Swim in Belfast in january 2025What is the temperature of the sea in in january?
Average sea temperature in Belfast in january 2025.
In january, according to seasonal norms, the sea temperature in Belfast is:
Minimum: 46°F
Average: 48°F
Maximum: 51°F
Other useful seasonal weather averages in january:
- Outside temperature: 39°F to 45°F
- Most common weather: "Cloudy"
- The wind blows at -0mph
- It rains a total of 4.3in, over 7 day(s).
Should we swim in Belfast in january?
No... The water temperature in Belfast in january is freezing
You won't be able to swim in Belfast in january! The water temperature is freezing, reaching as low as 46°F (and only 51°F at best)! Our advice: if you are going to Belfast this month, plan to sightsee and forget the beach!
Note also that in january, the climate is very bad with an average outside temperature of 42°F, 4.3in of precipitation (over 7 days) and 90.51 % humidity.
Water and normal seasonal temperatures in Belfast in january
| January | |||
| Average sea temperature | 48°F | ||
| Minimum sea temperature | 46°F | ||
| Maximum sea temperature | 51°F | ||
| Average outside temperature | 43°F | ||
| Maximum outside temperature | 45°F | ||
| Minimum outside temperature | 40°F | ||
| Wind speed | 16.2mph | ||
| Wind temperature | 32°F | ||
| Precipitation | 4.3in | ||
| Number of days of rain | 7 jour(s) (24%) | ||
| Humidity | 91% | ||
| Visibility in kilometers | 8.45km | ||
| Cloud cover | 63% | ||
| Our opinion | freezing swimming |
Swim elsewhere in Northern Ireland in january
| City | Average T° | Min. T° | Max. T° | Our opinion | Derry (Londonderry) in january | 50°F | 52°F | freezing swimming | Portrush in january | 49°F | 51°F | freezing swimming | Portstewart in january | 49°F | 51°F | freezing swimming |
Swim in Northern Ireland in january: sea temperature by city