December weather forecastCastledermot, Ireland
December
Weather in December
December, the first month of the winter in Castledermot, is still a chilly month, with an average temperature varying between 7.2°C (45°F) and 2.5°C (36.5°F).Temperature
A minor adjustment in Castledermot's average high-temperature is noted with the start of December, touching a still chilly 7.2°C (45°F) from November's 9.1°C (48.4°F). The temperature during December sees a subtle transition from day to night, averaging a low of 2.5°C (36.5°F).Humidity
The months with the highest humidity are November and December, with an average relative humidity of 92%.Rainfall
In Castledermot, in December, it is raining for 13.7 days, with typically 27mm (1.06") of accumulated precipitation. Throughout the year, in Castledermot, there are 167.6 rainfall days, and 283mm (11.14") of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Castledermot. In Castledermot, in December, snow falls for 1.2 days, with typically accumulated 4mm (0.16") of snow. In Castledermot, during the entire year, snow falls for 7.4 days and aggregates up to 38mm (1.5") of snow.Daylight
With an average of 7h and 42min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 8:18 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 8:40 am and sunset at 4:21 pm GMT.
Sunshine
February, November and December, with an average of 3.8h of sunshine, are months with the least sunshine in Castledermot.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. 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
Castledermot, Ireland
- Average high temperature in December: 7.2°C
The warmest month (with the highest average high temperature) is July (17.8°C).
The month with the lowest average high temperature is January (7°C).
- Average low temperature in December: 2.5°C
The month with the highest average low temperature is July (10.6°C).
The coldest month (with the lowest average low temperature) is February (1.6°C).
Average pressure in December
Castledermot, Ireland
- Average pressure in December: 1011.5mbar
The month with the highest atmospheric pressure is May (1016.1mbar).
The month with the lowest atmospheric pressure is November (1008.5mbar).
Average wind speed in December
Castledermot, Ireland
- Average wind speed in December: 18.9km/h
The windiest month (with the highest average wind speed) is February (19km/h).
The calmest month (with the lowest average wind speed) is July (12.7km/h).
Average humidity in December
Castledermot, Ireland
- Average humidity in December: 92%
The months with the highest relative humidity are November and December (92%).
The month with the lowest relative humidity is April (86%).
Average rainfall in December
Castledermot, Ireland
- Average rainfall in December: 27mm
The wettest month (with the highest rainfall) is November (41mm).
The driest month (with the least rainfall) is March (16mm).
Average rainfall days in December
Castledermot, Ireland
- Average rainfall days in December: 13.7 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is September (11.3 days).
Average snowfall in December
Castledermot, Ireland
- Average snowfall in December: 4mm
The month with the highest snowfall is November (12mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Castledermot, Ireland
- Average snowfall days in December: 1.2 days
The month with the highest number of snowfall days is February (2.1 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
Castledermot, Ireland
- Average daylight in December: 7h and 42min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in December: 3h and 48min
The month with the most sunshine is May (Average sunshine: 6h and 24min).
The months with the least sunshine are February, November and December (Average sunshine: 3h and 48min).
Average sunshine days in December
Castledermot, Ireland
- Average sunshine days in December: 12.3 days
The month with the most sunshine days is November (13.9 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in December
Castledermot, Ireland
- Average UV index in December: 2
The months with the highest UV index are June and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Castledermot, Ireland
- Average cloud cover in December: 61
The month with the most cloud cover is July (Cloud cover 68).
The month with the least cloud cover is April (Cloud cover 58).
Average visibility in December
Castledermot, Ireland
- Average visibility in December: 9km
The months with the highest visibility are February, March and December (9km).
The months with the lowest visibility are July, August and September (7km).
