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 snowfall in December
- Average snowfall 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
December
Weather in December
Temperature
Hollymount experiences a recorded average high-temperature of a still chilly 7.7°C (45.9°F) in December, closely aligned with November's 9.3°C (48.7°F). Hollymount's December nights witness minimal differential from the daytime temperatures, with averages of 3.9°C (39°F).Humidity
In December, the average relative humidity is 87%.Rainfall
In December, the rain falls for 7.5 days. Throughout December, 14mm (0.55") of precipitation is accumulated. Throughout the year, there are 101.4 rainfall days, and 163mm (6.42") of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. December is the first month it typically snows. Throughout December, in the average 0.4 snowfall days, it receives 1mm (0.04") of snow. In Hollymount, during the entire year, snow falls for 2.4 days and aggregates up to 11mm (0.43") of snow.Daylight
The month with the shortest days is December, with an average of 7h and 30min of daylight.On the first day of December, sunrise is at 8:30 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 8:53 am and sunset at 4:26 pm GMT.
Sunshine
In December, the average sunshine is 3.6h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 suggests this advice:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Hollymount in December?
What is the average humidity in December?
How many days does it rain in December?
When does it start to snow in Hollymount?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Hollymount, Ireland
- Average high temperature in December: 7.7°C
The warmest month (with the highest average high temperature) is July (16.9°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in December: 3.9°C
The month with the highest average low temperature is August (10.9°C).
The coldest month (with the lowest average low temperature) is February (3.2°C).
Average pressure in December
Hollymount, Ireland
- Average pressure in December: 1009.3mbar
The month with the highest atmospheric pressure is May (1015.4mbar).
The month with the lowest atmospheric pressure is November (1007.2mbar).
Average wind speed in December
Hollymount, Ireland
- Average wind speed in December: 20.4km/h
The windiest month (with the highest average wind speed) is January (20.8km/h).
The calmest month (with the lowest average wind speed) is July (13.5km/h).
Average humidity in December
Hollymount, Ireland
- Average humidity in December: 87%
The months with the highest relative humidity are January, October and November (88%).
The month with the lowest relative humidity is April (83%).
Average rainfall in December
Hollymount, Ireland
- Average rainfall in December: 14mm
The wettest month (with the highest rainfall) is August (22mm).
The driest month (with the least rainfall) is September (7mm).
Average rainfall days in December
Hollymount, Ireland
- Average rainfall days in December: 7.5 days
The months with the highest number of rainy days are June and July (10.6 days).
The month with the least rainy days is September (6 days).
Average snowfall in December
Hollymount, Ireland
- Average snowfall in December: 1mm
The month with the highest snowfall is January (5mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Hollymount, Ireland
- Average snowfall days in December: 0.4 days
The months with the highest number of snowfall days are January and February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Hollymount, Ireland
- Average daylight in December: 7h and 3min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is June (Average sunshine: 7h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Hollymount, Ireland
- Average sunshine days in December: 21.5 days
The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is July (14.3 days).
Average UV index in December
Hollymount, Ireland
- Average UV index in December: 2
The month with the highest UV index is June (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
Hollymount, Ireland
- Average cloud cover in December: 66
The months with the most cloud cover are July and August (Cloud cover 70).
The month with the least cloud cover is April (Cloud cover 59).
Average visibility in December
Hollymount, Ireland
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (9km).
The months with the lowest visibility are July and August (8km).
