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
Weather in December
Temperature
December's arrival brings an average high-temperature of a frosty 8.5°C (47.3°F), demonstrating subtle variation from the preceding month. Stillorgan logs an average low-temperature of 5.4°C (41.7°F) during the nights of December, subtly lower than its daytime highs.Humidity
In December, the average relative humidity in Stillorgan is 84%.Rainfall
In Stillorgan, during December, the rain falls for 17 days and regularly aggregates up to 55mm (2.17") of precipitation. Throughout the year, in Stillorgan, there are 200.5 rainfall days, and 530mm (20.87") of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Stillorgan. The month with the most snowfall in Stillorgan, Ireland, is December, when snow falls for 1.1 days and typically aggregates up to 9mm (0.35") of snow.Daylight
The month with the shortest days is December, with an average of 7h and 36min of daylight.On the first day of the month, sunrise is at 8:17 am and sunset at 4:10 pm. On the last day of December, sunrise is at 8:39 am and sunset at 4:16 pm GMT.
Sunshine
The average sunshine in December in Stillorgan is 4.6h.UV index
The months with the lowest UV index in Stillorgan are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What are December temperatures in Stillorgan?
What is the average humidity in December in Stillorgan?
How much does it rain in Stillorgan in December?
When does it snow the most in Stillorgan?
How much does it snow in Stillorgan in December?
What is the month with the shortest days in Stillorgan?
How many hours of daylight does Stillorgan have in December?
When is the sunrise / sunset in December in Stillorgan?
How many hours of sunshine does Stillorgan have in December?
What is the month with the lowest UV index in Stillorgan?
How high is the UV index in December in Stillorgan?
Average temperature in December
Stillorgan, Ireland
- Average high temperature in December: 8.5°C
The warmest months (with the highest average high temperature) are July and August (16.9°C).
The months with the lowest average high temperature are January and February (7.8°C).
- Average low temperature in December: 5.4°C
The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is February (4.4°C).
Average pressure in December
Stillorgan, Ireland
- Average pressure in December: 1011.1mbar
The month with the highest atmospheric pressure is May (1016mbar).
The month with the lowest atmospheric pressure is November (1008.3mbar).
Average wind speed in December
Stillorgan, Ireland
- Average wind speed in December: 25.9km/h
The windiest month (with the highest average wind speed) is December (25.9km/h).
The calmest month (with the lowest average wind speed) is July (15.9km/h).
Average humidity in December
Stillorgan, Ireland
- Average humidity in December: 84%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is March (82%).
Average rainfall in December
Stillorgan, Ireland
- Average rainfall in December: 55mm
The wettest month (with the highest rainfall) is November (71mm).
The driest month (with the least rainfall) is May (27mm).
Average rainfall days in December
Stillorgan, Ireland
- Average rainfall days in December: 17 days
The month with the highest number of rainy days is July (20.4 days).
The months with the least rainy days are March and September (14.9 days).
Average snowfall in December
Stillorgan, Ireland
- Average snowfall in December: 9mm
The month with the highest snowfall is December (9mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Stillorgan, Ireland
- Average snowfall days in December: 1.1 days
The months with the highest number of snowfall days are January and February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Stillorgan, Ireland
- Average daylight in December: 7h and 4min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is May (Average sunshine: 8h and 0min).
The month with the least sunshine is November (Average sunshine: 4h and 18min).
Average sunshine days in December
Stillorgan, Ireland
- Average sunshine days in December: 10.2 days
The month with the most sunshine days is April (11.7 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in December
Stillorgan, Ireland
- 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, November and December (UV index 2).
Average cloud cover in December
Stillorgan, Ireland
- Average cloud cover in December: 53
The months with the most cloud cover are February and November (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 48).
Average visibility in December
Stillorgan, Ireland
- Average visibility in December: 9km
The months with the highest visibility are January, March, October and November (10km).
The months with the lowest visibility are February, April, May, June, July, August, September and December (9km).
Stillorgan, Ireland
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