Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Half Moon Bay, Cayman Islands, experiences a transition to a still moderately hot 27.2°C (81°F) in average high-temperatures with the arrival of December, not greatly differing from November's 28°C (82.4°F). A steady low-temperature average of 26.1°C (79°F) is logged in Half Moon Bay, Cayman Islands, during December, reflecting a modest dip from daytime readings.Heat index
The heat index for December is computed to be a hot 30°C (86°F). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.Heat index's context suggests values are appropriate for shady areas and slight breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humidity
The average relative humidity in December is 76%.Rainfall
In Half Moon Bay, in December, during 20.6 rainfall days, 57mm (2.24") of precipitation is typically accumulated. Throughout the year, there are 241.1 rainfall days, and 854mm (33.62") of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 11h and 0min of daylight.On the first day of the month, sunrise is at 06:42 and sunset at 17:45. On the last day of December, sunrise is at 06:58 and sunset at 17:57 EST.
Sunshine
December has the least sunshine of the year, with an average of 6h of sunshine.UV index
The months with the highest UV index are February through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.Note: In December, a daily maximum UV index of 7 leads to the following instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
What is the temperature in December in Half Moon Bay?
What is the average humidity in December in Half Moon Bay?
How much does it rain in Half Moon Bay in December?
What is the month with the shortest days in Half Moon Bay?
How many hours of daylight does Half Moon Bay have in December?
What time are sunrise and sunset in December in Half Moon Bay?
What is the month with the least sunshine in Half Moon Bay?
How many hours of sunshine does Half Moon Bay have in December?
When is the highest UV index in Half Moon Bay?
How high is the UV index in December in Half Moon Bay?
Average temperature in December
Half Moon 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).
Average pressure in December
Half Moon 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).
Average wind speed in December
Half Moon 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).
Average humidity in December
Half Moon 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%).
Average rainfall in December
Half Moon 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).
Average rainfall days in December
Half Moon 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).
Average daylight in December /
Average sunshine in December
Half Moon 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).
Average sunshine days in December
Half Moon 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).
Average UV index in December
Half Moon 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).
Average cloud cover in December
Half Moon 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).
Average visibility in December
Half Moon 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).
Half Moon Bay, Cayman Islands
Weather forecast for your location
2. Allow the app to use your location
