Dublin

Dublin County Weather in December

Average temperatures, rainfall, sunshine and the best places to visit in Dublin County, Ireland in December.

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Dublin Swords Dun Laoghaire Rathgar

Are you planning a trip a to Dublin County, Ireland in December and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in Dublin County in December

Dublin County, Ireland is a region in Ireland. December in Dublin County generally has cold temperatures, with moderate precipitation. During December, winter is in full swing.

Temperatures

You can expect cold maximum daytime temperatures of around 10°C (50°F) and nighttime temperatures around 4°C (39°F) in Dublin.

For a closer look at conditions across Dublin County, Ireland, refer to the map below.

Precipitation

In December, precipitation varies across different areas. From moderate rainfall in Dublin with an average of 77 mm (3 in) to moderate rainfall in Dalkey with 90 mm (3.5 in).

Average sunshine

Sunshine tends to be more scarce in many locations. Dublin gets roughly 51 hours of sunlight. For sunnier alternatives, check our weather planner to find destinations with better conditions.

Explore Dublin County by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Best Places to Visit in Dublin County in December

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Dublin County.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Dublin County

What is the weather like in December for some of the most popular destinations in Dublin County, Ireland?

Temperature range in Dublin County (December)

Precipitation variation in Dublin County (December)

Dublin

In December Dublin generally has low temperatures with maximum daytime temperatures around 10°C (50°F), minimum nighttime temperatures around 4°C (39°F) and moderate monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
12°C (54°F)
10°C (50°F)
9°C (48°F)
Min temperature
6°C (43°F)
4°C (39°F)
4°C (39°F)
Monthly sun hours
71 hours
51 hours
56 hours
Monthly rainfall
87 mm (3.4 in)
77 mm (3 in)
71 mm (2.8 in)
Monthly rainy days
16 days
17 days
18 days
Weather conditions
unpleasant
poor
poor
Climate in Dublin →

Swords

In December Swords generally has low temperatures with maximum daytime temperatures around 10°C (50°F), minimum nighttime temperatures around 5°C (41°F) and moderate monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
12°C (54°F)
10°C (50°F)
9°C (48°F)
Min temperature
6°C (43°F)
5°C (41°F)
4°C (39°F)
Monthly sun hours
71 hours
51 hours
56 hours
Monthly rainfall
89 mm (3.5 in)
79 mm (3.1 in)
72 mm (2.8 in)
Monthly rainy days
16 days
17 days
18 days
Weather conditions
unpleasant
poor
poor
Climate in Swords →

Dun Laoghaire

In December Dun Laoghaire generally has low temperatures with maximum daytime temperatures around 10°C (50°F), minimum nighttime temperatures around 5°C (41°F) and moderate monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
12°C (54°F)
10°C (50°F)
9°C (48°F)
Min temperature
7°C (45°F)
5°C (41°F)
4°C (39°F)
Monthly sun hours
71 hours
51 hours
56 hours
Monthly rainfall
100 mm (3.9 in)
88 mm (3.5 in)
80 mm (3.1 in)
Monthly rainy days
16 days
17 days
18 days
Weather conditions
poor
poor
poor
Climate in Dun Laoghaire →

Rathgar

In December Rathgar generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 4°C (39°F) and moderate monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
11°C (52°F)
9°C (48°F)
9°C (48°F)
Min temperature
6°C (43°F)
4°C (39°F)
3°C (37°F)
Monthly sun hours
71 hours
51 hours
56 hours
Monthly rainfall
89 mm (3.5 in)
80 mm (3.1 in)
73 mm (2.9 in)
Monthly rainy days
16 days
17 days
18 days
Weather conditions
unpleasant
poor
poor
Climate in Rathgar →

Cloghran

In December Cloghran generally has low temperatures with maximum daytime temperatures around 10°C (50°F), minimum nighttime temperatures around 4°C (39°F) and moderate monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
12°C (54°F)
10°C (50°F)
9°C (48°F)
Min temperature
6°C (43°F)
4°C (39°F)
4°C (39°F)
Monthly sun hours
71 hours
51 hours
56 hours
Monthly rainfall
89 mm (3.5 in)
79 mm (3.1 in)
72 mm (2.8 in)
Monthly rainy days
16 days
17 days
18 days
Weather conditions
unpleasant
poor
poor
Climate in Cloghran →

Is your destination not in the list? Have a look at all destinations in Dublin County, in Ireland.

In our records: Ireland December extremes

Notable December records observed across cities in Ireland in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • Based on our data, the coldest December night in Ireland dropped to -16°C (3°F) in Donegal on December 23, 2010.
  • In our records, the coldest December daytime high in Ireland was -7°C (19°F) in Lurgan on December 21, 2010.

Popular cities in December

Day & night temperatures, rainfall and average weather in Dublin County in December.

City Weather Day temp Night temp Rainfall
Dublin 10°C (50°F) 4°C (39°F) 77 mm (3 in)
Swords 10°C (50°F) 5°C (41°F) 79 mm (3.1 in)
Dun Laoghaire 10°C (50°F) 5°C (41°F) 88 mm (3.5 in)
Rathgar 9°C (48°F) 4°C (39°F) 80 mm (3.1 in)
Cloghran 10°C (50°F) 4°C (39°F) 79 mm (3.1 in)
Clondalkin 9°C (48°F) 4°C (39°F) 78 mm (3.1 in)

Dublin County weather in December: frequently asked questions

What is the weather like in Dublin County, Ireland in December?

Expect poor weather across Dublin County, Ireland in December. The popular destination of Dublin averages 10°C (50°F) by day and 4°C (39°F) at night during this winter month.

What is the average temperature in Dublin County, Ireland in December?

In Dublin, the average daytime high in December is 10°C (50°F), while nighttime temperatures drop to around 4°C (39°F).

Does Dublin County, Ireland get a lot of rain in December?

Not particularly. Dublin averages just 77 mm (3 in) of rain in December, making it a mostly dry month for Dublin County, Ireland.

Is December a Good Time to Visit Dublin County, Ireland?

In our view, December might not be the best time to travel to Dublin County, Ireland with often poor weather in Dublin.

On average, the best time to visit Dublin County, Ireland is in July and August with generally perfect weather in Dublin. The weather in January, February and December, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in Dublin County.

Weather and climate has detailed information for every country in the world. Are you going to Ireland? Get detailed historical weather averages for many cities in Ireland.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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