December weather forecast
Ireland

December marks the beginning of winter in Ireland, with average temperatures dropping between 3°C (37.4°F) and 8°C (46.4°F). This decrease in temperature from November is a clear sign of the arrival of the coldest season of the year.

Compared to November, December days are the shortest of the year, due to the winter solstice in late December. Daylight hours reduce to approximately 7 hours per day by the end of the month. The amount of sunshine decreases further, with Dublin typically recording about 50 hours of sunshine throughout December, the lowest for the year.

Rainfall in December averages between 80mm (3.15") and 120mm (4.72"), similar to November's levels. The west of Ireland consistently receives more precipitation than the east. Wind conditions remain severe, particularly in the western coastal areas that are exposed to Atlantic storms.

Sea temperatures around Ireland's coast continue to decrease in December, averaging between 9°C (48.2°F) and 10°C (50°F). The coastal regions, though cooler, continue to experience a slightly milder climate due to the moderating influence of the surrounding sea.

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• Dublin - December »
  The month with the least sunshine in Dublin is December, with an average of 1.7h of sunshine. The month with the shortest days in Dublin is December, with an average of 7h and 36min of daylight.
• Cork - December »
  The month with the lowest UV index in Cork is December, with an average maximum UV index of 0. December has the shortest days of the year in Cork with an average of 7h and 54min of daylight.
• Galway - December »
  The month with the shortest days in Galway is December, with an average of 7h and 36min of daylight. The month with the shortest days in Galway is December, with an average of 7h and 36min of daylight.
• Limerick - December »
  January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Limerick, Ireland. January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Limerick.
• Waterford - December »
  The month with the shortest days in Waterford is December, with an average of 7h and 48min of daylight. The month with the lowest UV index in Waterford is December, with an average maximum UV index of 0.
• Drogheda - December »
  In Drogheda in December, it is raining for 12.7 days, with typically 23mm (0.91") of accumulated precipitation. The month with the shortest days in Drogheda is December, with an average of 7h and 30min of daylight.
• Dundalk - December »
  The month with the shortest days in Dundalk is December, with an average of 7h and 30min of daylight. The month with the shortest days in Dundalk is December, with an average of 7h and 30min of daylight.
• Swords - December »
  Compared to November, December brings cooler temperatures, shorter daylight hours, and an increase in relative humidity to 83.1%, making it the most humid month of the year. December has the shortest days of the year in Swords, with an average of 7h and 36min of daylight.
• Bray - December »
  In Bray in December, during 1.1 snowfall days, 9mm (0.35") of snow is typically accumulated. The final month, December in Bray marks the heart of winter with temperatures averaging from 8.5°C (47.3°F) to 5.4°C (41.7°F).
• Kilkenny - December »
  December is the most humid month in Kilkenny with an average relative humidity of 81.8%. December has the shortest days of the year in Kilkenny, with an average of 7h and 42min of daylight.
• Ennis - December »
  In Ennis, during December, the rain falls for 14.4 days and regularly aggregates up to 33mm (1.3") of precipitation. In Ennis, during December, the rain falls for 14.4 days and regularly aggregates up to 33mm (1.3") of precipitation.