Swimming in Northern Ireland in december 2024 Sea temperature by city in december

Do you want to go to the beach in Northern Ireland in december 2024? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in december in Northern Ireland by city and our opinion on the chances of enjoying pleasant sea conditions.

Sea temperature in Northern Ireland in december 2024

Here, find the average sea temperature in Northern Ireland in december in several coastal cities.

County Antrim in december

on average:

51°F

min: 49°F / max: 54°F

Ballycastle (Causeway Coast)

on average:

51°F

min: 49°F / max: 53°F

Larne

on average:

51°F

min: 49°F / max: 54°F

Carrickfergus

on average:

52°F

min: 49°F / max: 54°F

Glenariff

on average:

51°F

min: 49°F / max: 53°F

Newtownabbey

on average:

52°F

min: 49°F / max: 54°F

County Londonderry in december

on average:

52°F

min: 50°F / max: 54°F

Castlerock

on average:

51°F

min: 49°F / max: 54°F

Limavady

on average:

51°F

min: 50°F / max: 54°F

on average:

51°F

min: 50°F / max: 54°F

County Down in december

Donwpatrick

on average:

52°F

min: 50°F / max: 55°F

Annalong

on average:

52°F

min: 50°F / max: 55°F

Ballywalter

on average:

51°F

min: 49°F / max: 54°F

Bangor

on average:

52°F

min: 49°F / max: 54°F

Donaghadee

on average:

52°F

min: 49°F / max: 54°F

Dundrum

on average:

52°F

min: 49°F / max: 55°F

Where should you go swimming in Northern Ireland in the month of december?

Swimming in Northern Ireland in december is freezing

In december in Northern Ireland swimming conditions are generally the same everywhere.

Forget about swimming in Belfast, Ballycastle (Causeway Coast), Derry (Londonderry), Donwpatrick, Larne, Annalong, Ballywalter, Bangor, Carrickfergus, Castlerock, Donaghadee, Dundrum, Glenariff, Holywood, Kilkeel, Limavady, Millisle, Newcastle, Newtownabbey, Newtownards, Portrush, Portstewart and Warrenpoint in december! The water temperature is freezing, reaching as low as 49°F (and only 54°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!

Where to go swimming in Northern Ireland in december: the map of sea temperatures

ideal swimming pleasant swimming cool swimming cold swimming freezing swimming

Water temperature and seasonal norms in december

Belfast

December
Average sea temperature 51°F
Minimum sea temperature 49°F
Maximum sea temperature 54°F
Average outside temperature 45°F
Maximum outside temperature 47°F
Minimum outside temperature 41°F
Precipitation 4.3in
Number of days of precipitation 7 jour(s)
(21%)
Cloud cover 59%
Our opinion freezing swimming

More information on swimming in Belfast in december

Ballycastle (Causeway Coast)

December
Average sea temperature 51°F
Minimum sea temperature 49°F
Maximum sea temperature 53°F
Average outside temperature 45°F
Maximum outside temperature 47°F
Minimum outside temperature 43°F
Precipitation 5.6in
Number of days of precipitation 10 jour(s)
(34%)
Cloud cover 62%
Our opinion freezing swimming

Derry (Londonderry)

December
Average sea temperature 52°F
Minimum sea temperature 50°F
Maximum sea temperature 54°F
Average outside temperature 43°F
Maximum outside temperature 45°F
Minimum outside temperature 40°F
Precipitation 2.2in
Number of days of precipitation 3 jour(s)
(9%)
Cloud cover 66%
Our opinion freezing swimming

More information on swimming in Derry (Londonderry) in december

Donwpatrick

December
Average sea temperature 52°F
Minimum sea temperature 50°F
Maximum sea temperature 55°F
Average outside temperature 47°F
Maximum outside temperature 49°F
Minimum outside temperature 45°F
Precipitation 3.1in
Number of days of precipitation 5 jour(s)
(17%)
Cloud cover 56%
Our opinion freezing swimming

Larne

December
Average sea temperature 51°F
Minimum sea temperature 49°F
Maximum sea temperature 54°F
Average outside temperature 45°F
Maximum outside temperature 49°F
Minimum outside temperature 43°F
Precipitation 4.5in
Number of days of precipitation 8 jour(s)
(26%)
Cloud cover 59%
Our opinion freezing swimming

List of coastal cities in Northern Ireland

Belfast in decemberfreezing swimming
Ballycastle (Causeway Coast) in decemberfreezing swimming
Derry (Londonderry) in decemberfreezing swimming
Donwpatrick in decemberfreezing swimming
Larne in decemberfreezing swimming
Annalong in decemberfreezing swimming
Ballywalter in decemberfreezing swimming
Bangor in decemberfreezing swimming
Carrickfergus in decemberfreezing swimming
Castlerock in decemberfreezing swimming
Donaghadee in decemberfreezing swimming
Dundrum in decemberfreezing swimming
Glenariff in decemberfreezing swimming
Holywood in decemberfreezing swimming
Kilkeel in decemberfreezing swimming
Limavady in decemberfreezing swimming
Millisle in decemberfreezing swimming
Newcastle in decemberfreezing swimming
Newtownabbey in decemberfreezing swimming
Newtownards in decemberfreezing swimming
Portrush in decemberfreezing swimming
Portstewart in decemberfreezing swimming
Warrenpoint in decemberfreezing swimming
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