December weather forecastDalkey, Ireland
December
Weather in December
December, the first month of the winter in Dalkey, is still a chilly month, with an average temperature fluctuating between 5.4°C (41.7°F) and 8.5°C (47.3°F).Temperature
Transitioning into December, Dalkey records an average high-temperature of a frosty 8.5°C (47.3°F), almost identical to November's 10.1°C (50.2°F). Nights in Dalkey during December maintain a steady temperature, averaging at a wintry 5.4°C (41.7°F).Humidity
In December, the average relative humidity in Dalkey, Ireland, is 84%.Rainfall
In Dalkey, during December, the rain falls for 17 days and regularly aggregates up to 55mm (2.17") of precipitation. In Dalkey, during the entire year, the rain falls for 200.5 days and collects up to 530mm (20.87") of precipitation.Snowfall
January through March, November and December are months with snowfall in Dalkey. The month with the most snowfall in Dalkey is December, when snow falls for 1.1 days and typically aggregates up to 9mm (0.35") of snow.Daylight
With an average of 7h and 36min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 8:16 am and sunset at 4:10 pm. On the last day of the month, sunrise is at 8:39 am and sunset at 4:16 pm GMT.
Sunshine
In Dalkey, the average sunshine in December is 4.6h.UV index
The months with the lowest UV index in Dalkey 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 average person.Note: The UV index of 2 in December translates into these instructions:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Dalkey, 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
Dalkey, 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
Dalkey, 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
Dalkey, 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
Dalkey, 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
Dalkey, 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
Dalkey, 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
Dalkey, 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
Dalkey, Ireland
- Average daylight in December: 7h and 36min
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 36min
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
Dalkey, 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
Dalkey, 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
Dalkey, 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
Dalkey, 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).
