).

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Average cloud cover in December
Gun Bay, Cayman Islands

Average cloud cover in December - Gun Bay, Cayman Islands
  • Average cloud cover in December: 39

The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is April (Cloud cover 28).

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Average visibility in December
Gun Bay, Cayman Islands

Average visibility in December - Gun Bay, Cayman Islands
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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Gun Bay, Cayman Islands

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