December weather forecast
Cork, Ireland

With the arrival of December, Cork ushers in the winter season. December exhibits the lowest sunshine hours of the year, with an average of 2 hours a day, casting a cozy winter ambiance over the city. Christmas celebrations brighten up the city streets, creating a warm contrast to the cold, winter weather. Although the sea temperature drops, it still holds a moderate warmth compared to many other European cities. Even with colder temperatures and shorter days, the holiday spirit in Cork shines through making it a delightful time to visit.

Temperature

Entering December, the average high-temperature is recorded at a chilly 9°C (48.2°F), exhibiting a minimal shift from November's 10°C (50°F). Cork, during the nights of December, averages a temperature close to its daytime high, at an icy 4°C (39.2°F).

Rainfall

December is the month with the most rainfall. Rain falls for 20 days and accumulates 120mm (4.72") of precipitation.

Sea temperature

In Cork, in December, the average water temperature is 11.2°C (52.2°F).
Note: With the appropriate swimsuit, one can swim in 11.2°C (52.2°F) even if temperatures dip below 10°C (50°F); otherwise, be ready for cold shock and breath issues. A fleeting swim around 13°C (55.4°F) is distressing.

Daylight

The month with the shortest days is December, with an average of 7h and 54min of daylight.
On the first day of the month, sunrise is at 8:19 am and sunset at 4:26 pm. On the last day of December, in Cork, Ireland, sunrise is at 8:41 am and sunset at 4:32 pm GMT.

Sunshine

January, February, November and December, with an average of 2h of sunshine, are months with the least sunshine in Cork.

UV index

The month with the lowest UV index in Cork, Ireland, is December, with an average maximum UV index of 0. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 0 during December leads to these instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.