December weather forecast
Dublin, Ireland

With December, winter is in full swing in Dublin, and temperatures keep to the colder side of the spectrum. The city's low temperature sinks to around 4.5°C (40.1°F), the lowest during the year. Clouds often gather, adding to the overcast atmosphere and scaling up the winter charm. Frequent rains, paired with chilly winds, complete the city's transition into a winter landscape. Despite the dipping thermometers and reduced daylight hours, December still holds a charm infused with the holiday spirit and wintry majesty.

Temperature

The advent of December denotes an average high-temperature of a frosty 9.3°C (48.7°F), subtly different from November's 11°C (51.8°F). Dublin sees a gentle drop from the daily peak temperature in December, with an average low settling at an icy 4.5°C (40.1°F).

Rainfall

In Dublin, in December, during 12 rainfall days, 69mm (2.72") of precipitation is typically accumulated. Throughout the year, in Dublin, there are 128 rainfall days, and 714mm (28.11") of precipitation is accumulated.

Sea temperature

In Dublin, the average seawater temperature in December is 11.3°C (52.3°F).
Note: Diving into 11.3°C (52.3°F) when it's under 10°C (50°F) can cause immediate cold shock symptoms, marked by hyperventilation.

Daylight

December has the shortest days of the year, 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 8:40 am and sunset at 4:16 pm GMT.

Sunshine

With an average of 1.7h of sunshine, December has the least sunshine of the year.

UV index

The months with the lowest UV index in Dublin are January and December, with an average maximum UV index of 0. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 0 during December translates into the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.