Swim in Belfast in march 2025What is the temperature of the sea in in march?
Average sea temperature in Belfast in march 2025.
In march, according to seasonal norms, the sea temperature in Belfast is:
Minimum: 45°F
Average: 47°F
Maximum: 49°F
Other useful seasonal weather averages in march:
- Outside temperature: 40°F to 49°F
- Most common weather: "Cloudy"
- The wind blows at 0.6mph
- It rains a total of 3.9in, over 6 day(s).
Should we swim in Belfast in march?
No... The water temperature in Belfast in march is freezing
You won't be able to swim in Belfast in march! The water temperature is freezing, reaching as low as 45°F (and only 49°F at best)! Our advice: if you are going to Belfast this month, plan to sightsee and forget the beach!
Note also that in march, the climate is very bad with an average outside temperature of 44°F, 3.9in of precipitation (over 6 days) and 90.2 % humidity.
Water and normal seasonal temperatures in Belfast in march
| March | |||
| Average sea temperature | 47°F | ||
| Minimum sea temperature | 45°F | ||
| Maximum sea temperature | 49°F | ||
| Average outside temperature | 45°F | ||
| Maximum outside temperature | 49°F | ||
| Minimum outside temperature | 40°F | ||
| Wind speed | 14.9mph | ||
| Wind temperature | 34°F | ||
| Precipitation | 3.9in | ||
| Number of days of rain | 6 jour(s) (21%) | ||
| Humidity | 91% | ||
| Visibility in kilometers | 8.62km | ||
| Cloud cover | 61% | ||
| Our opinion | freezing swimming |
Swim elsewhere in Northern Ireland in march
| City | Average T° | Min. T° | Max. T° | Our opinion | Derry (Londonderry) in march | 48°F | 50°F | freezing swimming | Portrush in march | 48°F | 49°F | freezing swimming | Portstewart in march | 48°F | 49°F | freezing swimming |