Swim in Portrush in december 2024What is the temperature of the sea in in december?

Average sea temperature in Portrush in december 2024.

In december, according to seasonal norms, the sea temperature in Portrush is:

Minimum: 50°F

Average: 52°F

Maximum: 53°F

Other useful seasonal weather averages in december:

  • Outside temperature: 43°F to 47°F
  • Most common weather: "Cloudy"
  • The wind blows at 1.2mph
  • It rains a total of 4.7in, over 9 day(s).

Should we swim in Portrush in december?

No... The water temperature in Portrush in december is freezing

You won't be able to swim in Portrush in december! The water temperature is freezing, reaching as low as 50°F (and only 53°F at best)! Our advice: if you are going to Portrush this month, plan to sightsee and forget the beach!

Note also that in december, the climate is very bad with an average outside temperature of 45°F, 4.7in of precipitation (over 9 days) and 86.78 % humidity.

Water and normal seasonal temperatures in Portrush in december

December
Average sea temperature 52°F
Minimum sea temperature 50°F
Maximum sea temperature 53°F
Average outside temperature 45°F
Maximum outside temperature 47°F
Minimum outside temperature 43°F
Wind speed 19.9mph
Wind temperature 36°F
Precipitation 4.7in
Number of days of rain 9 jour(s)
(29%)
Humidity 87%
Visibility in kilometers 8.94km
Cloud cover 62%
Our opinion freezing swimming

Swim elsewhere in Northern Ireland in december

City Average T° Max. T° Our opinion
Belfast in december51°F54°Ffreezing swimming
Derry (Londonderry) in december52°F54°Ffreezing swimming
Portstewart in december51°F54°Ffreezing swimming

Swim in Northern Ireland in december: sea temperature by city

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