December weather forecastCascade, Jamaica
December
Weather in December
Closing the year with a chilly wave, December witnesses the most significant dip in temperature settling at 27.5°C (81.5°F). A noticeable drop in rainfall to 28mm (1.1") over 11 days confirms the onset of the cold season. Despite this, minimal fluctuations occur in other parameters such as daylight hours, wind speed, and pressure levels. Cascade, amid this coolness, continues to maintain its tropical charm.Temperature
In December, Cascade experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 28°C (82.4°F) in November to a still moderately hot 27.5°C (81.5°F). A mean low-temperature of 24.9°C (76.8°F) is a distinguishing feature of December, indicating a slight dip from daytime highs.Heat index
The heat index value for December is estimated at a hot 31°C (87.8°F). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.Note that heat index values are valued for light wind and location in the shade. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. 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. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
The average relative humidity in December is 77%.Rainfall
In Cascade, during December, the rain falls for 11 days and regularly aggregates up to 28mm (1.1") of precipitation. In Cascade, during the entire year, the rain falls for 177.2 days and collects up to 687mm (27.05") of precipitation.Daylight
With an average of 11h and 0min of daylight, December has the shortest days of the year in Cascade.On the first day of December, sunrise is at 06:28 and sunset at 17:34. On the last day of the month, sunrise is at 06:44 and sunset at 17:47 EST.
Sunshine
The months with the least sunshine are November and December, with an average of 6.6h of sunshine.UV index
January, March through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A typical high UV index of 7 in December suggests the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cascade, Jamaica
- Average high temperature in December: 27.5°C
The warmest month (with the highest average high temperature) is August (29.7°C).
The month with the lowest average high temperature is January (26.8°C).
- Average low temperature in December: 24.9°C
The months with the highest average low temperature are July and August (26.8°C).
The coldest month (with the lowest average low temperature) is February (23.8°C).
Average pressure in December
Cascade, Jamaica
- Average pressure in December: 1014.5mbar
The month with the highest atmospheric pressure is January (1015.6mbar).
The month with the lowest atmospheric pressure is October (1011.4mbar).
Average wind speed in December
Cascade, Jamaica
- Average wind speed in December: 20km/h
The windiest month (with the highest average wind speed) is December (20km/h).
The calmest month (with the lowest average wind speed) is September (13km/h).
Average humidity in December
Cascade, Jamaica
- Average humidity in December: 77%
The month with the highest relative humidity is June (78%).
The month with the lowest relative humidity is March (75%).
Average rainfall in December
Cascade, Jamaica
- Average rainfall in December: 28mm
The wettest month (with the highest rainfall) is May (90mm).
The driest month (with the least rainfall) is February (19mm).
Average rainfall days in December
Cascade, Jamaica
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is September (18.4 days).
The month with the least rainy days is February (10.6 days).
Average daylight in December /
Average sunshine in December
Cascade, Jamaica
- Average daylight in December: 11h and 0min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in December: 6h and 36min
The months with the most sunshine are July and August (Average sunshine: 11h and 30min).
The months with the least sunshine are November and December (Average sunshine: 6h and 36min).
Average sunshine days in December
Cascade, Jamaica
- Average sunshine days in December: 18 days
The month with the most sunshine days is December (18 days).
The month with the least sunshine days is September (9.8 days).
Average UV index in December
Cascade, Jamaica
- Average UV index in December: 7
The months with the highest UV index are January, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is February (UV index 6).
Average cloud cover in December
Cascade, Jamaica
- Average cloud cover in December: 27
The months with the most cloud cover are January, May and November (Cloud cover 28).
The month with the least cloud cover is July (Cloud cover 21).
Average visibility in December
Cascade, Jamaica
- 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).
