December weather forecastKillyleagh, United Kingdom
December
Weather in December
December, the first month of the winter in Killyleagh, is still a chilly month, with an average temperature fluctuating between 8.5°C (47.3°F) and 6.1°C (43°F).Temperature
As Killyleagh welcomes December, the average high-temperature stabilizes at a chilly 8.5°C (47.3°F), showing little deviation from November's 10.2°C (50.4°F). Killyleagh, in the month of December, notes an average low temperature of 6.1°C (43°F), indicating a small decrease from the daytime highs.Humidity
In December, the average relative humidity is 82%.Rainfall
In December, in Killyleagh, the rain falls for 12.4 days. Throughout December, 32mm (1.26") of precipitation is accumulated. In Killyleagh, during the entire year, the rain falls for 167.4 days and collects up to 395mm (15.55") of precipitation.Snowfall
Months with snowfall in Killyleagh are January through March, November and December. The month with the most snowfall is December, when snow falls for 1 days and typically aggregates up to 8mm (0.31") of snow.Daylight
The month with the shortest days in Killyleagh, United Kingdom, is December, with an average of 7h and 24min of daylight.On the first day of December, sunrise is at 8:21 am and sunset at 4:02 pm. On the last day of the month, sunrise is at 8:43 am and sunset at 4:07 pm GMT.
Sunshine
In Killyleagh, the average sunshine in December is 4.3h.UV index
January through March and December, with an average maximum UV index of 2, are months with the lowest UV index in Killyleagh. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 2 in December suggests the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Killyleagh, United Kingdom
- Average high temperature in December: 8.5°C
The warmest month (with the highest average high temperature) is August (16.3°C).
The month with the lowest average high temperature is February (7.5°C).
- Average low temperature in December: 6.1°C
The month with the highest average low temperature is August (13.2°C).
The coldest month (with the lowest average low temperature) is February (4.9°C).
Average pressure in December
Killyleagh, United Kingdom
- Average pressure in December: 1009.9mbar
The month with the highest atmospheric pressure is May (1015.7mbar).
The month with the lowest atmospheric pressure is November (1007.7mbar).
Average wind speed in December
Killyleagh, United Kingdom
- Average wind speed in December: 28.9km/h
The windiest month (with the highest average wind speed) is December (28.9km/h).
The calmest month (with the lowest average wind speed) is June (17.3km/h).
Average humidity in December
Killyleagh, United Kingdom
- Average humidity in December: 82%
The months with the highest relative humidity are July and August (85%).
The months with the lowest relative humidity are March, April and November (81%).
Average rainfall in December
Killyleagh, United Kingdom
- Average rainfall in December: 32mm
The wettest month (with the highest rainfall) is November (52mm).
The driest month (with the least rainfall) is May (20mm).
Average rainfall days in December
Killyleagh, United Kingdom
- Average rainfall days in December: 12.4 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is September (10.8 days).
Average snowfall in December
Killyleagh, United Kingdom
- Average snowfall in December: 8mm
The month with the highest snowfall is December (8mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Killyleagh, United Kingdom
- Average snowfall days in December: 1 days
The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Killyleagh, United Kingdom
- Average daylight in December: 7h and 24min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in December: 4h and 18min
The months with the most sunshine are May and June (Average sunshine: 7h and 54min).
The months with the least sunshine are January, February and November (Average sunshine: 4h and 6min).
Average sunshine days in December
Killyleagh, United Kingdom
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is August (9.5 days).
Average UV index in December
Killyleagh, United Kingdom
- Average UV index in December: 2
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in December
Killyleagh, United Kingdom
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are April and May (Cloud cover 49).
Average visibility in December
Killyleagh, United Kingdom
- 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).
