December weather forecast
Old Man Bay, Cayman Islands

englishespañol中文
Share

Weather in December

December brings the cool Caribbean winter to Old Man Bay along with some remnants of November's wind gusts. The reduced rainfall and increased wind speeds make it a favourable time for wind sports enthusiasts. With fewer hours of raining and an increase in the sunny spells, visitors can plan their outdoor activities more predictably. As this month signifies the end of the year, it is also characterized by the Christmas festivities and holiday season. An analysis of the data shows a decrease in minimum temperature to 26.1°C (79°F), hinting at the winter setting in and making it the coolest month as compared to the rest of the year.

Temperature

The arrival of December brings an average high-temperature of a still moderately hot 27.2°C (81°F), subtly diverging from November's 28°C (82.4°F). Old Man Bay documents a consistent average low-temperature of 26.1°C (79°F) at night during December.

Heat index

In December, the average heat index is evaluated at a hot 30°C (86°F). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

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

Rainfall

In Old Man Bay, in December, during 20.6 rainfall days, 57mm (2.24") of precipitation is typically accumulated. In Old Man Bay, during the entire year, the rain falls for 241.1 days and collects up to 854mm (33.62") of precipitation.

Daylight

With an average of 11h and 0min of daylight, December has the shortest days of the year.
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 06:58 and sunset at 17:57 EST.

Sunshine

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

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum UV index of 7 in December translates into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
[Resources]

Frequently asked questions

What is the temperature in December in Old Man Bay?

During December, Old Man Bay experiences an average high-temperature of 27.2°C (81°F) and a low-temperature of 26.1°C (79°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in December is evaluated at 30°C (86°F).

What is the average humidity in December in Old Man Bay?

The average relative humidity in December is 76%.

How many days does it rain in December in Old Man Bay?

In Old Man 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 Old Man Bay?

The month with the shortest days in Old Man Bay, Cayman Islands, is December, with an average of 11h and 0min of daylight.

What is the average length of the day in December in Old Man Bay?

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

When are sunrise and sunset in December in Old Man 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 Old Man Bay, Cayman Islands, sunrise is at 06:58 and sunset at 17:57 EST.

What is the month with the least sunshine in Old Man Bay?

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

How many hours of sunshine does Old Man Bay have in December?

In Old Man Bay, the average sunshine duration in December is 6h.

What is the month with the highest UV index in Old Man Bay?

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

What is the UV index reading in December in Old Man Bay?

The average daily maximum UV index in December in Old Man Bay, Cayman Islands, is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.

Average temperature in December
Old Man Bay, Cayman Islands

Average temperature in December - Old Man 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).

[Resources]

Average pressure in December
Old Man Bay, Cayman Islands

Average pressure in December - Old Man 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).

[Resources]

Average wind speed in December
Old Man Bay, Cayman Islands

Average wind speed in December - Old Man 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).

[Resources]

Average humidity in December
Old Man Bay, Cayman Islands

Average humidity in December - Old Man 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%).

[Resources]

Average rainfall in December
Old Man Bay, Cayman Islands

Average rainfall in December - Old Man 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).

[Resources]

Average rainfall days in December
Old Man Bay, Cayman Islands

Average rainfall days in December - Old Man 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).

[Resources]

Average daylight in December /
Average sunshine in December
Old Man Bay, Cayman Islands

Average daylight in December / Average sunshine in December - Old Man 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).

[Resources]

Average sunshine days in December
Old Man Bay, Cayman Islands

Average sunshine days in December - Old Man 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).

[Resources]

Average UV index in December
Old Man Bay, Cayman Islands

Average UV index in December - Old Man 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).

[Resources]

Average cloud cover in December
Old Man Bay, Cayman Islands

Average cloud cover in December - Old Man 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).

[Resources]

Average visibility in December
Old Man Bay, Cayman Islands

Average visibility in December - Old Man 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).

[Resources]

Old Man Bay, Cayman Islands

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location