Dublin County weather in January

Thinking about venturing to Dublin County this January and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What is the weather like in Dublin County in January?

Dublin County is a region in Ireland. January in Dublin County generally has cold temperatures, with moderate precipitation. The month of January is in the winter season.

You can expect cold maximum daytime temperatures of around 9°C and nighttime temperatures around 4°C in Dublin. On average, January is the coldest month of the year in Dublin County. So be prepared and make sure to pack winter cloths.

In January, precipitation varies across different areas. From moderate rainfall in Dublin with an average of 71 mm to moderate rainfall in Dun Laoghaire with 80 mm. Most cities witness limited sunny days, expect roughly 56 hours of sunlight in Dublin. This low amount of sunlight is perfect for those who lean towards dimmer, cloudier weather rather than intense sunny days.

For a closer look at January's conditions in Dublin County, see the map below. For a more detailed look at Dublin County's yearly weather, check out our Dublin County climate page.

Where to go in Dublin County in January

Weather conditions Weather

Temperatures

Precipitation

Map not visible? Whoops sorry! Please refresh the page.

Legend perfect weather pleasant tolerable unpleasant poor

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

Popular destinations in Dublin County

What is the weather like in January for the 5 most popular destinations in Dublin County?

Average weather in Dublin

In January Dublin generally has low temperatures with maximum daytime temperatures around 9°C, minimum nighttime temperatures around 4°C and moderate monthly rainfall. So on average the conditions are poor that month.

Dublin

Max temperature Max temp

Min temperature Min temp

Monthly sun hours Sun hours

Monthly rainfall Rainfall

Monthly rainy days Rainy days

Weather conditions Weather

<<   December December
<<  

10°C 

4°C 

51 hours 

77 mm 

17 days 

poor 

January January

9°C 

4°C 

56 hours 

71 mm 

18 days 

poor 

February   >> February
>>  

10°C 

4°C 

71 hours 

64 mm 

15 days 

poor 

Climate in Dublin

Average weather in Swords

In January Swords generally has low temperatures with maximum daytime temperatures around 9°C, minimum nighttime temperatures around 4°C and moderate monthly rainfall. So on average the conditions are poor that month.

Swords

Max temperature Max temp

Min temperature Min temp

Monthly sun hours Sun hours

Monthly rainfall Rainfall

Monthly rainy days Rainy days

Weather conditions Weather

<<   December December
<<  

10°C 

5°C 

51 hours 

79 mm 

17 days 

poor 

January January

9°C 

4°C 

56 hours 

72 mm 

18 days 

poor 

February   >> February
>>  

10°C 

4°C 

71 hours 

65 mm 

15 days 

poor 

Climate in Swords

Average weather in Dun Laoghaire

In January Dun Laoghaire generally has low temperatures with maximum daytime temperatures around 9°C, minimum nighttime temperatures around 4°C and moderate monthly rainfall. So on average the conditions are poor that month.

Dun Laoghaire

Max temperature Max temp

Min temperature Min temp

Monthly sun hours Sun hours

Monthly rainfall Rainfall

Monthly rainy days Rainy days

Weather conditions Weather

<<   December December
<<  

10°C 

5°C 

51 hours 

88 mm 

17 days 

poor 

January January

9°C 

4°C 

56 hours 

80 mm 

18 days 

poor 

February   >> February
>>  

9°C 

4°C 

71 hours 

73 mm 

15 days 

poor 

Climate in Dun Laoghaire

Average weather in Rathgar

In January Rathgar generally has low temperatures with maximum daytime temperatures around 9°C, minimum nighttime temperatures around 3°C and moderate monthly rainfall. So on average the conditions are poor that month.

Rathgar

Max temperature Max temp

Min temperature Min temp

Monthly sun hours Sun hours

Monthly rainfall Rainfall

Monthly rainy days Rainy days

Weather conditions Weather

<<   December December
<<  

9°C 

4°C 

51 hours 

80 mm 

17 days 

poor 

January January

9°C 

3°C 

56 hours 

73 mm 

18 days 

poor 

February   >> February
>>  

9°C 

3°C 

71 hours 

68 mm 

15 days 

poor 

Climate in Rathgar

Average weather in Cloghran

In January Cloghran generally has low temperatures with maximum daytime temperatures around 9°C, minimum nighttime temperatures around 4°C and moderate monthly rainfall. So on average the conditions are poor that month.

Cloghran

Max temperature Max temp

Min temperature Min temp

Monthly sun hours Sun hours

Monthly rainfall Rainfall

Monthly rainy days Rainy days

Weather conditions Weather

<<   December December
<<  

10°C 

4°C 

51 hours 

79 mm 

17 days 

poor 

January January

9°C 

4°C 

56 hours 

72 mm 

18 days 

poor 

February   >> February
>>  

10°C 

4°C 

71 hours 

66 mm 

15 days 

poor 

Climate in Cloghran

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

Is January the best time to visit Dublin County?

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

Generally speaking, the best visiting conditions can be found in July and August offering mostly perfect weather in Dublin. On the other hand, the months of January, February and December tend to have poor weather conditions.