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
At the onset of December, Calliste records an average high-temperature of a still warm 27.7°C (81.9°F), showing little deviation from the preceding month. Calliste documents a consistent average low-temperature of 26.7°C (80.1°F) at night during December.Heat index
For December, the heat index is appraised at a hot 31°C (87.8°F). Continuing activity during long-lasting exposure might induce tiredness and result in heat cramps.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
In December, the average relative humidity is 77%.Rainfall
In December, in Calliste, Grenada, the rain falls for 21.7 days. Throughout December, 55mm (2.17") of precipitation is accumulated. In Calliste, Grenada, during the entire year, the rain falls for 232 days and collects up to 739mm (29.09") of precipitation.Daylight
December has the shortest days of the year, with an average of 11h and 24min of daylight.On the first day of the month, sunrise is at 06:12 and sunset at 17:40. On the last day of December, in Calliste, sunrise is at 06:27 and sunset at 17:53 AST.
Sunshine
The month with the least sunshine in Calliste is December, with an average of 6.3h of sunshine.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 7 in December converts into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What is the temperature in December in Calliste?
What is the average humidity in December in Calliste?
How many days does it rain in December in Calliste?
What is the month with the shortest days in Calliste?
How many hours of daylight does Calliste have in December?
What time are sunrise and sunset in December in Calliste?
What is the month with the least sunshine in Calliste?
How long on average sun shines in December in Calliste?
What is the month with the highest UV index in Calliste?
What is the month with the lowest UV index in Calliste?
How high is the UV index in December in Calliste?
Average temperature in December
Calliste, Grenada
- Average high temperature in December: 27.7°C
The warmest months (with the highest average high temperature) are September and October (28.8°C).
The month with the lowest average high temperature is February (26.7°C).
- Average low temperature in December: 26.7°C
The month with the highest average low temperature is September (28.1°C).
The coldest month (with the lowest average low temperature) is February (25.8°C).
Average pressure in December
Calliste, Grenada
- Average pressure in December: 1012.7mbar
The month with the highest atmospheric pressure is June (1014.2mbar).
The month with the lowest atmospheric pressure is November (1010.7mbar).
Average wind speed in December
Calliste, Grenada
- Average wind speed in December: 28.2km/h
The windiest month (with the highest average wind speed) is February (29.4km/h).
The calmest month (with the lowest average wind speed) is September (21.5km/h).
Average humidity in December
Calliste, Grenada
- Average humidity in December: 77%
The months with the highest relative humidity are May, June and July (79%).
The months with the lowest relative humidity are February and September (76%).
Average rainfall in December
Calliste, Grenada
- Average rainfall in December: 55mm
The wettest month (with the highest rainfall) is October (110mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in December
Calliste, Grenada
- Average rainfall days in December: 21.7 days
The months with the highest number of rainy days are July and August (22.3 days).
The month with the least rainy days is April (14.8 days).
Average daylight in December /
Average sunshine in December
Calliste, Grenada
- Average daylight in December: 11h and 2min
The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 24min).
- Average sunshine in December: 6h and 2min
The months with the most sunshine are August and September (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in December
Calliste, Grenada
- Average sunshine days in December: 5.6 days
The months with the most sunshine days are April and October (9.2 days).
The month with the least sunshine days is July (4.6 days).
Average UV index in December
Calliste, Grenada
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in December
Calliste, Grenada
- Average cloud cover in December: 42
The month with the most cloud cover is November (Cloud cover 43).
The month with the least cloud cover is September (Cloud cover 35).
Average visibility in December
Calliste, Grenada
- 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).
Calliste, Grenada
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