Dublin
Ireland
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Dublin, Ireland

A sunset view of the illuminated Ha Penny Bridge reflected in the water below, in Dublin, Ireland
A sunset view of the illuminated Ha Penny Bridge reflected in the water below, in Dublin, Ireland
December signals the start of the temperate winter and the mildly cold weather. The sunshine lasts daily only for 1.7 hours, while daylight is available for 8 hours at the maximum. Daily average high is a chilly 7.8°C (46°F), and frost is common along with early morning fog. Snow is a remote possibility in the face of cold winds.
A foggy morning calls for an alternative mode of transport over self-driving in Dublin due to its excellent network of roads, rails, trams, and ferries. Cold winter is a wonderful time to party at the Temple Bar riverside neighborhood.

What is the temperature in December in Dublin?

The average high-temperature, in December, in Dublin, is 9.3°C (48.7°F), while the average low-temperature is 4.5°C (40.1°F).

How many days does it rain in December in Dublin?

In Dublin, in December, during 12 rainfall days, 68.7mm (2.7") of precipitation is typically accumulated.

What is the sea water temperature in December in Dublin?

In December, the average sea temperature in Dublin is 11.3°C (52.3°F). Swimming in 11.3°C (52.3°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the month with the shortest days in Dublin?

December has the shortest days of the year in Dublin, Ireland, with an average of 7.6h of daylight.

How many hours of daylight does Dublin have in December?

The average length of the day in December in Dublin, Ireland, is 7.6h.

What is the month with the least sunshine in Dublin?

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

How long on average sun shines in December in Dublin?

In December, the average sunshine is 1.7h.

When is the lowest UV index in Dublin?

January and December, with an average maximum UV index of 0, are months with the lowest UV index in Dublin.

How high is the UV index in December in Dublin?

The average daily maximum UV index in December is 0. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to the Sun's UV rays.
Average temperature in December - Dublin, Ireland
  • Average high temperature in December: 9.3°C

The warmest month (with the highest average high temperature) is July (20.2°C).
The month with the lowest average high temperature is January (8.8°C).

  • Average low temperature in December: 4.5°C

The month with the highest average low temperature is July (13.5°C).
Coldest months (with the lowest average low temperature) are January and February (3.9°C).

Average rainfall in December - Dublin, Ireland
  • Average rainfall in December: 68.7mm

The wettest month (with the highest rainfall) is October (76mm).
The driest month (with the lowest rainfall) is February (46.1mm).

Average rainfall days in December - Dublin, Ireland
  • Average rainfall days in December: 12 days

Months with the highest number of rainy days are January, October and December (12 days).
Months with the lowest number of rainy days are June and September (9 days).

Average sea temperature in December - Dublin, Ireland
  • Average sea temperature in December: 11.3°C

The best month for swimming (with the highest average sea temperature) is August (14.9°C).
The coldest month (with the lowest average sea temperature) is March (8.4°C).

Average daylight in December / Average sunshine in December - Dublin, Ireland
  • Average daylight in December: 7.6h

The month with the longest days is June (Average daylight: 16.9h).
The month with shortest days is December (Average daylight: 7.6h).

  • Average sunshine in December: 1.7h

The month with most sunshine is May (Average sunshine: 6.3h).
The month with least sunshine is December (Average sunshine: 1.7h).

Average UV index in December - Dublin, Ireland
  • Average UV index in December: 0

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January and December (UV index 0).